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Original Article

Antibacterial activity of leaf extract of Chromolaena odorata and the effect of its combination with some conventional antibiotics on Pseudomonas aeruginosa isolated from wounds

P. Odinakachukwu Omeke, J. Okechukwu Obi, N. A. Ibuchukwu Orabueze, Anthony Chibuogwu Ike.

Cited by 12 Articles

This study was carried out to investigate the in vitro antimicrobial properties of crude methanolic extract of Chromolaena odorata and its interactions with some standard antibiotics (Ofloxacin, Ciprofloxacin and Gentamicin) on Pseudomonas aeruginosa isolated from wound samples. P. aeruginosa was isolated from wound samples from hospital patients in Enugu State, Nigeria using standard bacteriological methods. Methanolic extraction of C. odorata was carried out using Soxhlet extractor. The antimicrobial activity and in vitro interactions were evaluated using a combination of agar well diffusion and broth dilution techniques. The findings of this study showed that all the P. aeruginosa isolates were susceptible to the C. odorata methanolic crude extract at high concentrations. There were synergistic effects between the methanolic crude extract and the standard antibiotics compared to the potency observed when the methanolic crude extract was tested separately. Our findings give credence to the folkloric use of C. odorata for the treatment of wounds, especially P. aeruginosa infected wounds. There could be beneficial clinical application of the co-administration of standard antibiotics and the crude extract of C. odorata in the treatment of wound infections caused P. aeruginosa.

Key words: Pseudomonas aeruginosa; Chromolaena odorata, crude extracts; standard antibiotics; herb-drug combination; antibacterial activity.

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