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ARS Home » Research » Publications at this Location » Publication #136500
Title: CALORIE MEASUREMENT BY NIRS

Author
item KAYS, SANDRA
item BARTON II, FRANKLIN

Submitted to: US Japan Nutritional Research Panel
Publication Type: Abstract Only
Publication Acceptance Date: 10/2/2002
Publication Date: 12/1/2002
Citation: KAYS, S.E., BARTON II, F.E. CALORIE MEASUREMENT BY NIRS. THE 31ST UNITED STATES-JAPAN NUTRITIONAL RESEARCH PANEL. 2002. ABSTRACT. P. 30.

Interpretive Summary:

Technical Abstract: Near infrared (NIR) spectroscopy has been used in foods for the rapid assessment of several macro-nutrients, however, little is known about its potential for evaluation of utilizable energy of foods. Using NIR reflectance spectra (1104-2494 nm) of ground cereal products (n=127) and values for energy measured by bomb calorimetry, chemometric models were developed for the prediction of gross energy and available energy of diverse cereal food products. Standard errors of cross validation for NIR prediction of gross energy (range 4.05-5.49 kcal/g), energy of samples after adjustment for unutilized protein (range 3.99-5.38 kcal/g) and energy of samples after adjustment for unutilized protein and insoluble dietary fiber (range 2.42-5.35 kcal/g) were 0.053, 0.053 and 0.088 kcal/g, respectively, with multiple coefficients of determination of 0.96. Use of the models with independent validation samples (n=58) gave predicted energy values within the accuracy required for U.S. nutrition labeling legislation. NIR spectroscopy, thus, provides a rapid and acceptable method for predicting energy of diverse cereal foods