title: Evaluation of the ability of primary selective enrichment to resuscitate heat-injured and freeze-injured Listeria monocytogenes cells.
abstract: Resuscitation rates of injured Listeria monocytogenes on conventional selective Listeria enrichment broth and nonselective Trypticase soy broth containing 0.6% yeast extract were compared. Cells were heated to 60 degrees C for 5 min or frozen at -20 degrees C for 7 days. Inoculation of Trypticase soy broth-yeast extract with the stressed cells resulted in growth that was superior to that in Listeria enrichment broth. Injured cells were fully recovered at 6 to 8 h.
authors.affiliation: Prince Edward Island Food Technology Centre, Charlottetown, Canada.
authors.forename: E
authors.initials: E
authors.lastname: Budu-Amoako
authors.forename: S
authors.initials: S
authors.lastname: Toora
authors.forename: R F
authors.initials: RF
authors.lastname: Ablett
authors.forename: J
authors.initials: J
authors.lastname: Smith
mesh_terms: D002364:Caseins / Q000494:pharmacology; D003080:Cold Temperature / Q000009:adverse effects; D003470:Culture Media / Q000494:pharmacology; D005615:Freezing; D006358:Hot Temperature / Q000009:adverse effects; D008089:Listeria monocytogenes / Q000187:drug effects / Q000254:growth & development*; D011492:Protein Hydrolysates / Q000494:pharmacology
chemical_list: D002364:Caseins; D003470:Culture Media; D011492:Protein Hydrolysates; C026375:trypticase-soy broth