Differences in survival among 13 Listeria monocytogenes strains in a dynamic model of the stomach and small intestine.
Thirteen Listeria monocytogenes strains were compared for the ability to survive in a dynamic gastrointestinal model. Strains displayed various degrees of susceptibility to gastric acidity; however, strain-to-strain variations became evident mainly after 90 min of exposure (pH 2.0). Cell levels transferred to the intestine depended on initial populations, while reductions during intestinal exposure were relatively small for all strains.
Barmpalia-Davis
Ioanna M
IM
Center for Meat Safety & Quality and Food Safety Cluster, Department of Animal Sciences, Colorado State University, Fort Collins, CO 80523, USA.
Geornaras
Ifigenia
I
Kendall
Patricia A
PA
Sofos
John N
JN
D015169:Colony Count, Microbial; D005744:Gastric Acid; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007421:Intestine, Small / Q000382:microbiology*; D008089:Listeria monocytogenes / Q000254:growth & development*; D050296:Microbial Viability; D008954:Models, Biological; D013270:Stomach / Q000382:microbiology*; D013997:Time Factors