Tea is one of the most popular beverages, consumed by over two thirds of the world"s population; but the aluminum accumulation property of tea plant is becoming the focus of many researches because of aluminum"s known adverse effect on human health. Investigation of the interactions of catechins with A1^3+ showed that during the interaction of catechins with A1^3+, the UV-vis spectrum of catechins was changed. Absorption of EGCG at 274 nm decreased and increased at 322 nm; EC and C"s at 278 nm changed little. The ratio of A1^3+ to EGCG was 1:1 in pH 5.0 buffer solution; in pH 6.2 buffer solution, the ratio in the A1-EGCG complex was 1:1. Interestingly, while the ratio reached to over 2, after the complex of A1-EGCG started polymerization, the ratio in the polymer was 2:1. In pH 6.2 buffer solution, the complex behavior of C with A1^3+ was the same as that of EGCG, with a little difference for EC. When the ratio of A1^3+ to EC was1. It was found that the ratio of A1^3+ to EC in the polymer was 1:1. Polymerization of A1-catechin complexes might reduce aluminum absorption in the intestine. Kow value was also employed to study the properties of aluminum species in tea infusion (at gastric and intestine pH condition) and the effect of catechins and tea polyphenols on Kow in buffer solution. Results showed that Kow value rose much higher at the intestine pH than at the gastric pH. Tea polyphenols and catechins could greatly reduce aluminum Kow value in acetic buffer,indicating that these compounds may reduce aluminum absorption during tea intake.【Interaction of catechins with aluminum in vitro】完成机构：[1]DepartmentofTeaSciences,ZhejiangUniversity,Hangzhou310029,China [2]ZhejiangHzsunPharmaceuticalCo.Ltd,Taizhou318000,China
推荐阅读
- youbelongwithme意思
- Transport of Nitrogen Assimilation in Xylem Vessels of Green Tea Plants Fed with NH4-N and NO3-N
- Synthesis of calixarenes and their extraction performance for ester catechins
- is she with you？的语法结构 是 ？
- in contrast to 和 in contrast with的区别？
- swithland哪个国家
- “tight with you”是什么意思?
- Excel VBA End With结构，专为对象而生
- Effect of Complex Coordinating Tea Polysaccharide with Cerium on Degradation of Plasmid DNA and Orga
- python读取文件的方法有哪些？python怎么用With关键字读取文件？