Citation: Le Ming SHI, Zhi Hong XU, Zhong Xiao PAN, Zhi Liang LI, Yan Lu YAN, Mao JIN. RAPID DETERMINATION OF PROTEIN IN MILLET BY FOURIER TRANSFORM NEAR-INFRARED (FTNIR) DIFFUSE REFLECTANCE SPECTROSCOPY[J]. Chinese Chemical Letters, ;1990, 1(3): 247-250. shu

RAPID DETERMINATION OF PROTEIN IN MILLET BY FOURIER TRANSFORM NEAR-INFRARED (FTNIR) DIFFUSE REFLECTANCE SPECTROSCOPY

a Laboratory of Computer Chemistry Institute of Chemical Metallurgy Chinese Academy of Sciences Beijing 100080;
b Central Laboratory Beijing Agricultural University Beijing 100094

Received Date: 19 March 1990

In this paper, the Fourier transform near-infrared (FTNIR) diffuse reflectance spectroscopy is applied for the rapid determination of protein in millet.The partial least-squares (PLS) regression is successfully used as an effective multivariate calibration technique.The calibration set is composed of 20 standard millet samples that the protein contents were determined by the traditional Kjeldahl method.The optimal model dimension is found to be 5 by cross-validation.22 millet samples were determined by the proposed FTNIR-PLS method.The correlation coefficient between the concentration values obtained by the FTNIR-PLS method and the traditional Kjeldahl method is 0.9805.The standard error of prediction (SEP) is 0.28% and the mean recovery is 100.2%.The proposed method has been successfully applied for the routine analysis of protein in about 10,000 grain samples.
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