Antioxidant and antibacterial activities of Piliostigma reticulatum (DC.) Hochst extracts

Abstract

The methanol and aqueous extracts of Piliostigma reticulatum barks were investigated for its antioxidant and antibacterial activities. The antioxidant test using 1,1-diphenyl-2-picrylhydrazyl (DPPH) method demonstrated important radical scavenging activity for the methanol extract with IC₅₀ = 0,37 ± 0,04 μgmL^-1. The 2 extracts were then examined for antibacterial activity by using the broth micro dilution method. The extracts possessed the antibacterial effect against the almost germs tested; the aqueous extract exhibited a better activity than methanol extract. These results indicate that methanol and aqueous extracts of P. reticulatum could be used as a source of antioxidant and antibacterial ingredients in the food industry.

Keywords: Piliostigma reticulatum, Ceasalpiniaceae, bark extracts, antioxidant, antibacterial

African Journal of Biotechnology Vol. 9(33), pp. 5407-5411, 16 August, 2010