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Objective:In vitro antioxidant activities of three selected Indian seaweeds viz.,Halimeda tuna(H.tuna),Turbinaria conoides(T.conoides) and Gracilaria foliifera(G.foliifera) were evaluated.Methods:Total antioxidant activity,total phenolic content,and reducing power of crude methanol and diethyl ether extracts were determined.Results:Total phenolic content and total antioxidant activity were higher(1.231±0.173 mg GAE/g,1.675±0.361 mg GAE/g) in T.conoides respectively.Reducing power of crude methanol extract increased with concentrations of the extract.The Fourier transform-infra red spectrum analysis revealed the presence of polyphenolic signals.The seaweed extracts displayed moderate antioxidant activity compared to gallic acid standard.Conclusions:The seaweeds could be considered for curing diseases from oxidative deteriorations.
Objective: In vitro antioxidant activities of three selected Indian seaweeds viz., Halimeda tuna (H. tuna), Turbinaria conoides (T.conoides) and Gracilaria foliifera (G.foliifera) were were evaluated.Methods: Total antioxidant activity, total phenolic content, and reducing power of crude methanol and diethyl ether extracts were determined. Results: Total phenolic content and total antioxidant activity were higher (1.231 ± 0.173 mg GAE / g, 1.675 ± 0.361 mg GAE / g) in T.conoides respectively. Reducing power of crude methanol extract increased with concentrations of the extract. Fourier transform-infra red spectrum analysis revealed the presence of polyphenolic signals. seaweed extracts showed moderate antioxidant activity compared to gallic acid standard. Conclusions: The seaweeds could be considered for curing diseases from oxidative deteriorations.