作　　者： ; ; ; ; (周学秋）;

机构地区： 华南农业大学农学院

出　　处： 《华南农业大学学报》 2004年第2期1-4,共4页

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

领　　域： [农业科学]