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Quantitative Prevalence and Toxin Gene Profile of Bacillus cereus from Ready-to-Eat Vegetables in South Korea

Title
Quantitative Prevalence and Toxin Gene Profile of Bacillus cereus from Ready-to-Eat Vegetables in South Korea
Author
Hyunsook Kim
Keywords
EMETIC TOXIN; STRAINS; FOODS; IDENTIFICATION; TEMPERATURE; ENUMERATION; DIVERSITY; PRODUCTS; LETTUCE; ABILITY
Issue Date
2015-09
Publisher
MARY ANN LIEBERT
Citation
FOODBORNE PATHOGENS AND DISEASE, v. 12, NO 9, Page. 795-799
Abstract
Ready-to-eat (RTE) foods such as prepared vegetables are becoming an increasingly popular food choice. Since RTE vegetables are not commonly sterilized by heat treatment, contamination with foodborne pathogens such as Bacillus cereus (B. cereus) is a major concern. The objective of this study was to assess the quantitative prevalence and toxin gene profiles of B. cereus strains isolated from RTE vegetables. We found that 70 of the 145 (48%) tested retail vegetable salad and sprout samples were positive for B. cereus. The B. cereus isolates harbored at least one enterotoxin gene. The detection rates of nheABC, hblCDA, cytK, and entFM enterotoxin genes among all isolates were 97.1%, 100%, 81.4%, and 98.6%, respectively. No strain carried the emetic toxin genes. Only 4 strains (5.7%) from the 70 isolates were psychrotrophic and were able to grow at 7 degrees C. All of the psychrotrophic isolates possessed at least 1 enterotoxin gene.
URI
http://online.liebertpub.com/doi/abs/10.1089/fpd.2015.1977http://hdl.handle.net/20.500.11754/27371
ISSN
1535-3141; 1556-7125
DOI
10.1089/fpd.2015.1977
Appears in Collections:
COLLEGE OF HUMAN ECOLOGY[S](생활과학대학) > FOOD & NUTRITION(식품영양학과) > Articles
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