In this study a comparative antioxidant activity of the leaf extracts of P. reticulatum and P. thonningii have been evaluated using the DPPH free radical scavenging assay. The butanol fraction of P. reticulatum exhibited the highest activity (EC50 = 10.27 ± 0.02 μ g mL-1), while crude extract of P. thoninngii had the least activity (EC50 = 50.94 ± 0.27 μ g mL-1). These results suggested strong antioxidant activity potentials of the plants but less than ascorbic acid.
PDF References Citation
How to cite this article
M.A. Aderogba, E.K. Okoh, T.A. Adelanwa and E.M. Obuotor, 2004. Antioxidant Properties of the Nigerian Piliostigma Species. Journal of Biological Sciences, 4: 501-503.
- Taniguchi, M., A. Chapya, I. Kubo and K. Nakanishi, 1978. Screening of East African plants for antimicrobial activity. I. Chem. Pharm. Bull., 26: 2910-2913.
- Malcom, S.A. and E.A. Sofowora, 1969. Antimicrobial activity of selected ngerian folk remedies and their constituents plants. Lloydia, 32: 512-517.
- Ibewuike, J.C., A.O. Ogundaini, F.O. Ogungbamila, G.J. Martins, L. Bohlin and M. Pais, 1996. Piliostigmin, a 2- phenoxychromone and C-methyl flavonols from Piliostigma thonningii. Phytochemistry, 43: 687-690.
- Thabrew, M.I., R.D. Hughes and I.G. McFarlane, 1998. Antioxidant activity of Osbeckia aspera. Phytother. Res., 12: 288-290.