Analytical Sciences
Online ISSN : 1348-2246
Print ISSN : 0910-6340
Original Papers
Feasibility of Near-Infrared Spectroscopy to Detect and to Quantify Adulterants in Cow Milk
Sumaporn KASEMSUMRANWarunee THANAPASEArtaya KIATSOONTHON
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2007 Volume 23 Issue 7 Pages 907-910

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Abstract

Cow milk adulteration involves the dilution of milk with a less-expensive component, such as water or whey. Near-infrared spectroscopy (NIRS) was employed to detect the adulterations of milk, non-destructively. Two adulteration types of cow milk with water and whey were prepared, respectively. NIR spectra of milk adulterations and natural milk samples in the region of 1100 - 2500 nm were collected. The classification of milk adulterations and natural milk were conducted by using discriminant partial least squares (DPLS) and soft independent modelling of class analogy (SIMCA) methods. PLS calibration models for the determination of water and whey contents in milk adulteration were also developed, individually. Comparisons of the classification methods, wavelength regions and data pretreatments were investigated, and are reported in this study. This study showed that NIR spectroscopy can be used to detect water or whey adulterants and their contents in milk samples.

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© 2007 by The Japan Society for Analytical Chemistry
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