食品科学 ›› 2002, Vol. 23 ›› Issue (12): 109-111.

• 分析检测 • 上一篇    下一篇

绿茶及其茶饮料中茶多酚的光谱分析

 侯冬岩, 回瑞华, 关崇新, 刘晓媛   

  1. 鞍山师范学院化学系
  • 出版日期:2002-12-15 发布日期:2011-12-31

Catechin Determination Study in Green Teas by Three Wavelength Spectrophotometry

 HOU  Dong-Yan, HUI  Rui-Hua, GUAN  Chong-Xin, LIU  Xiao-Yuan   

  • Online:2002-12-15 Published:2011-12-31

摘要: 采用三波长-光谱法测定绿茶及其茶饮料中茶多酚的含量,有效地消除了随浓度不同发生的本底漂移及吸收峰不对称给定量分析造成的影响,并校正了基于干扰组分(添加剂)的吸收光谱具有线形吸收产生的基线倾斜。本法的回收率为95.2%~102.0%,变异系数小于1.05%。方法的准确度与精密度均令人满意,而且操作简便易行。

关键词: 茶多酚, 绿茶及其茶饮料, 三波长-光谱法

Abstract: Determination of catrchin in green teas and tea beverages was by carried out wavelength spectrophotometry to ellmlnate the absorbance error of interferlng cpmponents,turbld solutlon and the scattering effect.The Back-ground change with concentration change and asymmetrlc absorptlon and the problems could be solved also.The method was more advantageous than trandltlonal spectrophotometry method.The tecoverwas 95.2%~102.0%and the coefficlent of varlation was 1.05%.

Key words: Catechln , Natural tea and tea beverages, Three wavelength spectrophotometry