Characterization of Listeria strains isolated from soft cheese

Details

Serval ID
serval:BIB_76F2EE8601C3
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Characterization of Listeria strains isolated from soft cheese
Journal
International Journal of Food Microbiology
Author(s)
Danielsson-Tham  M. L., Bille  J., Brosch  R., Buchrieser  C., Persson  K., Rocourt  J., Schwarzkopf  A., Tham  W., Ursing  J.
ISSN
0168-1605
Publication state
Published
Issued date
04/1993
Peer-reviewed
Oui
Volume
18
Number
2
Pages
161-6
Notes
Journal Article --- Old month value: Apr
Abstract
Three soft cheeses were exposed to quantitative analysis for listeria and found to contain a large number of listeria. Thirty-five of the listeria strains isolated from the three cheeses were characterized by use of biochemical tests, serotyping, phagetyping and DNA restriction enzyme analysis. Seven isolates were identified as Listeria innocua and 28 as Listeria monocytogenes. Two to four different clones of L. monocytogenes could be identified from each cheese. In contrast, only one clone could be detected among the L. innocua isolates. From an epidemiological point of view the findings of different clones of L. monocytogenes in the same cheese emphasize the need for typing several listeria isolates from one and the same food sample. It is concluded that the best overview of the population of the listeria strains is obtained after direct plating of the sample followed by enumeration, isolation and extensive typing.
Keywords
Bacteriophage Typing Cheese/*microbiology Colony Count, Microbial Electrophoresis, Polyacrylamide Gel *Food Microbiology Hydrogen-Ion Concentration Listeria/*classification/genetics/isolation & purification Restriction Mapping Serotyping
Pubmed
Web of science
Create date
11/02/2008 12:39
Last modification date
20/08/2019 14:34
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