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Phytochemical and
antimicrobial
activity of
Terminalia
avicennioides
extracts
against some bacteria pathogens associated with
patients suffering from
complicated respiratory tract diseases
A. Mann*, Y.
Yahaya, A. Banso and F. John
Department
of Science Laboratory Technology, the Federal Polytechnic,
P. M. B 55, Bida, Niger State. Nigeria
*Corresponding author. E-mail:
abdumann@yahoo.com. Tel. +2348036368173
Accepted
29 April 2008 |
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Ethanolic extracts of
the stem bark, root bark and leaves of Terminalia avicennioides
were assayed against Staphylococcus aureus, Escherichia
coli and Pseudomonas aeruginosa obtained from patients
suffering from complicated respiratory tract infections for their
antimicrobial activity. Analysis of variance showed that the ethanolic
extracts of the plant material exhibit a significant (P > 0.05)
antimicrobial activity against S. aureus. The various zone of
inhibitions on Escherichia coli was moderate (P < 0.05) at
different concentrations, very low antimicrobial activity was observed
against P. aeruginosa. Important bioactive agents like phenols,
steroids, glycosides, flavonoids, tannins, ellagic acids were detected
in the bark, leaves and root of T. avicennioides. Anthraquinone
was not absent in all the plant parts tested. The bioactive
constituents detected in T. avicennioides may be responsible for
the observed antimicrobial activity of the plant and hence, its
potential use as antimicrobial agent.
Key words:
Antimicrobial
activity, bacterial
pathogens,
Phytochemical, respiratory tract diseases, Terminalia avicennioides. |
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