Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2751

Full Length Research Paper

In vitro antibacterial activities of crude extracts of Nauclea latifolia and Daniella oliveri

El-Mahmood, A. M* Doughari, J. H. and Chanji, F. J.
Department of Microbiology, School of Pure and Applied Sciences, Federal University of Technology, P. M. B 2076 Yola 640002, Nigeria.
Email: [email protected]

  •  Accepted: 18 February 2008
  •  Published: 31 March 2008



The comparative studies of extracts of leaves, barks and roots of Nauclea latifolia and Daniella oliveri with respect to their phytochemical and antibacterial properties was carried out. Preliminary screening for phytochemical components showed that both plants had similar constituents, namely tannins, alkaloids and glycosides, but variable proportions of saponins. The antibacterial screening of the water and ethanolic extracts of the various plant materials were carried out against pathogenic bacteria includingPseudomonas aeruginosa, Klebsiealla pneumonia, Escherichia coli, Staphylococcus aureus and Shigella dysenteriae. Ethanolic extracts were more potent than aqueous extracts and activity were concentration dependent. The Gram positive bacteria were more sensitive to the ethanolic extracts of both plants.


Key words: Nauclea latifolia, Daniella oliveri, phytochemical, antibacterial properties, gram positive bacteria.