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  • Title: Enterotoxigenic profiling of emetic toxin- and enterotoxin-producing Bacillus cereus, Isolated from food, environmental, and clinical samples by multiplex PCR.
    Author: Forghani F, Kim JB, Oh DH.
    Journal: J Food Sci; 2014 Nov; 79(11):M2288-93. PubMed ID: 25311736.
    Abstract:
    Bacillus cereus comprises the largest group of endospore-forming bacteria and can cause emetic and diarrheal food poisoning. A total of 496 B. cereus strains isolated from various sources (food, environmental, clinical) were assessed by a multiplex PCR for the presence of enterotoxin genes. The detection rate of nheA, entFM, hblC, and cytK enterotoxin genes among all B. cereus strains was 92.33%, 77.21%, 59.47%, and 47.58%, respectively. Enterotoxigenic profiles were determined in emetic toxin- (8 patterns) and enterotoxin-producing strains (12 patterns). The results provide important information on toxin prevalence and toxigenic profiles of B. cereus from various sources. Our findings revealed that B. cereus must be considered a serious health hazard and Bacillus thuringiensis should be considered of a greater potential concern to food safety among all B. cereus group members. Also, there is need for intensive and continuous monitoring of products embracing both emetic toxin and enterotoxin genes.
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