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The clones of Listeria monocytogenes detected in food depend on the method used
Author(s) -
Loncarevic S.,
Tham W.,
DanielssonTham M.L.
Publication year - 1996
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/j.1472-765x.1996.tb01184.x
Subject(s) - listeria monocytogenes , pulsed field gel electrophoresis , biology , microbiology and biotechnology , clone (java method) , gel electrophoresis , foodborne pathogen , food science , bacteria , restriction enzyme , food microbiology , plating (geology) , genotype , genetics , gene , paleontology
S. LONCAREVIC, W. THAM AND M.‐L. DANIELSSON‐THAM. 1996. 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.