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Title: Measurement of Trans-Fatty Acids in Cereal Products Without Oil Extraction Using NIR Reflectance Spectroscopy

Author
item Kim, Yookyung
item Kays, Sandra

Submitted to: Annual Meeting of the Institute of Food Technologists
Publication Type: Abstract Only
Publication Acceptance Date: 3/30/2007
Publication Date: 7/28/2007
Citation: Kim, Y., Kays, S.E. 2007. Measurement of Trans-Fatty Acids in Cereal Products Without Oil Extraction Using NIR Reflectance Spectroscopy. Annual Meeting of the Institute of Food Technologists. Abstract 010-34, p. 53, 2007.

Interpretive Summary:

Technical Abstract: Near infrared (NIR) reflectance spectroscopy was evaluated as a rapid technique, to determine the trans-fatty acid content of ground cereal products. NIR spectra were obtained with a dispersive spectrometer and trans-fatty acids determined by modified AOAC Method 996.01. First derivative PLS1 models for trans-fatty acids were developed using five wavelength regions based on lipid absorption. PLS2 models were also developed based on the five wavelength regions and on correlations among trans-fatty acids, cis-fatty acids and total fat content. The optimum wavelength regions for prediction of trans-fatty acids for PLS1 were 700-2498 nm and 1600-2200 nm and for PLS2 was 1600-2200 nm. The PLS2 model improved prediction of trans-fatty acid content from SEP of 1.32 to 1.05% (range 0.05-11.59%) and r2 from 0.92 to 0.95 (1600-2200 nm region). The PLS2 model was suitable for screening of ground cereal products for trans-fatty acid with the 1600-2200 nm region containing the most information for model development.