title: A new selective medium for the isolation of Listeria monocytogenes.
abstract: A new selective medium for the isolation of Listeria monocytogenes (Lm), is described. The medium contained propolis, nalidixic acid, polymyxin B and rivanol as selective substances. The new medium (propolis-agar) was compared with two other selective media and one nonselective medium. No inhibitory effect was found on the 6 strains of Lm tested, and Lm was easily isolated from a mixture of Lm and contaminating bacteria. The selective effect was better than for the two other selective media tested.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001516:Bees; D003470:Culture Media; D004975:Ethacridine / Q000494:pharmacology; D008089:Listeria monocytogenes / Q000187:drug effects / Q000302:isolation & purification*; D009268:Nalidixic Acid / Q000494:pharmacology; D011112:Polymyxin B / Q000494:pharmacology; D014885:Waxes
chemical_list: D000900:Anti-Bacterial Agents; D003470:Culture Media; D014885:Waxes; D009268:Nalidixic Acid; D011112:Polymyxin B; D004975:Ethacridine