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The clones of Listeria monocytogenes detected in food depend on the method used


Letters in Applied Microbiology 22(5): 381-384
The clones of Listeria monocytogenes detected in food depend on the method used
Restriction enzyme analysis (REA) with pulsed-field gel electrophoresis (PFGE) has been used to characterize and compare Listeria monocytogenes strains isolated from foods by two methods, an enrichment procedure and a direct plating procedure. In total 151 isolates from nine foods were investigated. In six of the foods (101 strains investigated) only one clone of L. monocytogenes was found irrespective of the method used. In three foods (50 strains investigated) the direct plating procedure yielded more clones than the enrichment procedure. At the most, five clones were detected in the same food. The results presented here indicate that direct plating from the food reveals more L. monocytogenes clones than revealed by an enrichment procedure.

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Accession: 047595905

PMID: 8672279

DOI: 10.1111/j.1472-765x.1996.tb01184.x



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