微波法从茶叶中提取茶多酚  

The Application of Microwave in Extracting Tea - polyphenols

作　　者：荆琪[1] 邓宇[1] 

机构地区：[1]天津科技大学化工学院,天津300222

出　　处：《中国食品添加剂》2003年第1期25-26,30,共3页China Food Additives

摘　　要：介绍了以绿茶茶末为原料,以乙醇为介质,用微波加热法提取茶多酚,并通过改变溶剂浓度、微波功率、提取时间等条件对产品提取率的影响进行了探讨,获得最佳的提取条件。结果表明,料料比(w/v)1:9,时间18s,微波浸提2次,茶多酚浸提率达92.7％,该方法与传统提取方法相比,提取率高,省溶剂,大大提高了提取效率。Extraction technology of tea-polyphones with microwave radiation was checked and modified in this study . As a result , the optimal technological condition were as follows: extraction power was 320W, extraction solvent was 50 % , extraction time was 18s , ratio of liquor and material was 9:1, the of extraction stage was 2. and the extraction yield of pigment was 92.7% .

关 键 词：茶叶 提取 茶多酚 抗氧剂 微波加热法 

分 类 号：TS202.3[轻工技术与工程—食品科学]