| 便携式近红外仪检测牛奶中脂肪、蛋白质及干物质含量 |
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| 作者姓名： | Li XY Wang JH Huang YW Han DH |
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| 作者单位： | 1. 中国农业大学食品科学与营养工程学院,北京,100083
2. 许昌学院化学化工学院,河南许昌,100083 |
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| 基金项目： | 国家"十一五"科技支撑计划项目 |
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| 摘 要： | 采用便携式近红外光谱仪,结合偏最小二乘回归法,研究了牛奶脂肪、蛋白质和干物质含量的测定方法,建立了近红外漫反射定最分析模型.结果显示,脂肪、蛋白质和干物质模型相关系数(R2)分别为0.98,0.95,0.98,建模集标准残差(RMSEC)分别为0.187,0.105,0.217,验证集标准残差(RMSEP)分别为0.1...
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| 关 键 词： | 便携式短波近红外仪 漫反射 牛奶成分 偏最小二乘法 |
Determination of fat, protein and DM in raw milk by portable short-wave near infrared spectrometer |
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| Li XY,Wang JH,Huang YW,Han DH.Determination of fat, protein and DM in raw milk by portable short-wave near infrared spectrometer[J].Spectroscopy and Spectral Analysis,2011,31(3):665-668. |
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| Authors: | Li Xiao-yun Wang Jia-hua Huang Ya-wei Han Dong-hai |
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| Institution: | College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China. xiaoyunli_2006@163.com |
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| Abstract: | Near infrared diffuse reflectance spectroscopy calibrations of fat, protein and DM in raw milk were studied with partial least-squares (PLS) regression using portable short-wave near infrared spectrometer. The results indicated that good calibrations of fat and DM were found, the correlation coefficients were all 0.98, the RMSEC were 0.187 and 0.217, RMSEP were 0.187 and 0.296, the RPDs were 5.02 and 3.20 respectively; the calibration of protein needed to be improved but can be used for practice, the correlation coefficient was 0.95, RMSEC was 0.105, RMSEP was 0.120, and RPD was 2.60. Furthermore, the measuring accuracy was improved by analyzing the correction relation of fat and DM in raw milk This study will probably provide a new on-site method for nondestructive and rapid measurement of milk. |
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