Differences in the sensitivity to eight disinfectants of Listeria monocytogenes strains as related to their origin (short note).

The efficacy of eight commercialized disinfectants proposed by several manufacturers was evaluated using the French standard in the presence of organic matter and against Listeria monocytogenes and L. innocua strains isolated in a dairy plant, against other Listeria strains of various origin and reference strains of Staphylococcus aureus and Enterococcus faecium. Products containing quaternary ammonium plus peroxide or amine were shown to be efficient at the concentrations recommended by the manufacturer. Differences in sensitivities were noticed for one disinfectant containing chlorine.