Current Microbiology

, Volume 33, Issue 1, pp 67-69

Production of an Emetic Toxin, Cereulide, Is Associated with a Specific Class of Bacillus cereus

  • Norio  AgataAffiliated withNagoya City Public Health Research Institute, 1-11 Hagiyamacho, Mizuho, Nagoya 467, Japan
  • , Michio  OhtaAffiliated withDepartment of Bacteriology, Nagoya University School of Medicine, 65 Tsurumaicho, Showa, Nagoya 466, Japan
  • , Masashi  MoriAffiliated withNagoya City Public Health Research Institute, 1-11 Hagiyamacho, Mizuho, Nagoya 467, Japan

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Abstract.

The emetic toxin (cereulide) of Bacillus cereus was quantified in several isolates of B. cereus and in various food sources. When the emetic toxin was produced, vomiting-type food poisoning was observed in humans. We also found that the H-1 serovar phenotype was strongly associated with the production of cereulide and that none of the isolates that hydrolyzed starch or expressed diarrheal enterotoxin activity produced cereulide.