ANTIOXIDANT ACTIVITY Antioxidant Activity and Phytochemical Analysis of Leaf Extracts of Pineapple

Abstract

Traditional medicines are originated from plants that do not form the constituent of routein diet. Beside this most of the medicinal plants have not received much attention / screening. Ananas comosus is one such plant traditionally used for treatment of various ailments. The pineapple (A. comosus) is the edible member of family Bromeliaceae; Phytochemical screening of the A. Comosus leaves extract shows presence of Alkaloids, Flavonoids, Tannins, Phytosterols, Glycosides and Phenols. The present study was designed to evaluate the effect of crude extract of pineapple leaves (PAL) for antioxidant activity. The value of inhibition of 3 extracts of A. comosus on 2, 2 Diphenyl-1 picrylhydrazyl (DPPH) assays at a concentration of 99µg/mL was obtained. Result shows highest inhibition which is obtained by hydro alcoholic solution (56.40) and lowest by ethanolic extract (42.86) respectively. Ascorbic acid as positive control shows 96.5% antioxidant activity. Keywords: Bromeliaceae, Flavonoids, Memory enhancement, Antioxidant, DPPH.