Spectrolytic GmbHPortable milk analysersproviding laboratory accuracy

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Milk analysis

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• 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

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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

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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

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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

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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

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Milk analysis parameters

Standard error : 0.04

Standard error : 0.09

Standard Error: 0.3

Results Products used

Lactose

Protein

Total Solids

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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

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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

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• 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 WiesentCEOinfo@spectrolytic.com