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Abstract
AOAC Method 996.01, used to determine total fat in cereal foods as defined by the U.S. Nutrition Labeling and Education Act (NLEA), is laborious, time consuming and solvent dependent. Near-infrared (NIR) reflectance spectroscopy, a rapid and environmentally benign technique, was investigated as a potential method for prediction of total fat. NIR reflectance spectra (1104-2494 nm) of ground cereal products (n=72) were obtained using a dispersive grating spectrometer and total fat determined by AOAC Method 996.01. Using multivariate analysis, a modified partial least squares model was developed for total fat prediction, having a SECV of 1.12% (range 0.5-43.2%) and multiple coefficient of determination of 0.99. The model was tested with independent validation samples (n=36); all samples were predicted within NLEA accuracy. NIR reflectance spectroscopy, therefore, has considerable potential for determination of total fat in diverse cereal products for nutrition labeling and monitoring.