Toxin Genes Profiles and Toxin Production Ability of Bacillus cereus Isolated from Clinical and Food Samples
: Bacillus cereus can cause diarrheal and emetic type of food poisoning but little study has been done on the main toxins of food poisoning caused by B. cereus in Korea. The objective of this study is to characterize the toxin gene profiles and toxin‐producing ability of 120 B. cereus isolates from...
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Published in | Journal of food science Vol. 76; no. 1; pp. T25 - T29 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Malden, USA
Blackwell Publishing Inc
01.01.2011
Wiley Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | : Bacillus cereus can cause diarrheal and emetic type of food poisoning but little study has been done on the main toxins of food poisoning caused by B. cereus in Korea. The objective of this study is to characterize the toxin gene profiles and toxin‐producing ability of 120 B. cereus isolates from clinical and food samples in Korea. The detection rate of nheABC, hblCDA, entFM, and cytK enterotoxin gene among all B. cereus strains was 94.2, 90.0, 65.8, and 52.5%, respectively. The ces gene encoding emetic toxin was not detected in all strains. Bacillus cereus strains carried at least 1 of the 8 enterotoxin genes were classified into 12 groups according to the presence or absence of 8 virulence genes. The 3 major patterns, I (nheABC, hblCDA, entFM, and cytK gene), II (nheABC, hblCDA and entFM gene), and VI (nheABC and hblCDA gene), accounted for 79.2% of all strains (95 out of 120 B. cereus isolates). Non‐hemolytic enterotoxin (NHE) and hemolysin BL (HBL) enterotoxins were produced by 107 and 100 strains, respectively. Our finding revealed that NHE and HBL enterotoxins encoded by nhe and hbl genes were the major toxins among B. cereus tested in this study and enterotoxic type of B. cereus was predominant in Korea. |
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Bibliography: | ArticleID:JFDS1958 ark:/67375/WNG-PRQRZ7TP-9 istex:449BE828A4000D0F2944FF2E51599D19EF60E282 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0022-1147 1750-3841 |
DOI: | 10.1111/j.1750-3841.2010.01958.x |