African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5211

Full Length Research Paper

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

Atieno Walter1*, Wagai Samuel1, Arama Peter1 and Ogur Joseph2
  1Department of Botany and Horticulture, Maseno University, Kenya. 2Department of Chemistry, Maseno University, Kenya.
Email: [email protected]

  •  Accepted: 11 November 2010
  •  Published: 18 January 2011



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.


Key words: Moringa oleiferaMoringa stenopetala, methanol and n-hexane extracts, inhibition, Salmonella typhii, Vibrio choleraEscherichia coli, Kenya.