甘蔗蔗汁锤度和还原糖分傅立叶变换近红外定量分析数学模型  

Mathematic models for quantitative analysis of Brix and reducing sugars in sugarcane juice with Fourier transform near infrared spectroscopy

作　　者：曹干[1] 谭中文[2] 梁计南[2] 龙永惠[1] 周学秋 

机构地区：[1]广东省农业科学院作物研究所,广东广州510640 [2]华南农业大学农学院,广东广州510642 [3]布鲁克光谱仪器公司,北京100081

出　　处：《华南农业大学学报》2004年第2期1-4,共4页Journal of South China Agricultural University

基　　金：广东省农业厅糖蔗良种繁育基地项目(2002 232);广东省农作物遗传改良重点实验室资助项目(2002 13)

摘　　要：以傅立叶变换近红外光谱技术为基础,采用透射测定方式和PLS算法,建立蔗汁锤度和还原糖分定量分析数学模型.蔗汁锤度和还原糖分预测数学模型的决定系数(R2)分别为0 9990和0 9953,均方根差分别为0 1150%和0 0722%,预测误差接近常规分析方法的误差.Basic on the technique of Fourier transform near infrared (FT-NIR) spectroscopy,the calibration models for quantitative analysis of Brix and reducing sugars in sugarcane juice were developed by using transmission mode and calibrating with partial least square (PLS) algorithm. The determination coefficients (R^2) of the predicted models for Brix and reducing sugars in juice were (0.999 0) and (0.995 3), respectively; the root mean square errors of cross validation were (0.115 0)% and (0.072 2)% for Brix and reducing sugars in juice, respectively. The predictive errors measured by FT-NIR methods were close to those by routine laboratory methods.

关 键 词：甘蔗 蔗汁锤度 还原糖分 傅立叶变换近红外光谱 定量分析 数学模型 品质分析 

分 类 号：S566.1[农业科学—作物学]