A proposed nonpathogenic biological indicator for thermal inactivation of Listeria monocytogenes

Listeria innocua M1 was developed as a thermal processing indicator organism for L. monocytogenes by selection of a rifampin- and streptomycin-resistant mutant. Z(D) values were 5.6 and 5.8 degrees C, and D(68 degrees C) values were 3.8 and 4.9 s for L. monocytogenes and L. innocua, respectively, in...

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Veröffentlicht in:	Applied and Environmental Microbiology 1993-04, Vol.59 (4), p.1247-1250
Hauptverfasser:	Fairchild, T.M. (North Carolina State University, Raleigh, NC), Foegeding, P.M
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Bacteria Bacteriology Biological and medical sciences Culture Media Drug Resistance, Microbial - genetics ESPECE ESPECIES Female Food contamination & poisoning Food industries Food Microbiology Food Preservation Fundamental and applied biological sciences. Psychology General aspects Hot Temperature LAIT ECREME LECHE DESNATADA LISTERIA Listeria - genetics Listeria - pathogenicity Listeria - physiology Listeria innocua LISTERIA MONOCYTOGENES Listeria monocytogenes - pathogenicity Listeria monocytogenes - physiology Methods of analysis, processing and quality control, regulation, standards Mice Milk - microbiology Mutation ORGANISME INDICATEUR ORGANISMOS INDICADORES Plasmids TRAITEMENT THERMIQUE TRATAMIENTO TERMICO
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Beschreibung
Zusammenfassung:	Listeria innocua M1 was developed as a thermal processing indicator organism for L. monocytogenes by selection of a rifampin- and streptomycin-resistant mutant. Z(D) values were 5.6 and 5.8 degrees C, and D(68 degrees C) values were 3.8 and 4.9 s for L. monocytogenes and L. innocua, respectively, in skim milk. The advantages of easy selection, similar heat resistance, and nonpathogenicity make L. innocua M1 appropriate for challenge studies designed to evaluate process lethality with respect to L. monocytogenes
ISSN:	0099-2240 1098-5336
DOI:	10.1128/AEM.59.4.1247-1250.1993