儿茶素铅配合物的合成及其性能  

Synthesis and Properties of Lead Complex of Catechin

作　　者：熊金勇 李建昌 赖云 张陆兵 XIONG Jin-yong;LI Jian-chang;LAI Yun;ZHANG Lu-bing(Jiangxi Province Institute for Occupational Disease Prevention and Treatment,Nanchang 330006,China)

机构地区：[1]江西省职业病防治研究院,江西南昌330006

出　　处：《化工管理》2021年第35期83-84,共2页Chemical Engineering Management

基　　金：江西省中医药管理局科技计划(SZYYB20204572)。

摘　　要：儿茶素是茶叶中多酚类物质的主要成分,属于黄烷醇类化合物。儿茶素分子中的螯合位点与铅离子(Pb^(2+))发生反应生成儿茶素铅(Ⅱ)配合物,采用1,1-二苯基-2-苦基肼(DPPH)方法评价了儿茶素与铅(Ⅱ)配合物相对于儿茶素的自由基抗氧化活性。儿茶素与铅离子(Ⅱ)络合后清除自由基的能力增强。在日常生活中经常食用一些含有儿茶素的食物和饮品,可清除体内的自由基,使机体免受自由基的损伤,对降低人体内重金属离子的含量起着重要的作用。Catechin is the main component of polyphenols in tea and belongs to flavanols. The chelating site of catechin molecule reacts with lead ion(Pb^(2+)) to produce lead(Ⅱ) complex of catechin.the 1,1-diphenyl-2-picrylhydrazine(DPPH) method was used to evaluate the free radical antioxidant activity of catechin and lead(Ⅱ) complex relative to catechin. The free radical scavenging ability of catechin was enhanced after complexing with lead ion(Ⅱ). In daily life, food and drinks containing catechins are often eaten, which can remove free radicals in the body, prevent the body from free radical damage, and play an important role in reducing the content of heavy metal ions in the body.

关 键 词：儿茶素 儿茶素铅配合物 合成 清除 自由基 

分 类 号：O652[理学—分析化学]