1995
DOI: 10.1016/s0740-0020(95)80088-3
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Potential use of microbiological reference materials for the evaluation of detection methods for Listeria monocytogenes and the effect of competitors: a collaborative study

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Cited by 20 publications
(6 citation statements)
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“…Three of our strains, which were isolated from ground pork, competed better against non-pork isolates in minced-meat mixed enrichments. In the majority of our minced-meat enrichments, L. monocytogenes, attained lower populations in enrichment broths due to the simultaneous growth of meat background microbiota, in accordance with the notion that the presence of competing microbiota hinders the ability of pathogens to fully grow in enrichment broths (in´t Veld et al, 1995). The impact of minced-meat microbiota combined with the competitive advantage of pork isolates could possibly explain the inability of strain ScottA to grow in minced-meat enrichment broths in the presence of PL26 and PL27.…”
Section: Discussionsupporting
confidence: 85%
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“…Three of our strains, which were isolated from ground pork, competed better against non-pork isolates in minced-meat mixed enrichments. In the majority of our minced-meat enrichments, L. monocytogenes, attained lower populations in enrichment broths due to the simultaneous growth of meat background microbiota, in accordance with the notion that the presence of competing microbiota hinders the ability of pathogens to fully grow in enrichment broths (in´t Veld et al, 1995). The impact of minced-meat microbiota combined with the competitive advantage of pork isolates could possibly explain the inability of strain ScottA to grow in minced-meat enrichment broths in the presence of PL26 and PL27.…”
Section: Discussionsupporting
confidence: 85%
“…The process of selective enrichment is considered biased since it relies upon the ability of a pathogen to counteract the adverse conditions induced by growth inhibiting selective agents, food-related compounds and competing food microbiota (Donnelly, 2002;Gasanov et al, 2005;in´t Veld et al, 1995). In a previous work , which also included the strains of this study, we observed preferential selection of certain L. monocytogenes strains after their co-enrichment with the ISO protocol.…”
Section: Discussionmentioning
confidence: 63%
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“…1990 ). The detection of listeria from soft cheeses ( In't Veld et al . 1995 ; Vlaemynck and Moermans 1996), especially those ripened by moulds or made from raw milk, has proved to be difficult ( Tran and Hitchins 1996; Waak et al .…”
Section: Introductionmentioning
confidence: 99%
“…A range of selective agents have been suggested for inclusion in these enrichment broths, with a view to enhancing their selectivity for Listeria spp. (Curtis and Lee 1995), but many, if not all of these have been shown to inhibit growth of the target organism (Budo-Amoako et al 1992;Johansson et al 1995;In't Veld et al 1995;Beumer et al 1996), so that extended incubation periods are necessary to allow the numbers of Listeria spp present to increase to detectable numbers. Cells which have been subjected to sublethal injury through freezing, heating, or other common food treatments, may be particularly susceptible to suppression by selective agents in broths and therefore fail to recover and/or grow, presenting as false negative results (Varabioff 1990).…”
Section: Introductionmentioning
confidence: 99%