期刊
MOLECULES
卷 16, 期 6, 页码 5054-5061出版社
MDPI AG
DOI: 10.3390/molecules16065054
关键词
polyphenols; grape seed; mechanism pancreatic cholesterol esterase; cholesterol micelles; bile acid
资金
- Asia Research Center, Chulalongkorn University
- Chulalongkorn University
The major polyphenols in grape seed have been shown to have beneficial health effects in the prevention of dyslipidemia and cardiovascular diseases. In this present study, we investigated the cholesterol-lowering activity of three major polyphenolic compounds found in grape seed. The results showed that gallic acid, catechin, and epicatechin significantly inhibited pancreatic cholesterol esterase in a concentration-dependent manner. Moreover, they bound to taurocholic acid, taurodeoxycholic acid, and glycodeoxycholic acid at levels ranging from 38.6% to 28.2%. At the concentration of 0.2 mg/mL, gallic acid, catechin, and epicatechin reduced the formation of cholesterol micelles 27.26 +/- 2.17%, 11.88 +/- 0.75%, and 19.49 +/- 3.71%, respectively. These findings clearly demonstrate that three major polyphenolic compounds present in a particular grape seed have cholesterol-lowering activity by inhibiting pancreatic cholesterol esterase, binding of bile acids, and reducing solubility of cholesterol in micelles which may result in delayed cholesterol absorption.
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