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Estimating Listeria monocytogenes growth in ready-to-eat chicken salad using a challenge test for quantitative microbial risk assessment

2020-11Journal article Open access
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dc.contributor.authorBernardo, Rita
dc.contributor.authorBARRETO, ANTONIO
dc.contributor.authorNunes, Telmo
dc.contributor.authorHenriques, Ana Rita
dc.date.accessioned2022-04-19T21:30:38Z
dc.date.available2022-04-19T21:30:38Z
dc.date.issued2020-11
dc.descriptionResearch Areas: Public, Environmental & Occupational Health ; Mathematics ; Mathematical Methods In Social Sciencespt_PT
dc.description.abstractCurrently, there is a growing preference for convenience food products, such as ready-toeat (RTE) foods, associated with long refrigerated shelf-lives, not requiring a heat treatment prior to consumption. Because Listeria monocytogenes is able to grow at refrigeration temperatures, inconsistent temperatures during production, distribution, and at consumer’s household may allow for the pathogen to thrive, reaching unsafe limits. L. monocytogenes is the causative agent of listeriosis, a rare but severe human illness, with high fatality rates, transmitted almost exclusively by food consumption. With the aim of assessing the quantitative microbial risk of L. monocytogenes in RTE chicken salads, a challenge test was performed. Salads were inoculated with a three-strain mixture of cold-adapted L. monocytogenes and stored at 4, 12, and 16 °C for eight days. Results revealed that the salad was able to support L. monocytogenes’ growth, even at refrigeration temperatures. The Baranyi primary model was fitted to microbiological data to estimate the pathogen’s growth kinetic parameters. Temperature effect on the maximum specific growth rate (μmax) was modeled using a square-root-type model. Storage temperature significantly influenced μmax of L. monocytogenes (p < 0.05). These predicted growth models for L. monocytogenes were subsequently used to develop a quantitative microbial risk assessment, estimating a median number of 0.00008726 listeriosis cases per year linked to the consumption of these RTE salads. Sensitivity analysis considering different time–temperature scenarios indicated a very low median risk per portion (<−7 log), even if the assessed RTE chicken salad was kept in abuse storage conditions.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBernardo R, Barreto AS, Nunes T, Henriques AR. 2020. Estimating Listeria monocytogenes growth in ready-to-eat chicken salad using a challenge test for quantitative microbial risk assessment. Risk Analysis, 40(11):pp.2427-2441. Doi 10.1111/risa.13546pt_PT
dc.identifier.doi10.1111/risa.13546pt_PT
dc.identifier.eissn1539-6924
dc.identifier.issn0272-4332
dc.identifier.urihttp://hdl.handle.net/10400.5/24115
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.relationCenter for Interdisciplinary Research in Animal Health
dc.relation.publisherversionhttps://onlinelibrary.wiley.com/doi/epdf/10.1111/risa.13546pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectChallenge testingpt_PT
dc.subjectListeria monocytogenespt_PT
dc.subjectPredictive growth modelspt_PT
dc.subjectQuantitative microbial risk assessmentpt_PT
dc.subjectReady-to-eat saladpt_PT
dc.titleEstimating Listeria monocytogenes growth in ready-to-eat chicken salad using a challenge test for quantitative microbial risk assessmentpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCenter for Interdisciplinary Research in Animal Health
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FCVT%2F00276%2F2019/PT
oaire.citation.conferencePlaceHoboken, NJpt_PT
oaire.citation.endPage2441pt_PT
oaire.citation.startPage2427pt_PT
oaire.citation.titleRisk Analysispt_PT
oaire.citation.volume40(11)pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameBernardo
person.familyNameBARRETO
person.familyNameLandeiro Raposo Pina Nunes
person.familyNameSá Henriques
person.givenNameRita
person.givenNameANTONIO SALVADOR FERREIRA HENRIQUES BARRETO
person.givenNameTelmo Renato
person.givenNameAna Rita
person.identifier.ciencia-idF713-6444-D446
person.identifier.ciencia-id2C1A-E281-3E6F
person.identifier.ciencia-id501F-C57B-47B8
person.identifier.orcid0000-0001-7703-6683
person.identifier.orcid0000-0002-1679-4461
person.identifier.orcid0000-0003-4388-5366
person.identifier.orcid0000-0001-9098-4389
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublicationda570f3f-6cbd-496f-8e35-70f1c21c44d2
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relation.isAuthorOfPublication7bfae570-d31f-4176-80ba-c5c2799efc2d
relation.isAuthorOfPublication.latestForDiscovery18d1181b-fc45-4453-bbc5-95ea53b3413a
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