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KMID : 1007520170260010287
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Food Science and Biotechnology
2017 Volume.26 No. 1 p.287 ~ p.291
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Antimicrobial susceptibility and serotyping of Listeria monocytogenes isolated from ready-to-eat seafood and food processing environments in Korea
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Lee Da-Yeon
Ha Jae-Ho
Lee Myung-Ki
Cho Yong-Sun
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Abstract
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We examined antimicrobial susceptibility and serotypes of 33 L. monocytogenes isolates collected from ready-to-eat seafood and food processing environments. The isolated strains belonged to the 1/2b (73%), 4b (15%), and 1/2a (12%) serotypes; 11 of the obtained environmental swab samples belonged to the 1/2b serogroup. Antimicrobial resistance to benzyl penicillin (100%), clindamycin (100%), oxacillin (100%), ampicillin (97%), and tetracycline (18%) was detected, and 27/33 isolates (82%) showed resistance to four antibiotics and 6/33 (18%) were resistant to five. Total typing by automated repetitive sequence-based PCR revealed that the 33 isolates grouped into four distinct clusters with significantly correlated serotypes. These findings provide important information about the safety of ready-to-eat seafood and suggest that control measures should be adopted in order to mitigate the risk to humans posed by L. monocytogenes contaminated seafood.
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KEYWORD
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Listeria monocytogenes, seafoods, characterization, antimicrobial susceptibility, rep-PCR
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