从绿茶中同时提取茶多酚和咖啡碱  

Simultaneous Extraction of Tea Polyphenols and Caffeine from Green Tea

作　　者：海力茜[1] 孙怀静[1] 李之平 

机构地区：[1]新疆医学院药学系 [2]新疆科学院化学所

出　　处：《卫生研究》1998年第3期195-196,共2页Journal of Hygiene Research

摘　　要：以绿茶为原料，同时提取茶多酚和咖啡碱，对影响浸提过程的因素进行了分析。结果显示；随着浸提时间的增加，浸提液中茶多酚和咖啡碱的含量逐步增加；随着浸提次数的增加，浸提液中茶多酚和咖啡碱的含量逐渐减少，并探讨了ｐＨ对茶多酚钙沉淀的影响。ea polyphenols and caffeine were extracted simultaneously from green tea.The factors influencing on the process of impregnation and extraction were studied.The result indicated that the content of tea polyphenols and caffeine in tea was increased with the duration of extraction and decreased with the frequency of extraction.The authors discuss the effect of pH on the precipition of calcium tea polyphenols.

关 键 词：茶多酚 咖啡碱 提取 分离 绿茶 

分 类 号：TQ464.4[化学工程—制药化工] TS272.51[农业科学—茶叶生产加工]