Determination of protein, total carbohydrates and crude fat contents of foxtail millet using effective wavelengths in NIR spectroscopy
文献类型: 外文期刊
第一作者: Chen, Jing
作者: Chen, Jing;Ren, Xin;Zhang, Qing;Shen, Qun;Chen, Jing;Ren, Xin;Zhang, Qing;Shen, Qun;Diao, Xianmin
作者机构:
关键词: Near infrared spectroscopy;Foxtail millet;Interval partial least squares (iPLS);Successive projections algorithm (SPA)
期刊名称:JOURNAL OF CEREAL SCIENCE ( 影响因子:3.616; 五年影响因子:3.891 )
ISSN: 0733-5210
年卷期: 2013 年 58 卷 2 期
页码:
收录情况: SCI
摘要: The near infrared spectroscopy methods for determining the protein, total carbohydrates and crude fat contents in foxtail millet were investigated. The samples were divided into calibration and validation subsets for multivariate modeling using the joint x-y distance (SPXY) algorithm. The interval partial least squares (iPLS) and the successive projections algorithm (SPA) coupled with multiple linear regression (MLR) methods were applied for variable selection during the modeling process. The coefficient of determination of validation (R-val(2)), the root mean square error of prediction (RMSEP) and the ratio of standard error of prediction to standard deviation (RPD) of the obtained optimum models were 0.94, 0.28 and 4.07 for protein, 0.92, 0.40 and 3.28 for total carbohydrates, and 0.70, 0.17 and 1.76 for crude fat, respectively. Prediction models using effective wavelengths were proposed for the three constituents. The results indicated that near infrared spectroscopy is a promising approach for predicting the protein, total carbohydrates and crude fat contents of foxtail millet rapidly and accurately. (C) 2013 Elsevier Ltd. All rights reserved.
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