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Modelling the kinetics of Listeria monocytogenes in refrigerated fresh beef under different packaging atmospheres

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dc.contributor.authorSaraiva, Cristina
dc.contributor.authorFontes, Maria da Conceição
dc.contributor.authorPatarata, Luis
dc.contributor.authorMartins, Conceição
dc.contributor.authorCadavez, Vasco
dc.contributor.authorGonzales-Barron, Ursula
dc.date.accessioned2018-01-25T10:00:00Z
dc.date.accessioned2018-01-30T16:39:41Z
dc.date.available2018-01-25T10:00:00Z
dc.date.available2018-01-30T16:39:41Z
dc.date.issued2016
dc.description.abstractThe objective of this study was to model the fate of Listeria monocytogenes inoculated in beef at two concentrations (2.5 and 4.0 log CFU/g), packaged under air, vacuum and three modified atmospheres MAP: 70%O 2 /20%CO 2 /10%N 2 , 50%O 2 /40%CO 2 /10%N 2 and 30%O 2 /60%CO 2 /10%N 2 , and refrigerated at a normal temperature (4 °C) and at a mild abusive temperature (9 °C). The experimental design produced a total of 20 environmental conditions. An omnibus model based on the Weibull equation proved statistically that L. monocytogenes survives better in vacuum (VP) than in aerobic conditions, although without significant difference in its ability to survive in the temperature range between 4 °C and 9 °C. Furthermore, regardless of the refrigeration temperature, the presence of CO 2 in the package atmosphere exerted a bactericidal effect on L. monocytogenes cells, being approximately 1.5 log of reduction when storage time reached 10 days. Since the pathogen can survive in VP/MAP beef, there is a need of maintaining its numbers below 100 CFU/g before packaging by placing efforts on the implementation of control measures during processing.pt_PT
dc.description.sponsorshipThe authors would like to thank CECAV-UTAD and the research is supported by national funds by FCT- Portuguese Foundation for Science and Technology, under the PEst-OE/AGR/UI0772/2014. Dr. Gonzales–Barron wishes to acknowledge the financial support provided by the Portuguese Foundation for Science and Technology (FCT) through the award of a five-year Investigator Fellowship (IF) in the mode of Development Grants (IF/00570).
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSaraiva, C.; Fontes, M. C.; Patarata, L.; Martins, C.; Cadavez, V.; Gonzales-Barron, U. (2016). Modelling the kinetics of Listeria monocytogenes in refrigerated fresh beef under different packaging atmospheres. LWT - Food Science and Technology. ISSN 0023-6438. 66, p. 664-671en_EN
dc.identifier.doi10.1016/j.lwt.2015.11.026pt_PT
dc.identifier.issn0023-6438
dc.identifier.urihttp://hdl.handle.net/10198/15337
dc.language.isoeng
dc.peerreviewedyespt_PT
dc.subjectModified atmosphere packaging (MAP)en_EN
dc.subjectPredictive microbiologyen_EN
dc.subjectSurvivalen_EN
dc.subjectVacuum packagingen_EN
dc.subjectWeibullen_EN
dc.titleModelling the kinetics of Listeria monocytogenes in refrigerated fresh beef under different packaging atmospheresen_EN
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/PEst-OE%2FAGR%2FUI0772%2F2014/PT
oaire.fundingStream5876
person.familyNameCadavez
person.familyNameGonzales-Barron
person.givenNameVasco
person.givenNameUrsula
person.identifierR-000-HDG
person.identifier.ciencia-id441B-01AB-A12E
person.identifier.ciencia-id0813-C319-B62A
person.identifier.orcid0000-0002-3077-7414
person.identifier.orcid0000-0002-8462-9775
person.identifier.ridA-3958-2010
person.identifier.scopus-author-id9039121900
person.identifier.scopus-author-id9435483700
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccessen_EN
rcaap.typearticlept_PT
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relation.isAuthorOfPublication17c6b98f-4fb5-41d3-839a-6f77ec70021a
relation.isAuthorOfPublication.latestForDiscovery17c6b98f-4fb5-41d3-839a-6f77ec70021a
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