Listeria monocytogenes practices

Listeria monocytogenes is another major concern to the food industry, due to its inherent resistance to several preservation practices and the high mortality rate of listeriosis in susceptible populations. Of particular concern is its ability to grow at refrigeration temperatures and on dry surfaces, and to tolerate acidic conditions (Barker and Park, 2001). 

Finally possible contamination by Listeria monocytogenes of ham or crude meat was taken in consideration. Experiments made with ham contaminated artificially with varions qnantity of these bacteria had shown that the salt treatment reduces its presence and also some chemical treatment can limit the development of these bacteria. The experiments therefore showed that the ham is practically safe as regard a possible contamination from this bacterium which is common in pig skin. 

Steinmueller C, Roesler J, Grottrup, Franke G, Wagner H, Lohmann-Matthes M-L (1993) Polysaccharides isolated from plant cell cultures of Echinacea purpurea enhance the resistance of immunosuppressed mice against systemic infections with Candida albicans and Listeria monocytogenes. Int J Immunopharmac 15 605-614 Lorke D (1983) A new approach to practical acute toxicity testing. Arch Toxicol 54 275-287 (1983)... 

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