Document Type : Research article
Authors
1 Graduated in Food Hygiene, Department of Food Hygiene, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran.
2 Professor, Department of Food Hygiene, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran.
Abstract
Background and purpose: Milk and its products are a suitable environment for the growth of pathogenic microorganisms, among the cold-loving pathogens Yersinia enterocolitica is one of the bacteria whose spread can threaten the health of consumers. The aim of the present study was to Prevalence of antibiotic-resistant strains of Yersinia enterocolitica isolated from traditional and industrial dairy products sold in Isfahan county.
Materials and Methods: First, 300 samples of traditional and industrial dairy products were sampled and transferred to the laboratory, and the level of contamination with Y. enterocolitica was determined by standard methods. Multiplex PCR method was used to determine the frequency of virulence genes and Disk-Diffusion method was used to evaluate antibiotic resistance.
Results: The results showed that the level of contamination with Yersinia enterocolitica was 15 samples (7.5%) out of a total of 200 traditional dairy samples, and none of the industrial samples were contaminated with Yersinia enterocolitica. According to the PCR test, the frequency of the highest and lowest carrier genes, respectively, includes ail 14 samples (4.66%), yadA 7 samples (2.33 %), inv 10 samples (3.33 %), yst 9 samples (3 %), rfbe 9 samples (3%) and virF 6 samples (2%). The results of antibiotic resistance showed that the highest resistance was related to penicillin (80%) and ampicillin (73.33%), and the lowest resistance was to imipenem (6.66%).
Conclusion: The results of this study showed that traditional dairy products were contaminated with Yersinia enterocolitica bacteria and had virulence genes, so the use of traditional dairy products should be limited and the use of antibiotics should be limited in the event of illness.
Open Access Policy: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/
Keywords
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