Near-infrared spectroscopy product evaluation

Borer, M.W. Zhou, X. Hays, D.M. Hofer, J.D. White, K.C. Evaluation of key sources of variabihty in the measurement of pharmaceutical drug products by near infrared reflectance spectroscopy. J. Pharm. Biomed. Anal. 1998, 17, 641-650. 

Near-infrared reflectance spectroscopy has been traditionally developed in animal science to evaluate the chemical composition of forages (4, 5, 15). Compared with forages, little information is available on the suitability of NIR spectroscopy in the estimation of the chemical composition and nutritive value of by-product materials derived from livestock. The information available in the literature relates only to the use of NIR spectroscopy to determine gross chemical composition such as dry matter (DM), crude protein (CP), fat (oil), and amino acid content in a few livestock animal by-products. Examples of NIR applications in animal by-products are summarized in Tables 8.3.3 and 8.3.4. Good correlations were found for DM and CP in the different animal by-products. Although good correlations were found for some amino acids, Fontaine et al. (22) stated that the calibration for sulfur-containing amino acids are... 

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