Polyphenols from longan seeds and their radical-scavenging activity

被引：104

作者：

Zheng, Gongming ^{[1
,2
]}

Xu, Liangxiong ^{[1
]}

Wu, Ping ^{[1
]}

Xie, Haihui ^{[1
]}

Jiang, Yueming ^{[1
]}

Chen, Feng ^{[3
]}

Wei, Xiaoyi ^{[1
]}

机构：

[1] Chinese Acad Sci, S China Bot Garden, Key Lab Plant Resources Conservat & Sustainable U, Guangzhou 510650, Guangdong, Peoples R China

[2] Maoming Coll, Fac Chem & Life Sci, Maoming 525000, Peoples R China

[3] Clemson Univ, Dept Food Sci & Human Nutr, Clemson, SC 29634 USA

来源：

FOOD CHEMISTRY | 2009年 / 116卷 / 02期

关键词：

Longan seeds; Longan; Dimocarpus longan; Polyphenol; Antioxidant activity; IDENTIFICATION;

D O I：

10.1016/j.foodchem.2009.02.059

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Five previously uncharacterised polyphenols, ethyl gallate (2) 1-beta-O-galloyl-D-glucopyranose (3), methyl brevifolin carboxylate (4), grevifolin (5) and 4-O-alpha-L-rhamnopyranosyl-ellagic acid (8), and three previously identified polyphenols, gallic acid (1), corilagin (6) and ellagic acid (7), were isolated from longan seed. Their structure were identified by spectrscopic and chemical methods with SC50 values of 0.80-5.91 mu g/ml and towards superoxide radicals with SC50 values of 1.04-7.03 mu g/ml. The radical-scavenging activity of the newly characterised polyphenols was comparable to that of gallic acid, corilagin and ellagic acid. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：433 / 436

页数：4

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