The relationship between phenolic, tannin and flavonoid content with the antioxidant activity of Pereskia bleo (Kunth)

摘要

Phenolic, flavonoid and tannin content of dried Pereskia bleo were investigated using the well established method via UV-Vis Spectrometry. Pereskia bleo has phenolic content the highest followed by flavonoid and tannin content. A study of antioxidant activities of dried sample of Pereskia bleo was carried out by using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) assay. The plant shows moderate antioxidant activity. Pereskia's leaves from ethyl acetate extract showed the highest antioxidant activity (66.32%) followed by Pereskia's leaves from methanol extract (61.76%). The total phenolic content showed a good correlation with antioxidant activity but not the total flavonoid and tannin content.