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Antibacterial screening of
the root, stem and leaf extracts of Terminalia albida
sc. elliot on selected pathogenic bacteria
S. M. Ayodele1*, G. Alpheus2 and O.
M. Iruaga2
1Department
of Biological Sciences, Kogi State University, P. M. B. 1008
Anyigba, Kogi State Nigeria.
2Department
of Microbiology, Delta State University, Abraka, Delta
State, Nigeria.
*Corresponding author.
E-mail:
ayodelemichael2007@yahoo.com. Tel: +2348036761286,
+2348052708131.
Accepted 8 June, 2010 |
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The ethanol extracts of the root, stem and leaves of
Terminalia albida were evaluated for their
antibacterial activities using agar diffusion method to
justify the ethno botanical uses of the plant parts by the
traditional healers in Nigeria. The ethanol extracts of the
root, stem and leaves were effective against the test
bacteria (Staphylococcus aureus, Klebsiella
pneumoniae, Pseudomonas aeruginosa,
Escherichia coli and Proteus mirabilis)
at all the concentrations used (100 l- 500 mg/ml). The root
extract at 500 mg/ml is most effective against E. coli
and K. pneumoniae, the stem extract at 500 mg/ml was
most effective against P. aeruginosa and P.
mirabilis while the leaves extract at 500 mg/ml was most
effective against P. mirabilis. The minimum
inhibitory concentrations (MIC) test of the root, stem and
leaves extracts showed that the test organisms were
inhibited at all concentrations. The root extract
showed more inhibitory effect than the stem and leaf
extracts. The results of this study validated the use of
various parts of this plant in traditional medicine in many
parts of Africa.
Key words: Terminalia albida, antibacterial
screening, root, stem, leaves. |
