ANTIOXIDANT ACTIVITY OF FRUITS AND LEAVES OF Lagerstroemia floribunda Jack (Kedah Bungor)

Abstract

The purpose of this research project was to study the antioxidant activity of Lagerstroemia floribunda fruits and leaves. DPPH assay and FRAP assay were carried out to determine the antioxidant activity of the plant. In DPPH assay, the maximum scavenging activity of the leaves extract was found to be 92.44 % with the concentration of 80 µg/ml and the maximum scavenging activity of the fruits extract was found to be 64.72 % with the concentration of 100 µg/ml whereas in the FRAP assay FRAP (Ferric Reducing Ability of Plasma) the maximum absorbance value for leaves and fruits extract were 0.944 and 0.461 respectively at the concentration of 200 µg/ml. From this study, it can be concluded that the methanolic extract of Lagerstroemia floribunda leaves possess excellent antioxidant activity while the fruits extract of the Lagerstroemia floribunda possess mild antioxidant activity.