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CLC number: O69;S571.1

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

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Cited: 5

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Citations:  Bibtex RefMan EndNote GB/T7714

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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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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.

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Daramola B@Federal Polytechnic , ado-ekiti Nigeria<daramola_bode@yahoo.co.uk>

2017-10-30 17:24:14

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2015-01-27 05:36:10

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