Antioxidant activity of sulfated polysaccharide fractions extracted from Undaria pinnitafida in vitro

Two sulfated polysaccharide fractions (S1 and S2) were successfully isolated from seaweed Undaia pinnitafida and the chemical characteristics were determined. Antioxidant activities of the polysaccharide fractions were evaluated by assays of various antioxidants in vitro systems, including superoxid...

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Bibliographic Details
Published in:International journal of biological macromolecules 2010-03, Vol.46 (2), p.193-198
Main Authors: Hu, Tingting, Liu, Dan, Chen, Yan, Wu, Jun, Wang, Shusheng
Format: Article
Language:English
Subjects:
Antioxidant activity
Antioxidants - pharmacology
Biphenyl Compounds - pharmacology
Chelating ability
Chemical Fractionation
Free Radical Scavengers - pharmacology
Ions
Iron Chelating Agents - pharmacology
Picrates - pharmacology
Polysaccharides - chemistry
Polysaccharides - isolation & purification
Polysaccharides - pharmacology
Radical-scavenging effect
Spectrophotometry, Infrared
Sulfated polysaccharide
Sulfuric Acid Esters - chemistry
Sulfuric Acid Esters - isolation & purification
Sulfuric Acid Esters - pharmacology
Superoxides - metabolism
Undaria
Undaria - chemistry
Undaria pinnitafida
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Summary:Two sulfated polysaccharide fractions (S1 and S2) were successfully isolated from seaweed Undaia pinnitafida and the chemical characteristics were determined. Antioxidant activities of the polysaccharide fractions were evaluated by assays of various antioxidants in vitro systems, including superoxide anion, 2,2-diphenyl-1-picrylhydrazyl (DPPH), hydroxyl radical-scavenging activity and metal chelating ability. The results showed that the two sulfated polysaccharides contained rhamnose as the major neutral sugar and present high sulfate content (33.99–34.29%). Antioxidant assays suggested that the two sulfated polysaccharide fractions (S1 and S2) possessed good antioxidant properties and had stronger antioxidant abilities than de-sulfated polysaccharides (DS-1 and DS-2). Available data obtained by in vitro models suggested that the correlation between the sulfate content and antioxidant activity was positive.
ISSN:0141-8130
1879-0003
DOI:10.1016/j.ijbiomac.2009.12.004