INTERNATIONAL JOURNAL OF PHARMACY & LIFE SCIENCES The In Vitro antioxidant and free radical scavenging Activities of suran ( Amorphophallus campanulatus (Araceae)) tubers extracts

Total Phenolics and the antioxidative properties of Amorphophallus campanulatus were studied. The dried Powder of tubers was extracted successively with methanol, Hydroalcohol, ethanol and 70% acetone separately. After removing the solvents, the extracts were freeze-dri ed. The Amorphophallus campanulatus tubers contained relatively high levels of total Phenolics and tanni ns. The extracts were subjected to assess their pot ential antioxidant activities using systems such as diphenyl- β-picrylhydrazyl (DPPH˙), ABTS , FRAP, linoleic acid emulsion, O ₂⁻and OH ´. The superoxide anion radical-scavenging activity was found to be higher in methanolic extract in co mparison to other extracts’ at the concentration of 600 µg i n the reaction mixture. The DPPH radical and ABTS action radicalscavenging activities were well proved and related with the ferric-reducing/antioxidant capacity of th e extracts. Interestingly, among the various extracts, methanol ic extracts’ shows significantly (P < 0.05) higher hydroxyl radical- scavenging activity. In general, all extra cts exhibited good antioxidant activity (53.3‐73.1% ) against the linoleic acid emulsion system but were significantl y (P < 0.05) lower than the synthetic antioxidant, BHA (93.3%).