TITLE:
Antibacterial Activity of Moringa ovalifolia and Moringa oleifera Methanol, N-Hexane and Water Seeds and Bark Extracts against Pathogens That Are Implicated in Water Borne Diseases
AUTHORS:
Dorothea H. P. Shailemo, Habauka M. Kwaambwa, Martha Kandawa-Schulz, Titus A. M. Msagati
KEYWORDS:
Antibacterial Activity, Escherichia coli, N-Hexane, Inhibition, Methanol, Moringa oleifera, Moringa ovalifolia, Bacillus cereus, Enterococcus faecalis
JOURNAL NAME:
Green and Sustainable Chemistry,
Vol.6 No.2,
May
5,
2016
ABSTRACT: Antibacterial
activity of methanol, n-hexane and water extracts of seeds and bark of Moringa
oleifera and Moringa ovalifolia was conducted. The causative agents
of common bacterial infections that are thought to cause water-borne diseases,
namely, Escherichia coli, Enterococcus faecalis, and Bacillus
cereus were chosen for the study. The paper-disc diffusion
method was used with treatments arranged in a completely randomized design and
replicated four times. The M. oleifera extracts
showed more inhibitory effect than those of M.
ovolifolia. The conventional antibiotic Ampicilin generally showed higher
inhibitory effect than the extracts of both M.
oleifera and M. ovalifolia. The
inhibitory effect varied depending on the solvent used. The n-hexane extracts
of both seeds and bark of M. ovalifolia and M. oleifera had almost the same
inhibition activities (6 ± 1 mm mean inhibition zones) on B. cereus, E. coli and E. faecalis. The n-hexane extract
generally gave lower antibacterial activities than those of the other solvents
for seeds and back. The results of the study showed that M. oleifera and M. ovalifolia had a degree of antibacterial properties against the selected test organisms
that cause water borne diseases.