Antioxidant Ability of Some Common Indian Vegetables

Abstract

Objective: The aim of this research work is to investigate antioxidant ability and analyse phytochemicals in some of the common Indian vegetables. Methodology: Different concentrations of the extracts were screened for estimating their DPPH scavenging ability by UV-spectrophotometry. Methanol was used as control while ascorbic acid was used as a standard antioxidant. IC50 and percentage inhibition were calculated. Results: Chenopodium album was found to show higher ability with IC 50 at 82.93 ± 0.17 µg/ml while maximum % inhibition of 68.74 ± 0.17% was obtained at 100 µg/ml. The R 2 values were greater than 0.9 indicating that the relationship between extract concentration and % inhibition was extremely strong. Qualitative biochemical analysis of both the extracts showed the presence of carbohydrates, reducing sugars, alkaloids, flavonoids, triterpenoids, steroids, tannin and phenolic compound. Conclusions: The in vitro study showed that Portulaca oleracea and Chenopodium album proved to be good scavengers of free radicals like DPPH.

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