物理化学学报 >> 2010, Vol. 26 >> Issue (01): 66-72.doi: 10.3866/PKU.WHXB20100137

胶体及界面化学 上一篇    下一篇

EGCG在Tween 80胶束体系中的性质

刘天晴, 高小刚   

  1. 扬州大学化学化工学院, 江苏 扬州 225002
  • 收稿日期:2009-06-16 修回日期:2009-10-12 发布日期:2009-12-29
  • 通讯作者: 刘天晴 E-mail:tqliu@yzu.edu.cn

Properties of Epigallocatechin-3-Gallate in Tween 80 Micelle

LIU Tian-Qing, GAO Xiao-Gang   

  1. School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, Jiangsu Province, P. R. China
  • Received:2009-06-16 Revised:2009-10-12 Published:2009-12-29
  • Contact: LIU Tian-Qing E-mail:tqliu@yzu.edu.cn

摘要:

通过离子萃取技术, 从黄山绿茶中提取高纯度儿茶素没食子酸酯(EGCG). 在Tween 80/EGCG/H2O体系中, 随着EGCG浓度增加, Tween 80临界胶束浓度和胶束动力学半径增大; 随着Tween 80浓度增加, EGCG和Tween 80扩散系数减小, 而EGCG的紫外-可见吸收光强度和荧光强度增加. 对EGCG在Tween 80胶束中的定位也进行了讨论.

关键词: 胶束, 儿茶素没食子酸酯, 萃取, Tween 80

Abstract:

Epigallocatechin-3-gallate (EGCG) was successfully extracted from Huangshan green tea using an ion-precipitation and extraction technique. In the Tween 80/EGCG/H2O system, the critical micelle concentration of Tween 80 and the hydrodynamic radius of the Tween 80 micelles increase with increasing the EGCG concentration. As the concentration of Tween 80 increases, the intrinsic UV-Vis absorption and fluorescence intensities of EGCG increase, but the electrochemical diffusion coefficients of EGCG and Tween 80 decrease. We discuss the location of EGCG in the micelles.

Key words: Micelle, Epigallocatechin-3-gallate, Extraction, Tween 80

MSC2000: 

  • O648