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Characterization of...
Characterization of Listeria strains isolated from soft and semi-soft cheeses
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- Loncarevic, Semir (author)
- Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden
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- Bannerman, Elisabeth (author)
- Centre National des Listeria, Institut de Microbiologi, Lausanne, Switzerland
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- Bille, Jacques (author)
- Centre National des Listeria, Institut de Microbiologi, Lausanne, Switzerland
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- Danielsson-Tham, Marie-Louise, 1947- (author)
- Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden
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- Tham, Wilhelm, 1951- (author)
- Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden
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(creator_code:org_t)
- Elsevier, 1998
- 1998
- English.
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In: Food microbiology (Print). - : Elsevier. - 0740-0020 .- 1095-9998. ; 15:5, s. 521-525
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Two hundred strains ofListeria monoctyogenespreviously isolated from 19 soft and semi-soft cheeses by enrichment were characterized by serotyping and pulsed-field gel electrophoresis (PFGE). Strains of serogroup 1/2 predominated, with 33.5% of all strains belonging to serovar 1/2a, 58.5% to serovar 1/2b and 5% to serovar 1/2c. By using a PFGE method, 16 different clonal types were obtained. All 10 isolates ofL. monocytogenesrecovered from one white mould cheese were serovar 1/2a, but displayed two different PFGE profiles. Another 10L. monocytogenesisolates from white mould cheese recovered after a 48-h enrichment broth procedure revealed two clonal types, only one of which could be detected after 5 additional days of incubation in the same enrichment broth. Cross-contamination in dairy plants and/or retail stores may play an important role in the incidence and diversity ofL. monocytogenesclonal types recovered from soft and semi-soft cheeses. Therefore, it is necessary to characterize several isolates from the same sample when conducting epidemiological investigations.Copyright © 1998 Academic Press. All rights reserved.
Keyword
- Måltidskunskap
- Culinary Arts and Meal Science
Publication and Content Type
- ref (subject category)
- art (subject category)
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