Abstract:
:Ingestion of B. cereus can result in diarrhea, if these bacteria survive gastrointestinal passage and achieve growth and enterotoxin production in the small intestine. The gastrointestinal survival of vegetative cells and spores of the diarrheal food poisoning strain B. cereus NVH 1230-88 was investigated during in vitro batch experiments simulating the stomach, duodenum and ileum using simulation media and competing intestinal microbiota. All spores and approx. 30% of the vegetative B. cereus cells survived the 2 h incubation in gastric medium with pH 4.0. Sterile intestinal medium induced germination of spores and enabled outgrowth of vegetative cells to approx. 7 log CFU/mL. The behavior of B. cereus in the intestinal environment with competing intestinal bacteria was determined by their relative concentrations. Besides the numbers of intestinal bacteria, the nutrition and composition of the intestinal community were also very important for the growth inhibition of B. cereus.
journal_name
Int J Food Microbioljournal_title
International journal of food microbiologyauthors
Ceuppens S,Van de Wiele T,Rajkovic A,Ferrer-Cabaceran T,Heyndrickx M,Boon N,Uyttendaele Mdoi
10.1016/j.ijfoodmicro.2012.02.013subject
Has Abstractpub_date
2012-04-16 00:00:00pages
241-6issue
3eissn
0168-1605issn
1879-3460pii
S0168-1605(12)00106-7journal_volume
155pub_type
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