elea pef pulsed electric field industrial applications
TRANSCRIPT
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Industrial Applications of PEF processing
Stefan Toepfl
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We are the world’s leading provider of
Pulsed Electric Field Systems (PEF) to
the food, beverage
& scientific sectors.
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Pulsed Electric Field ProcessingTexture softening
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Structural modification
Pulsed Electric FieldsImpact on structure
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Smoother cut and softer product
New amazing shapes are great with Elea PEF.
Treated sweet potato
Pulsed Electric FieldsCutting improvement – new shapes
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Pulsed Electric FieldsImpact on structure
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With PEF we can generate and accurately measure significant increases in yield,
energy and water savings and improve quality
THE BENEFITS OF PEF FOR FRENCH FRIES
LESS HEAT
LOW ENERGY USE REDUCED BLANCHING TIME LESS BROWNING
LESS OIL UPTAKELESS FRACTURE
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Pulsed Electric FieldsSustainability
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Enhanced drying with PEFSweet potato and onion drying: reducing drying time and enhancing colour
Untreated PEF
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Enhanced freeze drying with PEF
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Pulsed Electric Field ProcessingJuice extraction
Vaculiq low oxygen vacuum filter technology and Elea PEFYield increase and premium quality
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0 2 4 6 8 10 12 14 16 18 20 22100
101
102
103
104
105
106
Mic
robi
al c
ount
(cf
u/m
l)
Storage time (days)
untreated: total aerobic count untreated: yeats and molds untreated: Lactic acid bacterie treated: total aerobic count treated: yeasts and molds treated: Lactic acid bacteria
detection limit
Shelf life increase of fresh, non-pasteurized smoothies and other heat sensitive liquids
Pulsed Electric Field ProcessingJuice Preservation
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Pulsed Electric Field ProcessingJuice preservation
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Tube-in-tube heat exchanger. 1800 L/h. Heat recovery section included.
Pulsed Electric FieldsLine setup
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Aseptic tankUNTREATED PRODUCT
Aseptic tankFINAL PRODUCT
PEF unit
TT
T Temperature control
Juice flow
Juice flow
35°C
4°C
55°C
4°C
4°C
*Temperatures shown here are illustrative
To filling line
Conditioning section
Cooling section
The heat recovery section uses the warm product to temper the cold product. Therefore less energy is required to condition the untreated juice and refrigerate the PEF juice.
Heat recovery section
20°C
20°C
Pulsed Electric FieldsLine setup
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The electrical energy delivered to the product is partially transformed into thermal energy. This is a side effect which is less relevant than the electroporation produced during the treatment. The treatment time is in the range of microseconds. Although the temperature peak can reach more than 60°C in high intensity treatments, the thermal load compared to a traditional thermal pasteurisation is much lower.
Temperature/time profile
LTLT pasteurisation
PEF pasteurisation
Thermal energy load Pasteurization units
HTST pasteurisation
HPP
Thermal
HTSTPEF
HPP
Pulsed Electric FieldsLine setup
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Pulsed Electric Field ProcessingBusiness impact
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Pulsed Electric Field ProcessingJuice preservation
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Pulsed Electric Field ProcessingBusiness impact
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Pulsed Electric Field ProcessingBusiness impact
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Pulsed Electric Field ProcessingBusiness impact
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Electrical energy is stored in a capacitor and discharged into the treatment chamber
Dependent on switching technology and discharge circuit different pulse wave shapes can be obtained
Differences in peak power capabilities
RC-series PFN
Transformer Solid state Marx generator
Pulsed Electric Field ProcessingEquipment design
spark gap
capacitor
solid stateswitch
treatmentchamber
25 kV 25 kV
5 kV 5 kV 5 kV 5 kV
2.5 kV 25 kV
a
c d
b
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We provide 3 customisable PEF systems
OUR MACHINES
CoolJuice™ process pumpable liquid and semi-liquid products
– juices, syrups, mash and pumpable non-foods.
SmoothCut™ systems process solid products such as roots, leaves, fruits and
vegetables.
Our trial batch system can treat solids and liquids for scientific and pilot scale
applications.
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Quelle Fotos: DIL,
• PEF Pilot™• Batch system for use as
trial system• Tech Center / Lab• CE or UL/Ulc compliant• 10 l chamber volume• up to 300 kg/hr
Pulsed Electric FieldsEquipment
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Pulsed Electric FieldsEquipment
SmoothCut™ 1Solids system• Capacity up to 6.000 kg/h• Belt width 320 mm• Systems for sinking and floating
products available
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Pulsed Electric FieldsEquipment
SmoothCut™ 10Solids system• Capacity up to 13.000 kg/h• Belt width 320 mm• Systems for sinking and floating
products available
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Pulsed Electric FieldsEquipment
SmoothCut™ 100cSolids system• Capacity up to 25.000 kg/h• Belt width 600 mm• Systems for sinking and floating
products available
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Pulsed Electric FieldsEquipment
SmoothCut™ 1000Solids system• Capacity up to 60.000 kg/h• Belt width 800 mm• Systems for sinking and floating
products available
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Equipment design
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Equipment design
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Pulsed Electric FieldsEquipment
CoolJuice™ 1000
CoolDairy™ 1000
Liquids system• Capacity up to 10.000 kg/h• DN 25 or 50 treatment chamber• Fully integrated HACCP module
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Process validation
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1
2
3
4
5
6
7
8
52°C
53°C
55°C
45°C
45°C
46°C
35°C
35°C
Fibre-optic temperature measurement
Measuring pointElectric
Field5-25 kV/cm
Flow pattern2-60 cm/s
Temperature Field
35 – 70°C
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CCP 1 (T1)
CCP 2 (W, T2)
HACCP
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Pulsed Electric FieldsInstalled systems
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Pulsed Electric FieldsInstalled systems
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Installed Systems
1 x 3000 l/h13 gpm
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Pulsed Electric FieldsUpcoming commercial applications
New product development for snacks
Peeling improvement for tomato, prune, apricot etc.
Processing of tea, hemp for accelerated maturation
Microalgae, extraction of valuable ingredients
Drying enhancement
Casein conditioning as carrier for lipids
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www.elea-technology.comSneak preview into our pilot hall: http://elea-technology.com/360/
Our US distr
ibutor
FOOD PHYSICS
Boise, ID
www.food-physics.com