milk analysis spectrolytic
TRANSCRIPT
Spectrolytic GmbHPortable milk analysersproviding laboratory accuracy
2
Milk analysis
3
• Milk analysis is becoming more important for efficiency and herd management reasons.
• Being able to measure, in real time, key parameters of the milk can be used to optimise
feeding, detect illnesses and improve overall performance.
• Milk adulteration is also a growing problem worldwide where previously good milk is
contaminated with additives.
• In 2008 a Chinese milk manufacturer was charged for adding Melamine which falsely elevates
the protein contents in infant powder milk, as a result 13,000 babies were taken ill for kidney
inflammation and bladder carcinoma.
• Spectrolytic provides a compact and accurate solution for real time milk analysis application
based on analysing the mid-infrared absorption spectrum of a milk sample.
Introduction
4
What is mid-infrared spectroscopy
• A broad band emitter shines light through a samples
• The molecules in the sample will absorb certain wavelength of the light whist others pass through the sample
• The wavelength of the light that is absorbed by the sample can be linked to certain molecular structures that unequivocally identifies the molecules.
• Typically light in the wavelength range from 2.000nm to 12.000nm (mid infrared wavelength region) provides the highest absorption signal whiles still providing a unique molecular identifier
• Monitoring the changes in the absorption spectrum of a sample over time provides information about
the concentration of relevant molecules in the sample.
Sample
50010001500200025003000350040000
10
20
30
40
50
60
wavenumber (cm -1)
tran
smis
sion
(%)
Broad band emitter Absorption spectrum
5
Transmission & ATR Spectrometer Principles
multi-element IR-Emitter
ATRLVF
Pyroelectriclinearray
oilmulti-element
IR-emittercuvette LVF pyroelectric line
sensor
-Light is emitted from broad band source-Light penetrates cuvette with sample fluid/gas-Certain wavelength get absorbed by sample-Light is separated into its spectral components by Linear Variable Filter (LVF)-Signals (as function of wavelength) are detected with sensor
-Light is emitted from broad band source-Light is coupled into an ATR crystal-Sample fluid is placed on top of ATR crystal-Light bounces in a controlled way through ATR crystal and interacts with the sample on its surface-Certain wavelength get absorbed by sample-Light is separated into its spectral components by Linear Variable Filter (LVF)-Signals (as function of wavelength) are detected with sensor
6
Introduction
Milk samples Spectrometer Data Analysis Interpretation
0.5 1 1.5
0.5
1
1.5
measured Ypr
edic
ted
Y
predicted vs. measured - Oil1 - TAN - MIR
Milk sample is poured onto
the spectrometer
Spectrometer torecord a spectrum
Spectrometer analyses data andcompares against
laboratory standard
Feedback about milk quality within 2 minutes
Simple to use, accurate and quick
7
Product Portfolio
Transmission Spectrometer
Spectral range:- LVF1: 5.5-11µm (1808-909cm-1)- LVF2: 2.5-5µm (4000-2000cm-1)Voltage supply:12-33V / 3WCommunication interfaces:Ethernet, CANopen, USBAditional ports: 16GPIOs, I²C, SPI, UARTCuvette:demountable, 15-250µm spacer
ATR Spectrometer
Spectral range:- LVF1: 5.5-11µm (1808-909cm-1)- LVF2: 2.5-5µm (4000-2000cm-1)Voltage supply:5V / 3WCommunication interfaces:Ethernet, Bluetooth, USBATR:- ZnSe, 9 reflections- ZnS, 9 reflections- Diamond, 9 reflectionsAdditions:- Through flow plate- Options for fixed installation
Lab in a box
Truly portable solution for instant analysis.
Simplified software called “Express mode”
Battery operated
No need for additional wet chemistry
Homogeniser available
8
Milk analysis parameters
Standard error : 0.04
Standard error : 0.09
Standard Error: 0.3
Results Products used
Lactose
Protein
Total Solids
9
Milk adulteration
Standard error : 0.23g/kg
Standard error : 0.64g/kg
Urea contamination >20g/l
All contamination levels are easily detectable
Results Products used
10
Quantitative milk analysis
Component Accuracy /RMSE %Fat 0.40
Protein 0.09
Lactose 0.04
SNF 0.09
Total Solids 0.28
Urea 1.0g/kg
Melamime 0.23g/kg
Glucose 0.64g/kg
Note: Other parameters can also be detected. Please contact Spectrolytic for detailed discussions
11
• Spectrolytic’s portable milk analyser provides fast and accurate prediction.
• Data can be represented in a qualitative or quantitative format
• Express mode software user interface can be configured to be used by untrained personnel.
• Portable milk homogeniser is available achieving 2um particle homogenisationof raw milk
Summary
Spectrolytic GmbH
Portable milk analyserfor quick and accurate analysis
Dr.-Ing. Benjamin [email protected]