食品科学 ›› 2006, Vol. 27 ›› Issue (10): 165-167.

• 基础研究 • 上一篇    下一篇

普洱茶茶多酚及清除·OH能力的研究

 侯冬岩,  回瑞华,  唐蕊,  刘晓媛, 李学成   

  1. 鞍山师范学院化学系
  • 出版日期:2006-10-15 发布日期:2011-11-16

Study on the Catechin and the Scavenge of ·OH Radical for Puer Teas

 HOU  Dong-Yan,   Hui-Rui-Hua,   Tang-Rui,   Liu-Xiao-Yuan, LI  Xue-Cheng   

  1. Department of Chemistry, Anshan Normal University, Anshan 114007, China
  • Online:2006-10-15 Published:2011-11-16

摘要: 采用光谱法测定普洱茶中茶多酚的含量。方法的回收率为94%~105%,变异系数小于1.00%。用邻菲罗啉—Cu+—H2O2化学发光体系,结合流动注射技术研究普洱茶清除·OH的能力。实验结果表明,普洱茶中茶多酚的含量和清除·OH的能力,随着贮藏时间延长、贮藏温度提高而下降。

关键词: 普洱茶, 茶多酚, 化学发光, 流动注射

Abstract: Determination of catechin in puer teas by spectrophotometry method was described, the coefficient is 94%~105% and the efficient of variation is 1.00 %. The effect of puer teas on the scavenge of·OH was measured by the chemiluminescence system of 1,10-phenanthroline-cuprous chloride-hydrogen peroxide and flow-injection technology. The optimum conditions were investigated by examining the influence of various factors. The results show that the contents of catechin and scavenging ·OH radical in puer-tea were decreased with the increasing of time and temperature of storage.

Key words: puer teas, catechin, chemiluminescence, flow-injection