| 傅里叶变换近红外光谱法测定大麦中蛋白质、淀粉和赖氨酸含量 |
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| 引用本文： | 闵顺耕,覃方丽,李宁,于飞键.傅里叶变换近红外光谱法测定大麦中蛋白质、淀粉和赖氨酸含量[J].分析化学,2003,31(7):843-845. |
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| 作者姓名： | 闵顺耕 覃方丽 李宁 于飞键 |
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| 作者单位： | 中国农业大学应用化学学院,北京,100094 |
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| 摘 要： | 采用傅里叶变换近红外光谱法测定大麦中蛋白质、淀粉、赖氨酸的含量，并用光谱影响值法(leverage)对异常值进行判断和处理。蛋白质、淀粉和赖氨酸含量近红外光谱分析模型的测定系数R。分别为0．985、0．973和0．978；检验集的化学值与模型预测值的相关系数r分别为0．9853、0．9644和0．9172，分析模型的预测相对标准偏差RSD分别为4．0％、2．4％和5．4％，该结果可替代经典分析方法，满足农产品快速分析的需要。
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| 关 键 词： | 傅里叶变换近红外光谱法 测定 大麦 蛋白质 淀粉 赖氨酸 含量 偏最小二乘法 异常值 |
Determination of Protein, Starch and Lysine in Barley by Fourier Tansform Near Infrared Spectroscopy |
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| Min Shungeng,Qin Fangli,Li Ning,Yu Feijian.Determination of Protein, Starch and Lysine in Barley by Fourier Tansform Near Infrared Spectroscopy[J].Chinese Journal of Analytical Chemistry,2003,31(7):843-845. |
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| Authors: | Min Shungeng Qin Fangli Li Ning Yu Feijian |
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| Abstract: | The contents of protein, starch and lysine in barley were determined by Fourier transform near-infrared (FT-NIR) spectroscopy. Partial least square method was used to build a NIR model. Determination coefficient R2 of protein, starch and lysine is respectively 0.985,0.973,0.978. The correlation coefficient r of independent validation set is 0.9853, 0.9644 and 0.9172 respectively, and relative standard deviation (RSD) is 4 0%,2 4%,5.4% respectively. The outlier test of sample spectra and property value is also discussed in here. |
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| Keywords: | Protein starch lysine barley near-infrared spectroscopy partial least square outlier |
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