Abstract
The objective of this study is to investigate the prevalence and determine the antimicrobial susceptibility pattern of Yersinia species in beef meat and chicken meat samples in different seasons. In this study 379 pieces of beef and chicken meats were examined for the presence of Yersinia species between April 2007 and March 2008. 25 g of homogenized food samples was pre-enriched in PBS then it was cultured on cefsulodin-irgasan-novobiocin (CIN) agar. Susceptibility testing of bacterial strains was performed at 28ËšC by the agar diffusion method. Yersinia spp. was isolated from 60 of 379 (15.8%) beef meat and chicken meat samples. Y. entrocolitica was found in 48 of 60 (80%) positive samples. The rate of other 3 Yersinia spp, Y. ferederiksenii, Y. intermedia, Y. kristensenii, were 7(11%), 4(6%) and1 (0.01%) out of 60 isolates, respectively. 98% of isolates were susceptible to choloramphenicol and gentamicin. The most antibiotic resistance belongs to cephalothine (98%). Our results showed that isolation ratio of Y. enterocolitica and the other species is higher in cold climates. The majority of isolates were resistant to cephalothine. The most active pharmacologic agents were chloramphenicol, gentamicin and trimetoprim. Key words: Yersinia enterocolitica, antimicrobial susceptibility, beef meat, chicken.
Highlights
Yersinia enterocolitica, a Gram-negative, urease positive and facultative anaerobic species, is highly heterogeneous microorganism and it can be divided into several bioserotypes and serotypes (Bottone, 1997; RobinsBrowne, 1997)
This microorganism can grow to large numbers at refrigeration temperatures, so meat, chicken, milk, cheese contaminated with that organism could become a significant health risk for consumers (Black and Jackson, 1978; Stern and Pierson, 1979; Soltan-Dallal et al, 2004; Hudson et al, 2008)
Out of 375 pieces including beef meat and chicken meat samples, 16% (n=60) Yersinia species were isolated (Table 1). 70% (n=42) of isolates were achieved from chicken meat and 30% (n=18) from beef meat
Summary
A Gram-negative, urease positive and facultative anaerobic species, is highly heterogeneous microorganism and it can be divided into several bioserotypes and serotypes (Bottone, 1997; RobinsBrowne, 1997). Y. enterocolitica is known as a psychotropic waterborne and foodborne enteropathogen This microorganism can grow to large numbers at refrigeration temperatures, so meat, chicken, milk, cheese contaminated with that organism could become a significant health risk for consumers (Black and Jackson, 1978; Stern and Pierson, 1979; Soltan-Dallal et al, 2004; Hudson et al, 2008). This microorganism is primarily a gastrointestinal tract pathogen with a strong propensity for extra intestinal spread under defined host conditions (Soltan-Dallal and Moezardalan, 2004a). It causes a broad range of diseases from acute bowel disease to
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
