欢迎访问《茶叶科学》,今天是

茶叶科学 ›› 2004, Vol. 24 ›› Issue (3): 201-206.doi: 10.13305/j.cnki.jts.2004.03.010

• • 上一篇    下一篇

不同茶样冲泡浸出液对NO- 2清除作用的体外试验研究

周才琼, 周张章, 范勇, 张鹰, 阳长敏   

  1. 西南农业大学食品科学学院,重庆 400716
  • 出版日期:2004-09-25 发布日期:2019-09-16
  • 作者简介:周才琼(1964— ),女,副教授,主要从事食品营养化学及茶叶化学的教学及科研。

Effect of Different Tea Infusions on NO- 2 Eliminating in Vitro Experiment

ZHOU Cai-qiong, ZHOU Zhang-zhang, FAN Yong, ZHANG Ying, YANG Chang-min   

  1. Food Science College, Southwest Agricultural University, Chongqing 400716, China
  • Online:2004-09-25 Published:2019-09-16

摘要: 本实验以绿茶、乌龙茶等八个茶样为试材,在体外模拟胃液pH条件下,测定自然冲泡下不同浓度茶样浸出液对NO- 2的清除率。结果表明,各茶样对NO- 2均有良好的清除效果,在较低的固液比时清除率随浓度的增加而增加;在8个茶样中,以下关沱茶、乌龙茶和绿茶对NO- 2清除效果最好;多酚类是主要活性成分,但清除作用仍受多因素影响;固液比1∶50~1∶100为饮茶的较好浓度。

关键词: 茶, 活性成分, 亚硝酸盐, 体外试验

Abstract: The green tea、Oolong tea and other six teas were used as the test samples, and the NO- 2-eliminating rate of different concentration of tea infusions was tested under the pH conditions in stomach. The results showed that all teas can remove NO- 2 efficiently, And when the concentration is lower than1:50, the scavenging capability rised with the increasing of the tea concentration. Polyphenols is the main active component, but many factors may influence the NO- 2-scavenging rate. Xiaguan tuocha, Oolong tea and Green tea showed the best effect in removeing NO- 2 among all samples, and the concentration of tea ranged from 1:50 to 1:100 is regarded as the good ratio for drinking.

Key words: Tea, Active component, Nitrate, in vitro, Experiment

中图分类号: