Özet:

The antibacterial activities of herbal oils and their derivatives have been studied for several years; however, more studies are needed to develop alternative strategies to destroy pathogenic Microorganisms due to increasing concerns about the development of antimicrobial resistance amongst them. In this study, our aim was to investigate the minimal inhibitory concentrations (MIC) of 3 different commercially available herbal oils on bacteria strains). Three commercially available herbal oils, including black cumin, castor, apricot oil etc. were used to determine the antibacterial activities of bacteria (standard ATCC strains). Escherichia coli from Gram-negative bacteria, Acinetobacter baumannii, Pseudomonas aeuriginosa from non-fermentative bacteria, and Staphylococcus aureus from Gram-positive bacteria were selected. The effective MIC values of herbal oils were detected by using the resazurin microtiter assay plate (REMA) technique. All herbal oils were effective on standard bacteria strains in different concentrations. The effective concentration ranges of herbal oils on each bacteria were as follows; 125-500 μg/ ml for Pseudomonas aeruginosa (ATCC 27853), 250 μg/ ml for Acinetobacter baumannii (ATCC 49139), 250 μg/ml for Staphylococcus aureus (ATCC 29213), 250 μg/ml for Escherichia coli (ATCC 25923). In conclusion, the antimicrobial capacities of some herbal oils that provide alternative solutions to pathogen microorganisms inhibition, which are made more difficult due to widespread resistance to antimicrobial agents, were evaluated in this study. We believe that this study will contribute to other related studies on the identification of herbal oil antimicrobial mechanisms of action.

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