Abstract
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.
Original language | English |
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Pages (from-to) | 213-216 |
Number of pages | 4 |
Journal | Food Microbiology |
Volume | 21 |
Issue number | 2 |
DOIs | |
Publication status | Published - Apr 2004 |
Keywords
- Incidence in foods
- Listeria monocytogenes