近红外光谱法快速检测大米蛋白质含量  

Rapid Measurement of Rice Protein Content by Near Infrared Spectroscopy

作　　者：刘建学[1] 吴守一[2] 方如明[2] 

机构地区：[1]洛阳工学院机械设计工程系,洛阳市471039 [2]江苏理工大学生物与环境工程学院,镇江市212013

出　　处：《农业机械学报》2001年第3期68-70,共3页Transactions of the Chinese Society for Agricultural Machinery

摘　　要：采用不同粒度的大米样品 ,用近红外光谱分析方法建立了其蛋白质含量的预测模型。大米蛋白质含量的模型预测值与化学测定值之间的相关系数达到 0 .94,预测标准差、平均相对误差及平均绝对偏差分别为0 .43、2 .1%和 0 .2 1。The protein content (PC) in rice is one of the indexes to evaluate the nutrition and taste quality of rice. Normal determination of the PC by chemical method is of high expense and time consuming. So the protein contents of samples with various dimensions were measured by the near infrared spectroscopy (NIRS) and the prediction models were established. It was discovered that the less the particle is, the stronger the capability of the prediction model. The correlation coefficient between prediction value of rice PC and chemical value is 0.94, the standard error of prediction (SEP) is 0.43, the mean relative error (MRE) is 2.1%, and the mean absolute bias is 0.21.

关 键 词：大米 蛋白质含量 光谱分析 主成分分析 

分 类 号：TS212.7[轻工技术与工程—粮食、油脂及植物蛋白工程] TS210.1[轻工技术与工程—食品科学与工程]