一次性分离低咖啡碱茶多酚树脂的选择  

Selection of the suitable resin for single separation of decaffeinated tea-polyphenols

作　　者：贺佳[1] 李多伟[1] 智彩辉 刘长霞[1] 

机构地区：[1]西北大学生命科学学院,西安710068 [2]西安蓝晓科技新材料股份有限公司,西安710075

出　　处：《西北药学杂志》2012年第6期528-531,共4页Northwest Pharmaceutical Journal

摘　　要：目的以茶叶茶多酚、咖啡碱为检测产物,考察了10种大孔树脂对茶多酚、咖啡碱的吸附分离性能。方法采用LX系列和D101等树脂进行静态、动态吸附解吸实验。结果茶叶经LX-X5树脂吸附后,经体积分数为15%的乙醇洗涤,再以体积分数为75%的乙醇洗脱,洗脱产物中茶多酚解吸率达90%以上,质量分数达98%以上,咖啡碱质量分数低于0.06%。结论通过静态、动态吸附实验,筛选出一次性分离低咖啡碱含量茶多酚较为理想的吸附材料LX-X5树脂。Objective To investigate the suitable resin for adsorption and desorption of tea-polyphenols and caffeine by using tea-polyphenols and caffeine as the detection targets of the products.Method LX and D101 resins were used for the static and dynamic experiment of adsorption and desorption.Results After the tea extract adsorbed by LX-X5 resin and desorbed by 15% and 75% ethanol,the desorption rate of tea-polyphenols in products was more than 90%,and the purity was over 98%.The content of caffeine was under 0.06%.Conclusion According to the static and dynamic experiment of adsorption,we chose the best adsorption resin LX-X5 for single time separation of decaffeinated tea-polyphenols.

关 键 词：茶叶 茶多酚 咖啡碱 大孔树脂 吸附 解吸 

分 类 号：R284[医药卫生—中药学]