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

Ganesan, P. and Kumar, Chandini S and Bhaskar, N. (2008) Antioxidant properties of methanol extract and its solvent fractions obtained from selected Indian red seaweeds. Bioresource technology, 99 (8). pp. 2717-23. ISSN 0960-8524

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Abstract

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.

Item Type: Article
Uncontrolled Keywords: Seaweeds; Antioxidant activity; Phenols; DPPH; Deoxyribose
Subjects: 500 Natural Sciences and Mathematics > 07 Life Sciences > 04 Microbiology > 01 Algae
600 Technology > 08 Food technology > 32 Antioxidants
Divisions: Meat Fish and Poultry Technology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 16 Jun 2009 07:19
Last Modified: 18 Nov 2016 10:15
URI: http://ir.cftri.com/id/eprint/1846

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