Compositional Analysis of Whey Powders Using Near Infrared Diffuse Reflectance Spectroscopy |
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| Authors: | R. J. BAER J. F. FRANK M. LOEWENSTEIN G. S. BIRTH |
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| Affiliation: | Author Baer is affiliated with the Dairy Science Dept., South Dakota State Univ., Brookings, SD 57007-0647.;Authors Frank and Loewenstein are with the Animal &Dairy Science Dept, Univ. of Georgia, Athens, GA 30602.;Author Birth is affiliated with the USDA-SEA Russell Research Center, Athens, GA 30602. |
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| Abstract: | Compositional analysis data for 47 whey powders (including sweet whey, acid whey, demineralized delactosed whey and whey protein concentrates) were correlated with near infrared reflectance (NIR) measurements. The most useful wavelengths for determining constituent concentrations were chosen from 19 pre-selected wavelengths by using linear regression analysis. Results indicate that samples to be used for NIR calibrations should be similar in composition and should represent a limited range of constituent concentrations. Individual NIR calibrations need to be developed for each type of whey powder to be analyzed. |
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