Open AccessNEW MODIFIED COTTON FIBER APPLY TO SEPARATE ECG AND EGCG FROM TEA EXTRACT
Author(s) -
Thach Ngoc Tu,
Quan Pham,
Tong Thanh Danh
Publication year - 2010
Publication title -
khoa học công nghệ
Language(s) - English
Resource type - Journals
ISSN - 1859-0128
DOI - 10.32508/stdj.v13i3.2152
Subject(s) - citric acid , chemistry , reagent , fiber , gallate , epigallocatechin gallate , polyphenol , chromatography , food science , organic chemistry , nuclear chemistry , antioxidant
Developed the new technique to modify cotton fiber by esterification with citric acid, the reaction was carried out in the tight flask and applied argon as anti-burning reagent. The optimum condition was 170oC, 5h and 3g of citric acid per 2g of cotton fiber, which result was up to 0.88 mol citric acid grafted on 1 mol glucose. The modified cotton fiber thereafter was applied to purify epigallocatechin gallate (EGCG) and epicatechin gallate (ECG) from green tea polyphenol by column chromatography with the suitable mobile phase.