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KMID : 0881720200350030219
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Journal of Food Hygiene and Safety
2020 Volume.35 No. 3 p.219 ~ p.224
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Distribution and Toxin Gene Characteristic of Bacillus cereus Isolated from Foods in Busan
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Park So-Hyun
Gwon Wi-Gyeong
Lee In-Sook
Kim Eun-Ju
Hwang Su-Jeong
Koo Hee-Soo
Na Young-Ran
Kim Byung-Jun
Park Eun-Hee
Lee Mee-Ok
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Abstract
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The purpose of this study was to provide basic data necessary for the prevention of food poisoning and safe food management. We examined 872 food samples for B. cereus in accordance with the MFDS Food Code and investigated characteristics of their harboring toxin genes. We detected and isolated 113 strains of B. cereus from 78 food samples (8.9%), and the average detection level was 48 CFU/g. B. cereus isolates carried at least 1 toxin gene among the emetic toxins and 5 enterotoxin genes. The toxin gene profiles of B. cereus were classified into 18 different types of isolates showing genetic diversity. Among the strains, 34 (30.1%) had all 5 enterotoxin genes (Cytk-nheAentFM-bceT-hblC), accounting for the highest percentage. The entFM and nheA genes were major enterotoxin genes, while the emetic toxin gene, CER, was the least detected in B. cereus isolated from food samples.
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KEYWORD
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Bacillus cereus, Enterotoxin, Emetic toxin, Toxin gene profile
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