What question did this study set out to answer?

Assess the prevalence and contamination levels of Listeria monocytogenes in retail gravlax and cold-smoked salmon following updated food safety hygiene protocols.

September 22, 2008Journal of Foodservice

Gravad (Gravlax) and cold‐smoked salmon, still a potential source of listeriosis

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Authors

IPInoka PeirisÖrebro University GLGloria Lopez‐ValladaresÖrebro University VPVishal Singh PariharÖrebro University

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Implication

Surveillance study reveals persistent Listeria monocytogenes contamination in commercial salmon products, highlighting ongoing risks for foodborne human infection.

Key Points

Assess the prevalence and contamination levels of Listeria monocytogenes in retail gravlax and cold-smoked salmon following updated food safety hygiene protocols.
Follow-up surveillance study analyzing 56 commercial gravad and cold-smoked salmon products from various manufacturers in Sweden.
Quantified bacterial levels (cfu/g) and conducted molecular characterization using serotyping and pulsed-field gel electrophoresis (PFGE) alongside restriction enzyme analysis.
Listeria monocytogenes was isolated from 11 of the 56 analyzed products from three manufacturers, with contamination reaching up to 1500 cfu/g in cold-smoked salmon though most remained under 100 cfu/g.
Serovar 1/2a predominated, followed by serovar 4b.
Molecular typing identified five genetic types among the isolates, including one profile identical and two closely related to documented human clinical strains.

Cite This Study

Peiris et al. (2008) studied this question.

synapsesocial.com/papers/6a9812f4ce42e14121e18a21 https://doi.org/10.1111/j.1748-0159.2008.00118.x

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Implication

Surveillance study reveals persistent Listeria monocytogenes contamination in commercial salmon products, highlighting ongoing risks for foodborne human infection.

Gravad (Gravlax) and cold‐smoked salmon, still a potential source of listeriosis

Discussion

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Implication

Key Points

Cite This Study

Gravad (Gravlax) and cold‐smoked salmon, still a potential source of listeriosis

Discussion

Member takes

Implication

Key Points

Cite This Study

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