publication . Article . 2004

Incidence of Listeria monocytogenes in different food products commercialized in Portugal

Cristina Mena; Gonçalo Almeida; Luísa Carneiro; Paula Teixeira; Tim Hogg; Paul A. Gibbs;
Open Access English
  • Published: 05 Feb 2004
  • Publisher: Elsevier
  • Country: Portugal
Several types of food products on sale in Portugal, were examined for the presence of Listeria monocytogenes. Secondary enrichments, in Fraser broth, were analysed by the mini-Vidas LMO, enzyme-linked fluorescent immunoassay technique. Positive samples were confirmed by isolation on Oxford and PALCAM selective agars followed by biochemical characterization. Of 1035 samples, 72 (7.0%) were positive for L. monocytogenes, the majority being from raw products (milk, meat, fish, flour) although some heat-processed or fermented foods (ready-to-eat) were also positive. In Portugal, a predilection for fresh cheese was indicated as a potential risk for consumers.
Persistent Identifiers
Medical Subject Headings: food and beverages
free text keywords: Listeria monocytogenes, Incidence in foods, Potential risk, Food science, Fermentation in food processing, Bacteria, biology.organism_classification, biology, Food products, Listeria monocytogenes, medicine.disease_cause, medicine, FLUORESCENT IMMUNOASSAY
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