分步洗脱层析法制备茶多酚的工艺研究  

Stepwise elution absorption chromatography preparation of tea polyphenols

作　　者：高晓明[1] 张效林[2] 李振武[2] 

机构地区：[1]延安大学化工学院,陕西延安716000 [2]西北大学化工学院,陕西西安710069

出　　处：《食品与机械》2007年第4期88-91,共4页Food and Machinery

摘　　要：研究大孔树脂二级阶段洗脱层析法分离茶多酚、咖啡碱;考察树脂吸附、层析洗脱咖啡碱的性能及洗脱效果,确定XAD-4树脂为吸附剂,混合溶液及85%乙醇二阶段洗脱层析分离茶多酚、咖啡碱的优化工艺;建立树脂柱吸附茶多酚过程的传质模型。结果表明:所得茶多酚产品纯度可达95.56%,咖啡碱含量为3.62%,收率可达11.84%。Through 2-Stepwise elution chromatography, tea polyphenols （Tp） arid caffeine were separated with macroporous resin. The optimal process is that caffeine and tea polyphenols were 2-Stepwise eluted by mixed solution and 85% alcohol aqua with XAD-4 resin. Absorption mass transfer model for Tp was set up. The productivity of product reached 11.84%. The content of Tp and caffeine were 95.56% and 3.62% respectively. It proved to be simple, feasible, nontoxic, no pollution produced, safe, environmental benign.

关 键 词：茶多酚 咖啡碱 吸附层析 阶段洗脱 传质模型 

分 类 号：TQ28[化学工程—有机化工]