Czech J. Food Sci., 2011, 29(6):654-659 | DOI: 10.17221/246/2010-CJFS

Antibiotic resistance of Enterococcus species isolated from raw foods of animal origin in South West part of Slovakia

Miroslav Kročko1, Margita Čanigová1, Viera Ducková1, Anna Artimová1, Jana Bezeková1, Jennifer Poston2
1 Department of Evaluation and Processing Animal Products, Faculty of Biotechnology and Food Sciences, Slovak Agricultural University in Nitra, Nitra, Slovak Republic
2 West Virginia University, West Virginia, USA

We determined the prevalence and antibiotic resistance of enterococci isolated from raw foods of animal origin. All samples were positive for enterococci. The lowest count of enterococci was found in pork (2.00 log CFU/cm2), while bryndza cheese contained the highest count (4.99 log CFU/g). Among the 349 Enterococcus isolates, 49% were E. faecalis, 29% E. faecium, and 13% Enterococcus spp. Tetracycline and gentamicin resistance was the most common. We found the highest tetracycline resistance levels (91%) in isolates from poultry samples. The isolates from the poultry samples also displayed multidrug resistance to all antibiotics tested. The most common vancomycin-resistant species in poultry and milk was E. faecalis. In contrast, the pork samples contained vancomycin-resistant E. faecium isolates. It is interesting to note that vancomycin resistance in the pork and poultry samples was found only in combination with either four (28%) or all five (14%) of the tested antibiotics. Our results suggest that raw products of animal origin are possible reservoirs of multi-antibiotic resistant enterococci in the food chain.

Keywords: pathogenic species; probiotic culture; fermentation; microbiological analyse; milk; meat

Published: December 31, 2011  Show citation

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Kročko M, Čanigová M, Ducková V, Artimová A, Bezeková J, Poston J. Antibiotic resistance of Enterococcus species isolated from raw foods of animal origin in South West part of Slovakia. Czech J. Food Sci. 2011;29(6):654-659. doi: 10.17221/246/2010-CJFS.
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