Question

Antioxidant activity of different extracts of saraca asoca

Answer 1

Antioxidant potential of various extracts i.e. ethanolic, hydroalcoholic and acetone prepared by different extraction methods (Soxhlet extraction, Ultrasonication extraction and Microwave assisted extraction) of stem bark of Saraca asoca Roxb. De Wilde was studied by using DPPH (1,1, diphenyl-2 picryl hydrazyl) in-vitro model. The highest IC50 value 193.88 μg/ml were showed by hydroalcoholic (ethanol 60%) extract prepared by soxhlet extraction method. The acetone extract prepared by ultrasonication extraction method exhibited the lowest IC50 value 97.82 μg/ml. The results indicate that the antioxidant property of the extract may be due to high content of phenolic compounds.

Answer 2

Methanol extract of Saraca asoca flower extract exhibited strong antioxidant activity with DPPH (121.84%), hydroxyl (126.22%), superoxide (128.27%) and AB.TS (99.22%) assays. It can be accomplished that the methanol extracts of Saraca asoca flower is a potential source of natural antioxidants.

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