A COLLABORATIVE STUDY FOR DIRECT ENUMERATION OF LOW LEVELS OF LISTERIA MONOCYTOGENES FROM VARIOUS FOODS

Autor:	D.W. Warburton, E.F. Daley, Jeffrey M. Farber
Rok vydání:	1997
Předmět:	food.ingredient biology biology.organism_classification medicine.disease_cause Microbiology Shrimp food Listeria monocytogenes Direct plating Ice cream Listeria Enumeration medicine Agar Food science
Zdroj:	Journal of Rapid Methods and Automation in Microbiology. 5:193-203
ISSN:	1745-4581 1060-3999
Popis:	A direct plating method for the enumeration of low levels of foodborne Listeria monocytogenes was evaluated in a collaborative study involving 18 laboratories across Canada. Shrimp, coleslaw, ice cream and wieners were inoculated with low levels (5 × 102 and 103/g) of L. monocytogenes and shipped to participants. Foods were diluted and then plated onto either lithium chloride phenylethyl and moxa-lactam agar (LPM), Oxford agar (OXA), modified Oxford agar (MOX) or Palcam agar (PAL). Recovery was good for all foods, except coleslaw. Of the four plating media tested, all were more or less equivalent in their ability to recover colonies for enumeration, except that more colonies were enumerated on LPM than on PAL agar. Recovery of L. monocytogenes ranged from
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::466166d97d7183f3f85c31f44ac05daa https://doi.org/10.1111/j.1745-4581.1997.tb00162.x Zobrazit plný text záznamu Plný text