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http://dx.doi.org/10.5851/kosfa.2015.35.4.502

Virulence Factors of Staphylococcus aureus Isolated from Korean Pork bulgogi: Enterotoxin Production and Antimicrobial Resistance  

Jung, Byeong Su (Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Lee, Yong Ju (Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Lee, Na-Kyoung (Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Kim, Hyoun Wook (Animal Products and Development division, National Institute of Animal Science, RDA)
Oh, Mi-Hwa (Animal Products and Development division, National Institute of Animal Science, RDA)
Paik, Hyun-Dong (Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Publication Information
Food Science of Animal Resources / v.35, no.4, 2015 , pp. 502-506 More about this Journal
Abstract
The aim of this study was to investigate the antimicrobial resistance profiles of and the enterotoxin gene distribution in 4 strains of Staphylococcus aureus (S10-2, S10-3, S12-2, and S13-2) isolated from 90 bulgogi samples. The S. aureus enterotoxin H gene (seh) was found in all the strains, while the S. aureus enterotoxin A gene (sea) was found only in 3 of the 4 strains. The S10-2 strain expressed a combination of enterotoxin genes - seg, seh, sei, sej, selm, and seln. The strains S10-2 and S13-2 were resistant to ampicillin and penicillin G, and all the isolated strains were resistant to tetracycline. The S10-2 strain was the only mecA-positive strain; it was also resistant to β-lactam antibiotics. Thus, genes encoding enterotoxin as well as those conferring antibiotic resistance were identified in the S. aureus strains isolated from pork bulgogi. These results represents the potential occurrence of MRSA in pork bulgogi, and the need for a monitoring system for pork bulgogi in order to prevent an outbreak of staphylococcal food poisoning.
Keywords
foodborne pathogen; Staphylococcus aureus; enterotoxin; antibiotic susceptibility;
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Times Cited By KSCI : 2  (Citation Analysis)
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