COMPARISON PROFILE OF DIFFERENT EXTRACTS OF Averrhoa Bilimbi L. IN ANTIOXIDANT PROPERTIES AND PHYTOCHEMICAL CONTENT

The negative effects of free radicals can be reduced by antioxidants. Antioxidants inhibit the oxidation reaction due to free radicals. Antioxidants can be found in a variety of plants, such as Bilimbi (Averrhoa Bilimbi L.). The objectives of this research were to study antioxidant activity of leaves, fruit and twigs of Bilimbi by DPPH (2,2diphenyl-1-picrylhydrazyl) and ABTS [2,2'-azino-bis (3-ethylbenzothiazoline-6sulphonic acid)] and determine its phytochemical content. Antioxidant activities, total phenolic content (TPC) and total flavonoid content (TFC) were performed by the UV-Visible spectrophotometric method. Correlation of TPC and TFC with their IC50 of DPPH and IC50 of ABTS and also a correlation of two methods were conducted by Pearson’s method. All parts extracts of Bilimbi were generally classified as a very strong antioxidant by DPPH and ABTS methods. Waste products of Bilimbi (leaves and twigs) were a potential antioxidant. The major contributors in antioxidant activities of leaves, fruit and twigs extracts of Bilimbi by DPPH and ABTS methods were phenolic compounds. DPPH and ABTS methods gave linear results in antioxidant activities of leaves and twig extracts of Bilimbi.