ABSTRACT This study evaluated the antibacterial activity of medicinal plants (MPs) used to treat wounds. Methanol and ethyl acetate crude extracts of four medicinal plants were examined for antibacterial efficacy against gram-positive and gram-negative American Type Culture Collection (ATCC) strains. Plant crude extracts were produced using the maceration technique and analyzed using qualitative phytochemical tests. The antibacterial properties of plant products were evaluated using the agar disc diffusion assay. The broth microdilution method was used to determine the minimum inhibitory concentrations (MIC) and minimum bactericidal concentrations. The data were analyzed using Analysis of Variance (ANOVA). The methanol extract of Rumex nervosus had the highest yield (21%). The methanol extracts of all tested MPs tested positive for alkaloids, phenolics, and tannins. The methanol and ethyl acetate extracts exhibited a dose-dependent increase in the growth inhibition zone against all ATCC. The methanol extract of Plantago lanceolata demonstrated the highest antibacterial activity (16.67 ± 1.15) against Staphylococcus epidermidis. S. aureus and S. epidermidis recorded a relatively lower MIC (6.25 mg mL−1) from methanol extracts of P. lanceolata, while P. lanceolata and R. nervosus recorded a lower MBC (25 mg mL−1) against S. aureus.
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