Abstract
In the present study the antioxidant potential of three seaweeds Gracileria corticata (red algae), Ulva lactuca (green algae) and Sargassum ilicifolum (brown algae) were reported. SDS-PAGE analysis reveals that total of 23 different protein bands were observed of this 16, 14 and 17 bands in U. lactuca, S. ilicifolium and G. Corticata respectively. The chloroform, acetone and methanolic extracts of three algae showed the concentration dependent DPPH, FRAP, reducing power, H2O2 radical scavenging and metal chelating activities. The methanolic extracts of G. corticata have high levels of antioxidants with high DPPH, FRAP, reducing power activities and S. ilicifolum have high H2O2 radical scavenging, and metal chelating activities.G. corticata showed IC50 value for 902.09µg/ml for DPPH activity, 2274µg/ml for FRAP activity, 1082.11µg/ml for H2O2 radical scavenging. Among the three solvents tested, Methanol was found to be the most suitable solvent for the extraction of compounds.
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