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Appl Environ Microbiol. 1989 June; 55(6): 1645-1648

Evaluation of three newly developed direct plating media to enumerate Listeria monocytogenes in foods.

Department of Food Science and Technology, University of Georgia Agricultural Experiment Station, Griffin 30223-1797.

ABSTRACT

LiCl-phenylethanol-moxalactam Agar (LPMA), ARS Modified McBride Agar, and Modified Vogel Johnson Agar were compared with previously tested plating media in the enumeration of Listeria monocytogenes from pasteurized whole milk, chocolate ice cream mix, Brie cheese, and raw cabbage. LPMA was most suitable for analyzing Brie cheese and cabbage. Gum base-nalidixic acid-tryptone-soya medium (previously tested) was most suitable for analyzing milk and chocolate ice cream mix.