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

Detalhes bibliográficos
Autor(a) principal: Saraiva, Cristina
Data de Publicação: 2016
Outros Autores: Fontes, Maria da Conceição, Patarata, Luis, Martins, Conceição, Cadavez, Vasco, Gonzales-Barron, Ursula
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10198/15337
Resumo: The 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.
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spelling Modelling the kinetics of Listeria monocytogenes in refrigerated fresh beef under different packaging atmospheresModified atmosphere packaging (MAP)Predictive microbiologySurvivalVacuum packagingWeibullThe 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.The 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).Biblioteca Digital do IPBSaraiva, CristinaFontes, Maria da ConceiçãoPatarata, LuisMartins, ConceiçãoCadavez, VascoGonzales-Barron, Ursula2018-01-25T10:00:00Z20162016-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/15337engSaraiva, 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. 664-6710023-643810.1016/j.lwt.2015.11.026info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-21T10:35:52Zoai:bibliotecadigital.ipb.pt:10198/15337Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:04:57.360110Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Modelling the kinetics of Listeria monocytogenes in refrigerated fresh beef under different packaging atmospheres
title Modelling the kinetics of Listeria monocytogenes in refrigerated fresh beef under different packaging atmospheres
spellingShingle Modelling the kinetics of Listeria monocytogenes in refrigerated fresh beef under different packaging atmospheres
Saraiva, Cristina
Modified atmosphere packaging (MAP)
Predictive microbiology
Survival
Vacuum packaging
Weibull
title_short Modelling the kinetics of Listeria monocytogenes in refrigerated fresh beef under different packaging atmospheres
title_full Modelling the kinetics of Listeria monocytogenes in refrigerated fresh beef under different packaging atmospheres
title_fullStr Modelling the kinetics of Listeria monocytogenes in refrigerated fresh beef under different packaging atmospheres
title_full_unstemmed Modelling the kinetics of Listeria monocytogenes in refrigerated fresh beef under different packaging atmospheres
title_sort Modelling the kinetics of Listeria monocytogenes in refrigerated fresh beef under different packaging atmospheres
author Saraiva, Cristina
author_facet Saraiva, Cristina
Fontes, Maria da Conceição
Patarata, Luis
Martins, Conceição
Cadavez, Vasco
Gonzales-Barron, Ursula
author_role author
author2 Fontes, Maria da Conceição
Patarata, Luis
Martins, Conceição
Cadavez, Vasco
Gonzales-Barron, Ursula
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Biblioteca Digital do IPB
dc.contributor.author.fl_str_mv Saraiva, Cristina
Fontes, Maria da Conceição
Patarata, Luis
Martins, Conceição
Cadavez, Vasco
Gonzales-Barron, Ursula
dc.subject.por.fl_str_mv Modified atmosphere packaging (MAP)
Predictive microbiology
Survival
Vacuum packaging
Weibull
topic Modified atmosphere packaging (MAP)
Predictive microbiology
Survival
Vacuum packaging
Weibull
description The 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.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016-01-01T00:00:00Z
2018-01-25T10:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10198/15337
url http://hdl.handle.net/10198/15337
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Saraiva, 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. 664-671
0023-6438
10.1016/j.lwt.2015.11.026
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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