Advanced

Influence of amphiphilic structures on the stability of polyphenols with different hydrophobicity

Qinlu, Lin; Jing, Wang; Dan, Qin and Bergenståhl, Björn LU (2007) In Science in China. Series B: Chemistry 50(1). p.121-126
Abstract
Autooxidation of five polyphenols representing range of different hydrophobicities (catechin gallate (CG), (-) catechin((-)C), epicatechin (EC), epigallocatechin gallate (EGCG) and epigallocatechin (EGC)) in three different aqueous solutions: molecular solution, micellar solution (Tween-20) and liposomal dispersion (soybean lecithin) was monitored by HPLC. The rate of oxidation of the five polyphenols was higher at pH 4.5 than at pH 3.5. Compared with the control, addition of Tween-20 (micellar structure) and lecithin (liposomal structure) significantly decreased the degradation of polyphenols. In the presence of lecithin the autooxidation of all the five polyphenols was slower than in the presence of Tween-20. The effective protection of... (More)
Autooxidation of five polyphenols representing range of different hydrophobicities (catechin gallate (CG), (-) catechin((-)C), epicatechin (EC), epigallocatechin gallate (EGCG) and epigallocatechin (EGC)) in three different aqueous solutions: molecular solution, micellar solution (Tween-20) and liposomal dispersion (soybean lecithin) was monitored by HPLC. The rate of oxidation of the five polyphenols was higher at pH 4.5 than at pH 3.5. Compared with the control, addition of Tween-20 (micellar structure) and lecithin (liposomal structure) significantly decreased the degradation of polyphenols. In the presence of lecithin the autooxidation of all the five polyphenols was slower than in the presence of Tween-20. The effective protection of the colloidal structures was compared with the hydrophobicity of the polyphenols estimated from the partitioning between octanol and water. The protection from oxidation in the presence of the colloidal structures (micellar or liposomal) increased with increasing partitioning of a polyphenol towards the hydrophobic environment. The protecting effect of the colloidal structures was more effective at pH 4.5 than at pH 3.5. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
effective, K value, polyphenols, amphiphilic structures, autooxidation, protection
in
Science in China. Series B: Chemistry
volume
50
issue
1
pages
121 - 126
publisher
Science China Press
external identifiers
  • wos:000245148000018
  • scopus:34547156165
ISSN
1006-9291
DOI
10.1007/s11426-007-0009-9
language
English
LU publication?
yes
id
daa84738-bf04-4dc7-939b-0015f52b29f8 (old id 669528)
date added to LUP
2007-12-12 14:47:55
date last changed
2017-01-01 07:04:24
@article{daa84738-bf04-4dc7-939b-0015f52b29f8,
  abstract     = {Autooxidation of five polyphenols representing range of different hydrophobicities (catechin gallate (CG), (-) catechin((-)C), epicatechin (EC), epigallocatechin gallate (EGCG) and epigallocatechin (EGC)) in three different aqueous solutions: molecular solution, micellar solution (Tween-20) and liposomal dispersion (soybean lecithin) was monitored by HPLC. The rate of oxidation of the five polyphenols was higher at pH 4.5 than at pH 3.5. Compared with the control, addition of Tween-20 (micellar structure) and lecithin (liposomal structure) significantly decreased the degradation of polyphenols. In the presence of lecithin the autooxidation of all the five polyphenols was slower than in the presence of Tween-20. The effective protection of the colloidal structures was compared with the hydrophobicity of the polyphenols estimated from the partitioning between octanol and water. The protection from oxidation in the presence of the colloidal structures (micellar or liposomal) increased with increasing partitioning of a polyphenol towards the hydrophobic environment. The protecting effect of the colloidal structures was more effective at pH 4.5 than at pH 3.5.},
  author       = {Qinlu, Lin and Jing, Wang and Dan, Qin and Bergenståhl, Björn},
  issn         = {1006-9291},
  keyword      = {effective,K value,polyphenols,amphiphilic structures,autooxidation,protection},
  language     = {eng},
  number       = {1},
  pages        = {121--126},
  publisher    = {Science China Press},
  series       = {Science in China. Series B: Chemistry},
  title        = {Influence of amphiphilic structures on the stability of polyphenols with different hydrophobicity},
  url          = {http://dx.doi.org/10.1007/s11426-007-0009-9},
  volume       = {50},
  year         = {2007},
}