柑橘品质的近红外光谱无损检测  

Non-Destructive Testing for Quality Parameters in Orange by NIR

作　　者：袁雷[1] 刘辉军[1] 余桂英[1] 郑颖君[1] 

机构地区：[1]中国计量学院计量技术工程学院,杭州市下沙高教园区310018

出　　处：《光谱实验室》2006年第4期820-822,共3页Chinese Journal of Spectroscopy Laboratory

摘　　要：选择不同谱区范围的近红外光谱,利用偏最小二乘法对柑橘中总酸、总糖和维生素三种组分建立数学预测模型并进行优化,三种组分的化学值与近红外预测值的相关决定系数分别为:总酸r2=0.959,总糖r2=0.970和维生素Cr2=0.973,所建模型具有实际应用价值。From the NIR of orange in different regions,the mathematical model for the total acid,total sugar and vitamin in orange were built up by PLS. The correlations between the chemical values （true values） of the three compounds and the NIR predicated values are 0. 959,0. 970 and 0. 973,respectively. The mathematical model is suitable in practice.

关 键 词：近红外光谱 柑橘 总酸 总糖 维生素C 

分 类 号：O657.33[理学—分析化学]