Prevalence of Listeria monocytogenes and other Listeria spp. in smoked and ’’gravad’’ fish

Loncarevic, SemirDepartment of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden (författare)

Altogether 150 samples of vacuum-packed fish were examined for the presence of listeria species. Listeria monocytogenes was isolated from 12 of 58 ''gravad'' fish samples, 3 of 26 cold-smoked and one of 66 hot-smoked fish samples. Ten of these 16 positive samples harboured more than 100 L. monocytogenes cfu/g. The highest level (132 000) was found in a sample of hot-smoked rainbow trout (Oncorhynchus mykiss). Serogroup 1/2 was most frequently found, followed by 4 and 3. One sample of gravad rainbow trout harboured more than one serogroup of L. monocytogenes. L. innocua and L. seeligeri were isolated from 12 and 1 samples, respectively.

Tham, Wilhelm,1951-Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden(Swepub:oru)wtm (författare)
Danielsson-Tham, Marie-Louise,1947-Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden(Swepub:oru)midn (författare)
Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden (creator_code:org_t)

Ingår i:Acta Veterinaria Scandinavica: Danske Dyrelaegeforening37:1, s. 13-180044-605X1751-0147

Av författaren/redakt...: Loncarevic, Semi ...; Tham, Wilhelm, 1 ...; Danielsson-Tham, ...

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