Modelling the kinetics of Listeria monocytogenes in refrigerated fresh beef under different packaging atmospheres
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
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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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 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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