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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
The in-vitro antimicrobial activity of some traditionally used medicinal plants against beta-lactam-resistant bacteria
Journal of Infection in Developing Countries, Volume 3, No. 9, Year 2009
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Description
Background: In effort to identify novel bacterial agents, this study was initiated to evaluate the antimicrobial properties of 17 crude extracts from 12 medicinal plants against beta-lactam-resistant bacteria. Methodology: The antimicrobial activities of plant extracts were evaluated against clinically proved beta-lactam-resistant bacteria (Klebsiella pneumoniae, Klebsiella oxytoca, Enterobacter cloacae, Serratia marcescens, Acinetobacter baumannii, Staphylococcus aureus and Enterococcus sp.) and reference strains of bacteria (Escherichia coli ATCC 35218, Enterobacter aerogenes ATCC 29751, E. aerogenes ATCC 13048, Pseudomonas aeruginosa ATCC 27853 and Enterococcus hirae ATCC 9790) by using disc-diffusion and agar-dilution assays. Results: The crude plant extracts demonstrated broad spectrum activity against all bacteria tested with inhibition zones in the range of 8-30 mm. The minimal inhibitory concentration (MIC) values of different plant extracts against the tested bacteria were found to range from ≤ 0.3 to ≥ 10 mg ml-1. The most active plant extracts were from Dortenia picta and Bridelia micrantha (MIC: 1.25-10 mg ml-1) on beta-lactamresistant Gram-negative bacilli and the extracts from B. micrantha, Mallotus oppositifolius, Garcinia lucida, Garcinia. kola, Campylospermum densiflorum (leaves) and C. zenkeri (root) on beta-lactam-resistant Gram-positive cocci (MIC: ≤ 0.3-5 mg ml-1). Conclusion: Of the 17 plant extracts studied, seven showed good antimicrobial activity against the tested bacteria. The stem bark of B. micrantha and the leaves of D. picta were most active towards beta-lactamase producing Gram-negative bacilli. This study shows that medicinal plants could be sources of compounds which can be used to fight against beta-lactam resistant bacteria. Copyright © 2009 Gangoue et al.
Authors & Co-Authors
Gangoué-Piéboji, Joseph
Cameroon, Yaounde
Institute of Medical Research and Medicinal Plants Studies
Belgium, Liege
Université de Liège
Eze, N.
Cameroon, Yaounde
Université de Yaoundé I
Djintchui, Arnaud Ngongang
Cameroon, Yaounde
Université de Yaoundé I
Ngameni, Bathélémy
Cameroon, Yaounde
Université de Yaoundé I
Tsabang, Nolé
Cameroon, Yaounde
Institute of Medical Research and Medicinal Plants Studies
Pegnyemb, Dieudonné Emmanuel
Cameroon, Yaounde
Université de Yaoundé I
Biyiti, Lucie F.
Cameroon, Yaounde
Institute of Medical Research and Medicinal Plants Studies
Ngassam, Pierre
Cameroon, Yaounde
Université de Yaoundé I
Koulla-Shiro, Sinata
Cameroon, Yaounde
Université de Yaoundé I
Galleni, Moreno
Belgium, Liege
Université de Liège
Statistics
Citations: 43
Authors: 10
Affiliations: 3
Identifiers
Doi:
10.3855/jidc.77