食品科学 ›› 2003, Vol. 24 ›› Issue (3): 44-46.

• 基础研究 • 上一篇    下一篇

微波对茶叶主要活性成分咖啡碱、茶多糖结构的影响研究

 汪兴平, 周志, 莫开菊, 张家年   

  1. 湖北民族学院园艺系,华中农业大学食品科技系
  • 出版日期:2003-03-15 发布日期:2011-12-13

Studies on the Microwave Treatment Effect on the Structures of Caffeine and Tea-polysaccharide in Tea

 WANG  Xing-Ping, ZHOU  Zhi, MO  Kai-Ju, ZHANG  Jia-Nian   

  • Online:2003-03-15 Published:2011-12-13

摘要: 本文以中、低档绿茶为原料,称取一定量的茶叶末,用一定量的水,在解冻档微波处理3min,结合水浴浸提3次,经分离、纯化所得茶多糖、咖啡碱制品,采用紫外和红外光谱分析,研究了微波对绿茶主要活性成分—咖啡碱和茶多糖结构的影响。结果表明:微波对咖啡碱和茶多糖制品的化学结构无影响。

关键词: 微波, 茶叶, 咖啡碱, 茶多糖, 结构

Abstract: By using mid -grade and lowgrade green tea as rawmaterial,the chemical structures of caffeine and tea -polysaccharide extracts by mic rowave treatment were studied in the paper.By using purified water as the solvent,tea was extractedunder mic rowave treatment,thenthe greentea was leached3times withpurifiedwater.The caffeine and the -polysaccharid e were separated fromthe extracted s olution and purified.The results of the analysis of UV -Vis and IRshowed that the microwave had no effecf on the chemical structures of caffeine and tea -polysaccharide.

Key words: microwave, tea, caffeine, tea -poly sacharide, structure