Objective: This study was undertaken to evaluate the antioxidant activity and phytochemical composition of Cynometra cauliflora.
Methods: The dry sample of young leaves, matured leaves, stems and barks from C.cauliflora were tested for phytochemical screening, total phenolics and flavonoids content. Antioxidant activity of the extract was determined by 1,1-diphenyl-2-picrylhadrazyl (DPPH) assay.
Results: Phytochemical screening showed the presence of tannins, saponins and flavonoids in all parts of C.cauliflora. Terpenoids were present in all parts except in bark. The constituent of cardiac glycosides are absent in stem but present in all other parts of the plant. Total phenolic content of young leaves was found to be 1831.47 ± 1.03 mg/g (expressed as milligram gallic acid equivalent per gram of plant extract). The total flavonoid content of young leaves was found to be 33.63 ± 0.25 mg/g (milligram catechin equivalent per gram). The radical (DPPH) scavenging activity was found to be in the following order: young leave > matured leave > stem > bark compared with ascorbic acid using as a standard.
Conclusion: These findings suggested that C.cauliflora have antioxidant potential and can be used for the development of natural and safe antioxidant compounds.
Antioxidant activity; Cynometra cauliflora; Phytochemical screening; Total phenolics