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KMID : 1161420180210090946
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Journal of Medicinal Food
2018 Volume.21 No. 9 p.946 ~ p.950
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Susceptibility Distribution to Essential Oils of Salmonella enterica Strains Involved in Animal and Public Health and Comparison of the Typhimurium and Enteritidis Serotypes
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Solarte Ana Lucia
Astorga Rafael Jesus
de Aguiar Fabiana Carolina
De Frutos Cristina
Barrero-Dominguez Belen
Huerta Belen
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Abstract
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To determine the distribution of the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of essential oils (EOs) of cinnamon (Cinnamomum zeylanicum), clove (Eugenia caryophyllata), oregano (Origanum vulgare), common thyme (Thymus vulgaris), and red thyme (Thymus zygis) against Salmonella enterica, double serial dilutions of each EO were challenged with 85 Salmonella strains belonging to 23 serotypes of animal origin. The results showed the bactericidal character of the EOs tested against S. enterica, highlighting the oregano with MIC50 and MBC50 of 3.12?×?10?4?g/mL, and MIC90 and MBC90 of 6.25?×?10?4?g/mL. When comparing the Salmonella Typhimurium and Salmonella Enteritidis serotypes susceptibility, we observed a significantly higher sensitivity of Typhimurium to clove and Enteritidis to cinnamon. In addition, Typhimurium isolates with significantly higher MIC and MBC values for all the EOs tested were found, suggesting the existence of a possible resistance profile. The results of this study provide relevant data for the potential of EOs as antibacterials, although they highlight the need to continue bacterial sensitivity distribution studies and consider the differences detected for future in vivo studies.
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KEYWORD
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antibacterial activity, distribution, essential oils, Salmonella enterica
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