Antibacterial Potential and Antioxidant Activity of Polyphenols of Sesbania grandiflora

摘要

The antibacterial and antioxidant activity of Sesbanial grandiflora used in traditional pharmacopeia in Burkina Faso and elsewhere was evaluated. Aqueous, methanolic and hydro-acetone extractions were carried out on the leaves, stems, and granules, pods of fruit and roots of the plant. The phytochimic groups were identified by the tests of characterization, then quantified by the tests of proportioning of total phenolics, flavonoides and tanins. Specific compounds to these phytochimic groups were also identified by the analysis in Thin layer chromatography among which the gallic acid, the caffeic acid, Kaempferol, Quercetin, Rutin. An important antioxidant activity of the same extracts was evaluated by the test of reduction of the stable radical, the 2,2-diphényl-1-picrylhydrazyl (DPPH*) and the test of reduction of iron (FRAP). This activity is related to phenolic compounds contained in the extracts. Extracts also expressed a good antibacterial activity.