. The present study reports the antimicrobial potential of 15 ethanol
leaf extracts derived from commonly occurring five native medicinal tree
species belonging to different families collected from the semi- arid regions
of Kattakada, Kerala, India. The plants selected for the study were Annonasquamosa,
Thespesiapopulnea, Murrayakoenigii, Glyricidiasepium and Moringaoleifera
.Antimicrobial potential of these tree species were screened in vitro by the
agar cup plate assay method against two bacterial and fungal isolates.
Antibacterial activity was evaluated against two selected gram negative
pathogens (Escherichia coli and Pseudomonas aeroginosa) whereas antifungal
activity against two clinical fungal isolates (Candida albicans and
Aspergillusniger). Among the varying concentration of leaf extracts, higher
concentration exhibited maximum antimicrobial activity against the isolates.
Antifungal activity were found to be low when compared to antibacterial
activity. Highest antibacterial activity against P.aeriginosaand E.coli was
exhibited by the leaf extracts of Moringaoleiferaand lowest by Murrayakoenigii
. Whereas Thespesiapopulnea and Glyricidiasepium did not exhibit any antifungal
activity. The results suggest that the leaves are a rich source of valuable
primary and secondary metabolites which could be further exploited for the
isolation and identification of active principle and for the evaluation of
possible antimicrobial activity of other extracts from other parts of these
tree species. - See more at: .
No comments:
Post a Comment