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Received: 2002-11-02

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Journal of Zhejiang University SCIENCE A 2003 Vol.4 No.6 P.714~718

http://doi.org/10.1631/jzus.2003.0714


A novel long-chain acyl-derivative of epigallocatechin-3-O-gallate prepared and purified from green tea polyphenols


Author(s):  CHEN Ping, TAN Yao, SUN Dong, ZHENG Xiao-ming

Affiliation(s):  Catalysis Institute, Zhejiang University, Hangzhou 310028, China; more

Corresponding email(s):   pingchen@mail.hz.zj.cn

Key Words:  Green tea polyphenols, Lipophilic tea polyphenols, Epi gallocatechin-3-O-gallate, Epigallocatechin-3-O-gallate-4'-O-hexadecanate, Isolation, High-speed countercurrent chromatography


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CHEN Ping, TAN Yao, SUN Dong, ZHENG Xiao-ming. A novel long-chain acyl-derivative of epigallocatechin-3-O-gallate prepared and purified from green tea polyphenols[J]. Journal of Zhejiang University Science A, 2003, 4(6): 714~718.

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author="CHEN Ping, TAN Yao, SUN Dong, ZHENG Xiao-ming",
journal="Journal of Zhejiang University Science A",
volume="4",
number="6",
pages="714~718",
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publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2003.0714"
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%A CHEN Ping
%A TAN Yao
%A SUN Dong
%A ZHENG Xiao-ming
%J Journal of Zhejiang University SCIENCE A
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%DOI 10.1631/jzus.2003.0714

TY - JOUR
T1 - A novel long-chain acyl-derivative of epigallocatechin-3-O-gallate prepared and purified from green tea polyphenols
A1 - CHEN Ping
A1 - TAN Yao
A1 - SUN Dong
A1 - ZHENG Xiao-ming
J0 - Journal of Zhejiang University Science A
VL - 4
IS - 6
SP - 714
EP - 718
%@ 1869-1951
Y1 - 2003
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2003.0714


Abstract: 
lipophilic tea polyphenols (LTP) were prepared by catalytic esterifica tion of green tea polyphenols (GTP) with hexadecanoyl chloride. A novel long-ch a in acyl-derivative of epigallocatechin-3-o-gallate (EGCG) was first isol ated fro m purification of LTP by high-speed countercurrent chromatography (HSCCC) using a solvent system composed of n-hexane-ethyl acetate-methanol-water (1:1:1:1, v/v). The molecular structure of the acyl-derivative, Epigallocatechin-3-O- gall ate-4'-O-hexadecanate, was elucidated by means of elemental analysis, I R, 1H-NMR and MS spectra.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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