应用分光光度法测定枸杞半成品饮料中的甜菜碱含量

Spectrophotometry for Determination of Bataine in Fructus Lysii SemiFinished Drinkables

基于雷氏盐测定枸杞中甜菜碱的分光光度法，对枸杞原汁及浓缩汁中的甜菜碱含量进行测定。采用新的前处理方法，使枸杞浓缩汁中的干扰组分得到有效去除，取得了满意的实验结果。实验测得枸杞浓缩中甜菜碱含量为０．０４％～０．０５％，平均回收率９７．８％，变异系数２．９３％．

On the basis of spectrophotometric determination of Bataine in Fructus Lysii by the procipitation with Remecke Salt,have determined content of Bataine in Fructus Lysii primary juice and concentrate juice. using new pretreat method,the interference conposition can be efficacious separated and being able to get satisfactory experiment rusults: The rate of the impartial recovery is 97.8%,the coefficient of variation is 2.93% when the Bataine content is 0.04%-0.05%,in the concentrate juice.