Antibacterial activity of Moringa oleifera and Moringa stenopetala methanol and n-hexane seed extracts on bacteria implicated in water borne diseases

摘要

The anti-bacterial activity of methanol and n-hexane extracts of?Moringa oleifera?andMoringa stenopetala?seeds was conducted on 3 bacterial species (Salmonella typhii, Vibrio cholerae?and?Escherichia coli) which normally cause water borne diseases. The paper disc diffusion method was used with treatments arranged in a completely randomized design and replicated four times. The highest inhibitions were observed at dilutions of 20, 5 and 40% for?M. oleifera?and?M. stenopetala?methanol extracts on?E. coli,S. typhi?and?V. cholerae?respectively. The n-hexane extract of both?M. oleifera?and?M. stenopetala?had a higher inhibition on?S. typhii?than?V. cholerae?and?E. coli. The results of this study showed that?M. oleifera?and?M. stenopetala?had a degree of antibacterial properties especially in low doses.