Journal
FOOD RESEARCH INTERNATIONAL
Volume 43, Issue 5, Pages 1416-1422Publisher
ELSEVIER
DOI: 10.1016/j.foodres.2010.04.006
Keywords
Conjugated linoleic acid; Fatty acids; FT-NIR; Fibre optics probe; Pig fat
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Funding
- Grup Baucells Alimentacio S.A (Tona, Barcelona, Spain)
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NIR technology was used to analyze the fatty acid composition of fat tissue from conjugated linoleic acid fed pigs by direct application of a fibre optics probe on two different locations of subcutaneous fat. One hundred and fifty-three pigs were fed three different diets and the fatty acid profile of subcutaneous fat from Gluteus medius was analyzed using gas chromatography and FT-NIR in a longitudinal and transversal cut. Spectra were acquired using a Bruker Optics Matrix-F duplex spectrometer equipped with a fibre optics probe (IN-268-2). Total saturated, monounsaturated and polyunsaturated together as well as oleic and stearic fatty acids were predicted accurately (R-2 > 0.70). myristic, and linoleic fatty acids were predicted with lower accuracy (0.60 < R-2 <0.70), while palmitic, asclepic and alpha-linolenic fatty acids were poorly predicted (R-2 < 0.60). Results indicated that NIR technology has potential as a rapid tool to discriminate carcasses from animals fed diets with different fatty acid composition by a direct measurement on the fat from the ham. (C) 2010 Elsevier Ltd. All rights reserved.
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