β-环糊精聚合物的合成及其对儿茶素的吸附  

Preparation of β-Cyclodextrin Polymers and Their Selective Adsorption of Catechins

作　　者：尚彦菁[1] 赵铭春[1] 张利[1] 王恩举[1] 

机构地区：[1]海南师范大学化学与化工学院,海南海口571158

出　　处：《海南师范大学学报（自然科学版）》2012年第2期191-193,196,共4页Journal of Hainan Normal University（Natural Science）

基　　金：海南省教育厅高等学校科学研究项目(Hjkj2011-25);国家大学生创新性实验计划(201030)

摘　　要：合成了β-环糊精-环氧氯丙烷交联聚合物和纤维素负载β-环糊精聚合物,并通过薄层色谱研究了它们对绿茶提取物中咖啡因和儿茶素多酚的吸附性能.结果表明:两种聚合物都可以快速吸附儿茶素,但几乎不吸附咖啡因,因此,它们可以作为绿茶提取物脱咖啡因的吸附材料.而且,它们对儿茶素类物质也表现出一定的吸附选择性:对酯型儿茶素比对非酯型儿茶素的选择性更高些.Two β-cyclodextrin polymers,β-cyclodextrin-epichlorohydrin polymer and β-cyclodextrin grafted cellulose, were prepared. Their adsorption behaviors for catechins and caffeine from green tea extract were investigated by thin-layer chromatography. The results show that both polymers could rapidly adsorb catechins, but they had no adsorption for caffeine. Hence both of them could be used for decaffeination of green tea extract. They also showed higher selectivity for gallate-type catechins than for non-gallate-type catechin.

关 键 词：Β-环糊精聚合物 儿茶素 脱咖啡因 

分 类 号：O629[理学—有机化学]