pulse electric field
TRANSCRIPT
PULSED ELECTRIC FIELD
By Hanarsquoa MaheliAdvisor Dr Taha Rababah
PULSED ELECTRIC FIELD Pulse- A pulse is a single disturbance that moves
through a medium from one point to the next point
A disturbance is in some identifiable mediumEnergy is transmitted from place to place but
the medium does not travel between two places
What is pulsed electric field Pulsed electric field (PEF) used short electric
pulses to preserve the food
Pulsed electric field (PEF) treatment is an innovative and promising method for non-thermal processing of foodstuff
It is suitable for preserving liquid and semi-liquid foods removing micro-organisms and producing functional constituents Examples- milk fruit juices soup egg etc
Fundamentals of PEF
PEF Generation of very high intensity electric pulses (up to 15kV) for a very short duration of time (μs)to inactivate microorganisms
Input requirements of PEF
Microbial
inactivation
15-40kVcm
Improvement of mass
transfer in
plantanimal cell
07-30kVcm
In apple juice
22-34kVcm
Sludge disintegrati
on10-20kvcm
About of PEF It is one of the most appealing technology due
to --short treatment time(typically below 1 second)-reduced heating effect-energy lost during heating food is minimized-for fresh-like characteristics of food along with high sensorial quality and nutrient content
How does this technology benefit consumers
1048698PEF processing offers high quality fresh-like liquid foods with excellent flavor nutritional value and shelf-life
1048698Since it preserves foods without using heat foods treated this way retain their fresh aroma taste and appearance
Components of PEFndash Pulse generator1048698High voltage power supply 1048698HV transformer 1048698Capacitor (storing energy)1048698Switching devicesndash Fluid handling system1048698Pumping mechanism (batch or continuous)1048698Treatment chambersndash Cooling mechanism ndash Oscilloscope (to measure the changing of voltage with
time) ndash Computer
How does PEF work to inactivate microorganism
PEF technology is based on a pulsing power delivered to the product placed between electrodes by high voltage pulses in the order of 20ndash80 kV (usually for a couple of microseconds)
The equipment consists of a high voltage pulse generator and a treatment chamber with a suitable fluid handling system and necessary monitoring and controlling devices
Food product is placed in the treatment chamber either in a static or continuous design where two electrodes are connected together with a nonconductive material to avoid electrical flow from one to the other
Generated high voltage electrical pulses are applied to the electrodes which then conduct the high intensity electrical pulse to the product placed between the two electrodes
The food product experiences a force per unit charge the so-called electric field which is responsible for the irreversible cell membrane breakdown in microorganisms
This leads to dielectric breakdown of the microbial cell membranes and to interaction with the charged molecules of food
Hence PEF technology has been suggested for the pasteurization of foods such as juices milk yogurt soups and liquid eggs
How are PEF processed foods stored
1048698PEF pasteurized products currently are stored refrigerated
1048698In some cases (for example milk) this is necessary for safety (to prevent the growth of spores in low-acid foods)
1048698For acid foods refrigeration is not necessary for microbial stability but is used to preserve flavor quality for extended periods of time
The economics of PEF processing
1048698PEF is an energy efficient process compared to thermal pasteurization 1048698The PEF processing would add only $003ndash$007L to final food costs
1048698A commercial-scale PEF system can process between 1000 and 5000 liters of liquid foods per hour and this equipment is scalable
To Obtain Safe and Healthy Shelf-Stable Liquid Foods
The shelf-life of a PEF processed product
In general the shelf-life of PEF-treated and thermally pasteurized foods is comparablePEF pasteurization kills microorganisms and inactivates some enzymes and unless the product is acidic it requires refrigerated storage
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
PULSED ELECTRIC FIELD Pulse- A pulse is a single disturbance that moves
through a medium from one point to the next point
A disturbance is in some identifiable mediumEnergy is transmitted from place to place but
the medium does not travel between two places
What is pulsed electric field Pulsed electric field (PEF) used short electric
pulses to preserve the food
Pulsed electric field (PEF) treatment is an innovative and promising method for non-thermal processing of foodstuff
It is suitable for preserving liquid and semi-liquid foods removing micro-organisms and producing functional constituents Examples- milk fruit juices soup egg etc
Fundamentals of PEF
PEF Generation of very high intensity electric pulses (up to 15kV) for a very short duration of time (μs)to inactivate microorganisms
Input requirements of PEF
Microbial
inactivation
15-40kVcm
Improvement of mass
transfer in
plantanimal cell
07-30kVcm
In apple juice
22-34kVcm
Sludge disintegrati
on10-20kvcm
About of PEF It is one of the most appealing technology due
to --short treatment time(typically below 1 second)-reduced heating effect-energy lost during heating food is minimized-for fresh-like characteristics of food along with high sensorial quality and nutrient content
How does this technology benefit consumers
1048698PEF processing offers high quality fresh-like liquid foods with excellent flavor nutritional value and shelf-life
1048698Since it preserves foods without using heat foods treated this way retain their fresh aroma taste and appearance
Components of PEFndash Pulse generator1048698High voltage power supply 1048698HV transformer 1048698Capacitor (storing energy)1048698Switching devicesndash Fluid handling system1048698Pumping mechanism (batch or continuous)1048698Treatment chambersndash Cooling mechanism ndash Oscilloscope (to measure the changing of voltage with
time) ndash Computer
How does PEF work to inactivate microorganism
PEF technology is based on a pulsing power delivered to the product placed between electrodes by high voltage pulses in the order of 20ndash80 kV (usually for a couple of microseconds)
The equipment consists of a high voltage pulse generator and a treatment chamber with a suitable fluid handling system and necessary monitoring and controlling devices
Food product is placed in the treatment chamber either in a static or continuous design where two electrodes are connected together with a nonconductive material to avoid electrical flow from one to the other
Generated high voltage electrical pulses are applied to the electrodes which then conduct the high intensity electrical pulse to the product placed between the two electrodes
The food product experiences a force per unit charge the so-called electric field which is responsible for the irreversible cell membrane breakdown in microorganisms
This leads to dielectric breakdown of the microbial cell membranes and to interaction with the charged molecules of food
Hence PEF technology has been suggested for the pasteurization of foods such as juices milk yogurt soups and liquid eggs
How are PEF processed foods stored
1048698PEF pasteurized products currently are stored refrigerated
1048698In some cases (for example milk) this is necessary for safety (to prevent the growth of spores in low-acid foods)
1048698For acid foods refrigeration is not necessary for microbial stability but is used to preserve flavor quality for extended periods of time
The economics of PEF processing
1048698PEF is an energy efficient process compared to thermal pasteurization 1048698The PEF processing would add only $003ndash$007L to final food costs
1048698A commercial-scale PEF system can process between 1000 and 5000 liters of liquid foods per hour and this equipment is scalable
To Obtain Safe and Healthy Shelf-Stable Liquid Foods
The shelf-life of a PEF processed product
In general the shelf-life of PEF-treated and thermally pasteurized foods is comparablePEF pasteurization kills microorganisms and inactivates some enzymes and unless the product is acidic it requires refrigerated storage
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
What is pulsed electric field Pulsed electric field (PEF) used short electric
pulses to preserve the food
Pulsed electric field (PEF) treatment is an innovative and promising method for non-thermal processing of foodstuff
It is suitable for preserving liquid and semi-liquid foods removing micro-organisms and producing functional constituents Examples- milk fruit juices soup egg etc
Fundamentals of PEF
PEF Generation of very high intensity electric pulses (up to 15kV) for a very short duration of time (μs)to inactivate microorganisms
Input requirements of PEF
Microbial
inactivation
15-40kVcm
Improvement of mass
transfer in
plantanimal cell
07-30kVcm
In apple juice
22-34kVcm
Sludge disintegrati
on10-20kvcm
About of PEF It is one of the most appealing technology due
to --short treatment time(typically below 1 second)-reduced heating effect-energy lost during heating food is minimized-for fresh-like characteristics of food along with high sensorial quality and nutrient content
How does this technology benefit consumers
1048698PEF processing offers high quality fresh-like liquid foods with excellent flavor nutritional value and shelf-life
1048698Since it preserves foods without using heat foods treated this way retain their fresh aroma taste and appearance
Components of PEFndash Pulse generator1048698High voltage power supply 1048698HV transformer 1048698Capacitor (storing energy)1048698Switching devicesndash Fluid handling system1048698Pumping mechanism (batch or continuous)1048698Treatment chambersndash Cooling mechanism ndash Oscilloscope (to measure the changing of voltage with
time) ndash Computer
How does PEF work to inactivate microorganism
PEF technology is based on a pulsing power delivered to the product placed between electrodes by high voltage pulses in the order of 20ndash80 kV (usually for a couple of microseconds)
The equipment consists of a high voltage pulse generator and a treatment chamber with a suitable fluid handling system and necessary monitoring and controlling devices
Food product is placed in the treatment chamber either in a static or continuous design where two electrodes are connected together with a nonconductive material to avoid electrical flow from one to the other
Generated high voltage electrical pulses are applied to the electrodes which then conduct the high intensity electrical pulse to the product placed between the two electrodes
The food product experiences a force per unit charge the so-called electric field which is responsible for the irreversible cell membrane breakdown in microorganisms
This leads to dielectric breakdown of the microbial cell membranes and to interaction with the charged molecules of food
Hence PEF technology has been suggested for the pasteurization of foods such as juices milk yogurt soups and liquid eggs
How are PEF processed foods stored
1048698PEF pasteurized products currently are stored refrigerated
1048698In some cases (for example milk) this is necessary for safety (to prevent the growth of spores in low-acid foods)
1048698For acid foods refrigeration is not necessary for microbial stability but is used to preserve flavor quality for extended periods of time
The economics of PEF processing
1048698PEF is an energy efficient process compared to thermal pasteurization 1048698The PEF processing would add only $003ndash$007L to final food costs
1048698A commercial-scale PEF system can process between 1000 and 5000 liters of liquid foods per hour and this equipment is scalable
To Obtain Safe and Healthy Shelf-Stable Liquid Foods
The shelf-life of a PEF processed product
In general the shelf-life of PEF-treated and thermally pasteurized foods is comparablePEF pasteurization kills microorganisms and inactivates some enzymes and unless the product is acidic it requires refrigerated storage
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
Fundamentals of PEF
PEF Generation of very high intensity electric pulses (up to 15kV) for a very short duration of time (μs)to inactivate microorganisms
Input requirements of PEF
Microbial
inactivation
15-40kVcm
Improvement of mass
transfer in
plantanimal cell
07-30kVcm
In apple juice
22-34kVcm
Sludge disintegrati
on10-20kvcm
About of PEF It is one of the most appealing technology due
to --short treatment time(typically below 1 second)-reduced heating effect-energy lost during heating food is minimized-for fresh-like characteristics of food along with high sensorial quality and nutrient content
How does this technology benefit consumers
1048698PEF processing offers high quality fresh-like liquid foods with excellent flavor nutritional value and shelf-life
1048698Since it preserves foods without using heat foods treated this way retain their fresh aroma taste and appearance
Components of PEFndash Pulse generator1048698High voltage power supply 1048698HV transformer 1048698Capacitor (storing energy)1048698Switching devicesndash Fluid handling system1048698Pumping mechanism (batch or continuous)1048698Treatment chambersndash Cooling mechanism ndash Oscilloscope (to measure the changing of voltage with
time) ndash Computer
How does PEF work to inactivate microorganism
PEF technology is based on a pulsing power delivered to the product placed between electrodes by high voltage pulses in the order of 20ndash80 kV (usually for a couple of microseconds)
The equipment consists of a high voltage pulse generator and a treatment chamber with a suitable fluid handling system and necessary monitoring and controlling devices
Food product is placed in the treatment chamber either in a static or continuous design where two electrodes are connected together with a nonconductive material to avoid electrical flow from one to the other
Generated high voltage electrical pulses are applied to the electrodes which then conduct the high intensity electrical pulse to the product placed between the two electrodes
The food product experiences a force per unit charge the so-called electric field which is responsible for the irreversible cell membrane breakdown in microorganisms
This leads to dielectric breakdown of the microbial cell membranes and to interaction with the charged molecules of food
Hence PEF technology has been suggested for the pasteurization of foods such as juices milk yogurt soups and liquid eggs
How are PEF processed foods stored
1048698PEF pasteurized products currently are stored refrigerated
1048698In some cases (for example milk) this is necessary for safety (to prevent the growth of spores in low-acid foods)
1048698For acid foods refrigeration is not necessary for microbial stability but is used to preserve flavor quality for extended periods of time
The economics of PEF processing
1048698PEF is an energy efficient process compared to thermal pasteurization 1048698The PEF processing would add only $003ndash$007L to final food costs
1048698A commercial-scale PEF system can process between 1000 and 5000 liters of liquid foods per hour and this equipment is scalable
To Obtain Safe and Healthy Shelf-Stable Liquid Foods
The shelf-life of a PEF processed product
In general the shelf-life of PEF-treated and thermally pasteurized foods is comparablePEF pasteurization kills microorganisms and inactivates some enzymes and unless the product is acidic it requires refrigerated storage
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
Input requirements of PEF
Microbial
inactivation
15-40kVcm
Improvement of mass
transfer in
plantanimal cell
07-30kVcm
In apple juice
22-34kVcm
Sludge disintegrati
on10-20kvcm
About of PEF It is one of the most appealing technology due
to --short treatment time(typically below 1 second)-reduced heating effect-energy lost during heating food is minimized-for fresh-like characteristics of food along with high sensorial quality and nutrient content
How does this technology benefit consumers
1048698PEF processing offers high quality fresh-like liquid foods with excellent flavor nutritional value and shelf-life
1048698Since it preserves foods without using heat foods treated this way retain their fresh aroma taste and appearance
Components of PEFndash Pulse generator1048698High voltage power supply 1048698HV transformer 1048698Capacitor (storing energy)1048698Switching devicesndash Fluid handling system1048698Pumping mechanism (batch or continuous)1048698Treatment chambersndash Cooling mechanism ndash Oscilloscope (to measure the changing of voltage with
time) ndash Computer
How does PEF work to inactivate microorganism
PEF technology is based on a pulsing power delivered to the product placed between electrodes by high voltage pulses in the order of 20ndash80 kV (usually for a couple of microseconds)
The equipment consists of a high voltage pulse generator and a treatment chamber with a suitable fluid handling system and necessary monitoring and controlling devices
Food product is placed in the treatment chamber either in a static or continuous design where two electrodes are connected together with a nonconductive material to avoid electrical flow from one to the other
Generated high voltage electrical pulses are applied to the electrodes which then conduct the high intensity electrical pulse to the product placed between the two electrodes
The food product experiences a force per unit charge the so-called electric field which is responsible for the irreversible cell membrane breakdown in microorganisms
This leads to dielectric breakdown of the microbial cell membranes and to interaction with the charged molecules of food
Hence PEF technology has been suggested for the pasteurization of foods such as juices milk yogurt soups and liquid eggs
How are PEF processed foods stored
1048698PEF pasteurized products currently are stored refrigerated
1048698In some cases (for example milk) this is necessary for safety (to prevent the growth of spores in low-acid foods)
1048698For acid foods refrigeration is not necessary for microbial stability but is used to preserve flavor quality for extended periods of time
The economics of PEF processing
1048698PEF is an energy efficient process compared to thermal pasteurization 1048698The PEF processing would add only $003ndash$007L to final food costs
1048698A commercial-scale PEF system can process between 1000 and 5000 liters of liquid foods per hour and this equipment is scalable
To Obtain Safe and Healthy Shelf-Stable Liquid Foods
The shelf-life of a PEF processed product
In general the shelf-life of PEF-treated and thermally pasteurized foods is comparablePEF pasteurization kills microorganisms and inactivates some enzymes and unless the product is acidic it requires refrigerated storage
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
About of PEF It is one of the most appealing technology due
to --short treatment time(typically below 1 second)-reduced heating effect-energy lost during heating food is minimized-for fresh-like characteristics of food along with high sensorial quality and nutrient content
How does this technology benefit consumers
1048698PEF processing offers high quality fresh-like liquid foods with excellent flavor nutritional value and shelf-life
1048698Since it preserves foods without using heat foods treated this way retain their fresh aroma taste and appearance
Components of PEFndash Pulse generator1048698High voltage power supply 1048698HV transformer 1048698Capacitor (storing energy)1048698Switching devicesndash Fluid handling system1048698Pumping mechanism (batch or continuous)1048698Treatment chambersndash Cooling mechanism ndash Oscilloscope (to measure the changing of voltage with
time) ndash Computer
How does PEF work to inactivate microorganism
PEF technology is based on a pulsing power delivered to the product placed between electrodes by high voltage pulses in the order of 20ndash80 kV (usually for a couple of microseconds)
The equipment consists of a high voltage pulse generator and a treatment chamber with a suitable fluid handling system and necessary monitoring and controlling devices
Food product is placed in the treatment chamber either in a static or continuous design where two electrodes are connected together with a nonconductive material to avoid electrical flow from one to the other
Generated high voltage electrical pulses are applied to the electrodes which then conduct the high intensity electrical pulse to the product placed between the two electrodes
The food product experiences a force per unit charge the so-called electric field which is responsible for the irreversible cell membrane breakdown in microorganisms
This leads to dielectric breakdown of the microbial cell membranes and to interaction with the charged molecules of food
Hence PEF technology has been suggested for the pasteurization of foods such as juices milk yogurt soups and liquid eggs
How are PEF processed foods stored
1048698PEF pasteurized products currently are stored refrigerated
1048698In some cases (for example milk) this is necessary for safety (to prevent the growth of spores in low-acid foods)
1048698For acid foods refrigeration is not necessary for microbial stability but is used to preserve flavor quality for extended periods of time
The economics of PEF processing
1048698PEF is an energy efficient process compared to thermal pasteurization 1048698The PEF processing would add only $003ndash$007L to final food costs
1048698A commercial-scale PEF system can process between 1000 and 5000 liters of liquid foods per hour and this equipment is scalable
To Obtain Safe and Healthy Shelf-Stable Liquid Foods
The shelf-life of a PEF processed product
In general the shelf-life of PEF-treated and thermally pasteurized foods is comparablePEF pasteurization kills microorganisms and inactivates some enzymes and unless the product is acidic it requires refrigerated storage
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
How does this technology benefit consumers
1048698PEF processing offers high quality fresh-like liquid foods with excellent flavor nutritional value and shelf-life
1048698Since it preserves foods without using heat foods treated this way retain their fresh aroma taste and appearance
Components of PEFndash Pulse generator1048698High voltage power supply 1048698HV transformer 1048698Capacitor (storing energy)1048698Switching devicesndash Fluid handling system1048698Pumping mechanism (batch or continuous)1048698Treatment chambersndash Cooling mechanism ndash Oscilloscope (to measure the changing of voltage with
time) ndash Computer
How does PEF work to inactivate microorganism
PEF technology is based on a pulsing power delivered to the product placed between electrodes by high voltage pulses in the order of 20ndash80 kV (usually for a couple of microseconds)
The equipment consists of a high voltage pulse generator and a treatment chamber with a suitable fluid handling system and necessary monitoring and controlling devices
Food product is placed in the treatment chamber either in a static or continuous design where two electrodes are connected together with a nonconductive material to avoid electrical flow from one to the other
Generated high voltage electrical pulses are applied to the electrodes which then conduct the high intensity electrical pulse to the product placed between the two electrodes
The food product experiences a force per unit charge the so-called electric field which is responsible for the irreversible cell membrane breakdown in microorganisms
This leads to dielectric breakdown of the microbial cell membranes and to interaction with the charged molecules of food
Hence PEF technology has been suggested for the pasteurization of foods such as juices milk yogurt soups and liquid eggs
How are PEF processed foods stored
1048698PEF pasteurized products currently are stored refrigerated
1048698In some cases (for example milk) this is necessary for safety (to prevent the growth of spores in low-acid foods)
1048698For acid foods refrigeration is not necessary for microbial stability but is used to preserve flavor quality for extended periods of time
The economics of PEF processing
1048698PEF is an energy efficient process compared to thermal pasteurization 1048698The PEF processing would add only $003ndash$007L to final food costs
1048698A commercial-scale PEF system can process between 1000 and 5000 liters of liquid foods per hour and this equipment is scalable
To Obtain Safe and Healthy Shelf-Stable Liquid Foods
The shelf-life of a PEF processed product
In general the shelf-life of PEF-treated and thermally pasteurized foods is comparablePEF pasteurization kills microorganisms and inactivates some enzymes and unless the product is acidic it requires refrigerated storage
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
Components of PEFndash Pulse generator1048698High voltage power supply 1048698HV transformer 1048698Capacitor (storing energy)1048698Switching devicesndash Fluid handling system1048698Pumping mechanism (batch or continuous)1048698Treatment chambersndash Cooling mechanism ndash Oscilloscope (to measure the changing of voltage with
time) ndash Computer
How does PEF work to inactivate microorganism
PEF technology is based on a pulsing power delivered to the product placed between electrodes by high voltage pulses in the order of 20ndash80 kV (usually for a couple of microseconds)
The equipment consists of a high voltage pulse generator and a treatment chamber with a suitable fluid handling system and necessary monitoring and controlling devices
Food product is placed in the treatment chamber either in a static or continuous design where two electrodes are connected together with a nonconductive material to avoid electrical flow from one to the other
Generated high voltage electrical pulses are applied to the electrodes which then conduct the high intensity electrical pulse to the product placed between the two electrodes
The food product experiences a force per unit charge the so-called electric field which is responsible for the irreversible cell membrane breakdown in microorganisms
This leads to dielectric breakdown of the microbial cell membranes and to interaction with the charged molecules of food
Hence PEF technology has been suggested for the pasteurization of foods such as juices milk yogurt soups and liquid eggs
How are PEF processed foods stored
1048698PEF pasteurized products currently are stored refrigerated
1048698In some cases (for example milk) this is necessary for safety (to prevent the growth of spores in low-acid foods)
1048698For acid foods refrigeration is not necessary for microbial stability but is used to preserve flavor quality for extended periods of time
The economics of PEF processing
1048698PEF is an energy efficient process compared to thermal pasteurization 1048698The PEF processing would add only $003ndash$007L to final food costs
1048698A commercial-scale PEF system can process between 1000 and 5000 liters of liquid foods per hour and this equipment is scalable
To Obtain Safe and Healthy Shelf-Stable Liquid Foods
The shelf-life of a PEF processed product
In general the shelf-life of PEF-treated and thermally pasteurized foods is comparablePEF pasteurization kills microorganisms and inactivates some enzymes and unless the product is acidic it requires refrigerated storage
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
How does PEF work to inactivate microorganism
PEF technology is based on a pulsing power delivered to the product placed between electrodes by high voltage pulses in the order of 20ndash80 kV (usually for a couple of microseconds)
The equipment consists of a high voltage pulse generator and a treatment chamber with a suitable fluid handling system and necessary monitoring and controlling devices
Food product is placed in the treatment chamber either in a static or continuous design where two electrodes are connected together with a nonconductive material to avoid electrical flow from one to the other
Generated high voltage electrical pulses are applied to the electrodes which then conduct the high intensity electrical pulse to the product placed between the two electrodes
The food product experiences a force per unit charge the so-called electric field which is responsible for the irreversible cell membrane breakdown in microorganisms
This leads to dielectric breakdown of the microbial cell membranes and to interaction with the charged molecules of food
Hence PEF technology has been suggested for the pasteurization of foods such as juices milk yogurt soups and liquid eggs
How are PEF processed foods stored
1048698PEF pasteurized products currently are stored refrigerated
1048698In some cases (for example milk) this is necessary for safety (to prevent the growth of spores in low-acid foods)
1048698For acid foods refrigeration is not necessary for microbial stability but is used to preserve flavor quality for extended periods of time
The economics of PEF processing
1048698PEF is an energy efficient process compared to thermal pasteurization 1048698The PEF processing would add only $003ndash$007L to final food costs
1048698A commercial-scale PEF system can process between 1000 and 5000 liters of liquid foods per hour and this equipment is scalable
To Obtain Safe and Healthy Shelf-Stable Liquid Foods
The shelf-life of a PEF processed product
In general the shelf-life of PEF-treated and thermally pasteurized foods is comparablePEF pasteurization kills microorganisms and inactivates some enzymes and unless the product is acidic it requires refrigerated storage
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
This leads to dielectric breakdown of the microbial cell membranes and to interaction with the charged molecules of food
Hence PEF technology has been suggested for the pasteurization of foods such as juices milk yogurt soups and liquid eggs
How are PEF processed foods stored
1048698PEF pasteurized products currently are stored refrigerated
1048698In some cases (for example milk) this is necessary for safety (to prevent the growth of spores in low-acid foods)
1048698For acid foods refrigeration is not necessary for microbial stability but is used to preserve flavor quality for extended periods of time
The economics of PEF processing
1048698PEF is an energy efficient process compared to thermal pasteurization 1048698The PEF processing would add only $003ndash$007L to final food costs
1048698A commercial-scale PEF system can process between 1000 and 5000 liters of liquid foods per hour and this equipment is scalable
To Obtain Safe and Healthy Shelf-Stable Liquid Foods
The shelf-life of a PEF processed product
In general the shelf-life of PEF-treated and thermally pasteurized foods is comparablePEF pasteurization kills microorganisms and inactivates some enzymes and unless the product is acidic it requires refrigerated storage
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
How are PEF processed foods stored
1048698PEF pasteurized products currently are stored refrigerated
1048698In some cases (for example milk) this is necessary for safety (to prevent the growth of spores in low-acid foods)
1048698For acid foods refrigeration is not necessary for microbial stability but is used to preserve flavor quality for extended periods of time
The economics of PEF processing
1048698PEF is an energy efficient process compared to thermal pasteurization 1048698The PEF processing would add only $003ndash$007L to final food costs
1048698A commercial-scale PEF system can process between 1000 and 5000 liters of liquid foods per hour and this equipment is scalable
To Obtain Safe and Healthy Shelf-Stable Liquid Foods
The shelf-life of a PEF processed product
In general the shelf-life of PEF-treated and thermally pasteurized foods is comparablePEF pasteurization kills microorganisms and inactivates some enzymes and unless the product is acidic it requires refrigerated storage
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
The economics of PEF processing
1048698PEF is an energy efficient process compared to thermal pasteurization 1048698The PEF processing would add only $003ndash$007L to final food costs
1048698A commercial-scale PEF system can process between 1000 and 5000 liters of liquid foods per hour and this equipment is scalable
To Obtain Safe and Healthy Shelf-Stable Liquid Foods
The shelf-life of a PEF processed product
In general the shelf-life of PEF-treated and thermally pasteurized foods is comparablePEF pasteurization kills microorganisms and inactivates some enzymes and unless the product is acidic it requires refrigerated storage
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
To Obtain Safe and Healthy Shelf-Stable Liquid Foods
The shelf-life of a PEF processed product
In general the shelf-life of PEF-treated and thermally pasteurized foods is comparablePEF pasteurization kills microorganisms and inactivates some enzymes and unless the product is acidic it requires refrigerated storage
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
1048698For heat-sensitive liquid foods where thermal pasteurization is not an option (due to flavor texture or color changes) PEF treatment would be advantageous
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
The integration of continuous PEF Processing System
1048698An integrated PEF system consists of a fluid handling unit high voltage pulse generator PEF treatment chambers and packaging machine
1048698The fluid handling unit delivers stable uniform flow with sterilize-in-place (SIP) and clean-in-place (CIP) functions
1048698The pulse generator supplies high voltage pulses into foods flowing through PEF treatment chambers
1048698Treated foods are packaged continuously
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
What is a PEF treatment chamber
1048698A PEF treatment chamber consists of at least two electrodes and insulation that forms a volume ie PEF treatment zone where the foods receive pulses
1048698The electrodes are made of inert materials such as titanium
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
Continuous PEF system
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
PEF system with multiple treatment chambers
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
Is commercial scale equipment available
1048698In the United States the first commercial scale continuous PEF system is installed at The Ohio State Universityrsquos Department of Food Science and Technology
1048698This PEF system processes volumes ranging from 500 to 2000 liters per hour
Is PEF equipment safe for the environment
1048698Yes this process uses ordinary electricity The facility meets electrical safety standards and no harmful environmental by-products are produced
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
Limitations -
1048698No effect on enzymes and spores1048698Difficult to use with conductive materials1048698Only suitable for liquids or particles in liquids1048698Only effective in combination with heat1048698Products of electrolysis may adversely affect
foods1048698Safety concerns in local processing
environment1048698Energy efficiency not yet certain1048698May be problems with scaling-up process
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
Engineering Principles
C0=τR=τσAd
τ=pulse duration (s) R=resistance (Ω) σ=conductivity (Sm) d= gap between electrodes (m) A=area of electrode (m2)
Q=05 C0 V2
Q=energy stored in capacitor (Jm3) C0= Capacitance (F) V= charging voltage
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-
Thank You
- PULSED ELECTRIC FIELD
- PULSED ELECTRIC FIELD
- What is pulsed electric field
- Slide 4
- Slide 5
- About of PEF
- Slide 7
- Components of PEF
- Slide 9
- Slide 10
- Slide 11
- Slide 12
- How does PEF work to inactivate microorganism
- Slide 14
- Slide 15
- Slide 16
- To Obtain Safe and Healthy Shelf-Stable Liquid Foods
- Slide 18
- Slide 19
- Slide 20
- Continuous PEF system
- PEF system with multiple treatment chambers
- Slide 23
- Slide 24
- Slide 25
- Slide 26
-