Abstract
Garcinia forbesii is a wild type of plant that have been long used traditionally with broad utilities in several fields like medicines, cosmetics, food and neutraceutics. Increasing awareness towards the use of phytochemicals and other plant derives products worldwide has broaden the study of bioactivities from several industrial sectors. Therefore, the present study aims to screen the antioxidant properties of fruits and leaves of Garcinia forbesii by extraction using various types of organic solvents which are methanol, ethyl acetate, and hexane. The highest yield of crude extract is both from methanol extracts of fruits and leaves which are 9.26 ± 0.34 g and 7.04 ±0.21 g, respectively. Antioxidant activities of the leave extracts of G. forbesii in reducing power, FRAP (ferric reducing antioxidant power) and DPPH (2,2-diphenyl-1-picrylhydrazyl) followed the same order of methanolic > ethyl acetate > hexanic. Meanwhile, extract hexane, methanol, and ethyl acetate of the fruits of G. forbesii showed IC50 values at 1.05%, 3.35% and 4.44% while for leaves are at 1.19%, 2.4% and 8.94% respectively. Methanol is therefore a better solvent to extract most of the antioxidant components from G. forbesii leaves.
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