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dc.contributor.authorKlæboe, Halvdan
dc.contributor.authorRosef, Olav
dc.contributor.authorSæbø, Mona
dc.date.accessioned2007-01-25T16:11:41Z
dc.date.accessioned2017-04-19T12:25:21Z
dc.date.available2007-01-25T16:11:41Z
dc.date.available2017-04-19T12:25:21Z
dc.date.issued2005
dc.identifier.citationInternational journal of environmental health research 15 (2005), No. 2, p. 71-77
dc.identifier.issn1369-1619
dc.identifier.urihttp://hdl.handle.net/11250/2438075
dc.description.abstractTwo plants processing salmon fillets and cold smoked salmon were investigated for occurrence of Listeria in products and the environment. Analyses were conducted for a period of 31 weeks. At plant A, 252 samples were examined of which 97 were from unprocessed fish and 155 from cold-smoked fish. At plant B, 189 samples of unprocessed fish were investigated. The first examination of unprocessed fish at plant A showed a presence of L. monocytogenes and L. spp. in 81% and 19% of the samples respectively. For cold-smoked fish the figures were 43% and 23%. At plant B, L. monocytogenes was isolated in 63% of the samples. During the test period, management at the processing plant initiated various hygiene precautions to improve the sanitary situation. The last batch of analyses of unprocessed fish at plant A showed a presence of L. monocytogenes and L. spp. in 42% and. 33% of the samples respectively. For cold-smoked fish, the figures were 6% and 11%. The isolation figures at plant B for L. monocytogenes and L. spp. were 50% and 17% respectively. The hygienic precautions did not have a significant effect on the presence of L. monocytogenes and L. spp. We suggest that Listeria bacteria are a part of the resident flora and are not eliminated by current cleaning and sanitation programmes. Cold-smoking, however, gave a significant reduction in the isolation of L. monocytogenes (P= 0.0082), while the isolation of L. spp. did not decrease after this process.
dc.format.extent172397 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherTaylor & Francis
dc.subjectSalmon
dc.subjectListeria
dc.subjectProcessing plants
dc.subjectHygienic aspects
dc.titleLongitudinal studies on Listeria monocytogenes and other Listeria species in two salmon processing plants
dc.typeJournal article
dc.typePeer reviewed
dc.subject.nsi472
dc.subject.nsi600
dc.identifier.doihttp://dx.doi.org/10.1080/09603120400012843


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