FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (7): 40-42.doi: 10.7506/spkx1002-6630-200907008

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Adsorption Separation of (-)-Epigallocatechin-3-Gallate (EGCG) and Caffeine by Resin RB

WANG Rui-fang CHEN Fa-he WU Guang-bin ZHANG Ling-jing TIAN Biao   

  1. (College of Bioengineering, Jimei University, Xiamen 361021, China)
  • Received:2008-05-31 Revised:2008-06-11 Online:2009-04-01 Published:2010-12-29
  • Contact: WANG Rui-fang E-mail:wangrf@jmu.edu.cn

Abstract:

The performance of adsorption for catechins EGCG and caffeine by three resins with different surface properties were investigated in this study. The results showed that the adsorption capacity to caffeine rises with the increase of specific surface area and is little affected by the surface property. However, the adsorption capacity to catechins EGCG is significantly related to the surface property of resins. Nonpolar resin X-5 has the least adsorption capacity to catechins EGCG, while RB resin with carbonyl and methylactyl shows high adsorption capacity and strong adsorption selectivity to it, which can isolate catechins EGCG and caffeine by means of dynamic chromatography.

Key words: EGCG, caffeine, resin

CLC Number: