Antioxidant properties of methanol extract and its solvent fractions obtained from selected Indian red seaweeds

被引：263

作者：

Ganesan, P. ^{[1
]}

Kumar, Chandini S. ^{[1
]}

Bhaskar, N. ^{[1
]}

机构：

[1] Cent Food Technol Res Inst, Dept Meat Fish & Poultry Technol, Mysore 570020, Karnataka, India

来源：

BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 08期

关键词：

seaweeds; antioxidant activity; phenols; DPPH; deoxyribose;

D O I：

10.1016/j.biortech.2007.07.005

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In vitro antioxidant activities of three selected Indian red seaweeds - viz., Euchema kappaphycus, Gracilaria edulis and Acanthophora spicifera were evaluated. Total phenolic content and reducing power of crude methanol extract were determined. The antioxidant activities of total methanol extract and five different solvent fractions (viz., petroleum ether (PE), ethyl acetate (EA), dichloromethane (DCM), butanol (BuOH) and aqueous) were also evaluated. EA fraction of A. spicifera exhibited higher total antioxidant activity (32.01 mg ascorbic acid equivalent/g extract) among all the fractions. Higher phenolic content (16.26 mg gallic acid equivalent/g extract) was noticed in PE fraction of G. edulis. Reducing power of crude methanol extract increased with increasing concentration of the extract. Reducing power and hydroxyl radical scavenging activity of E. kappaphycus were higher compared to standard antioxidant (alpha-tocopherol). The total phenol content of all the seaweeds was significantly different (P < 0.05). In vitro antioxidant activities of methanol extracts of all the three seaweeds exhibited dose dependency; and increased with increasing concentration of the extract. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2717 / 2723

页数：7

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