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Antimicrobial potential of Mentha piperita oil in liquid and vapour phase against different bacterial strains (Escherichia coli αDH5, Escherichia coli ATCC 25922, Pseudomonas aeruginosa, Pseudomonas fluorescens, Bacillus subtilis and Staphylococcus aureus), fungal strains (Penicillium digitatum, Aspergillus flavus, Aspergillus niger, Mucor spp, and Fusarium oxysporum) and yeasts (Candida albicans and Sacchromyces cerevisiae) was determined by agar dilution method, well diffusion method and disc volatilization method, respectively. Minimum inhibitory concentration (MIC) and Minimum bactericidal and fungicidal concentration (MBC/MFC) of M.ápiperita oil varied from 1.13 to 2.25ámg/ml and 2.25 to 9ámg/ml for bacterial strains, 1.13 to 2.25ámg/ml and 2.25 to 4.5ámg/ml for fungal strains and 1.13ámg/ml and 2.25ámg/ml for yeasts, respectively. Bacterial inhibition zone due to M.ápiperita oil (40 μl/well …