Effects of oxygen-depleted atmospheres on survival and growth of Listeria monocytogenes on fresh-cut Iceberg lettuce stored at mild abuse commercial temperatures

The effects of oxygen-depleted atmospheres, 0.25% O2 þ 12% CO2 (balance N2) and 2% O2 þ 6% CO2 (balance N2), on growth of Listeria monocytogenes on fresh-cut Iceberg lettuce were determined. The study was carried out at mild abuse temperatures using controlled atmosphere chambers. During storage at...

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Detalles Bibliográficos
Autores: O'Beirne, D, Tudela, J.A., Allende, A, Gil, M.I., Gómez López, Vicente Manuel
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universidad Católica San Antonio de Murcia (UCAM)
Repositorio:RIUCAM. Repositorio Institucional de la Universidad Católica San Antonio de Murcia
OAI Identifier:oai:repositorio.ucam.edu:10952/2394
Acceso en línea:http://hdl.handle.net/10952/2394
Access Level:acceso abierto
Palabra clave:Food safety
Listeria monocytogenes
Modified atmosphere packaging
Minimal processing
Shelf-life
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spelling Effects of oxygen-depleted atmospheres on survival and growth of Listeria monocytogenes on fresh-cut Iceberg lettuce stored at mild abuse commercial temperaturesO'Beirne, DTudela, J.A.Allende, AGil, M.I.Gómez López, Vicente ManuelFood safetyListeria monocytogenesModified atmosphere packagingMinimal processingShelf-lifeThe effects of oxygen-depleted atmospheres, 0.25% O2 þ 12% CO2 (balance N2) and 2% O2 þ 6% CO2 (balance N2), on growth of Listeria monocytogenes on fresh-cut Iceberg lettuce were determined. The study was carried out at mild abuse temperatures using controlled atmosphere chambers. During storage at a constant temperature of 7 C, growth was enhanced at the lower oxygen level of 0.25% O2 by Day 10. Over 17 days of storage at temperatures designed to mimic mild abuse commercial conditions, there were again significantly higher counts under 0.25% O2 from Day 10 onwards. These were 0.9 and 0.7 log cycles higher on Days 14 and 17, respectively. When a model lettuce agar medium was used to eliminate possible interactions with competing flora the direct effects of the atmosphere enhancing the growth of L. monocytogenes was also observed. It is concluded that use of very O2-depleted atmospheres for control of enzymatic browning of fresh-cut Iceberg lettuce may introduce a potential hazard under some commercial conditions. There is a need for greater vigilance and possibly additional measures to ensure consumer safety.Ciencias de la AlimentaciónElsevier Ltd2015info:eu-repo/semantics/articlehttp://hdl.handle.net/10952/2394reponame:RIUCAM. Repositorio Institucional de la Universidad Católica San Antonio de Murciainstname:Universidad Católica San Antonio de Murcia (UCAM)Inglésinfo:eu-repo/semantics/openAccessoai:repositorio.ucam.edu:10952/23942026-06-07T18:35:21Z
dc.title.none.fl_str_mv Effects of oxygen-depleted atmospheres on survival and growth of Listeria monocytogenes on fresh-cut Iceberg lettuce stored at mild abuse commercial temperatures
title Effects of oxygen-depleted atmospheres on survival and growth of Listeria monocytogenes on fresh-cut Iceberg lettuce stored at mild abuse commercial temperatures
spellingShingle Effects of oxygen-depleted atmospheres on survival and growth of Listeria monocytogenes on fresh-cut Iceberg lettuce stored at mild abuse commercial temperatures
O'Beirne, D
Food safety
Listeria monocytogenes
Modified atmosphere packaging
Minimal processing
Shelf-life
title_short Effects of oxygen-depleted atmospheres on survival and growth of Listeria monocytogenes on fresh-cut Iceberg lettuce stored at mild abuse commercial temperatures
title_full Effects of oxygen-depleted atmospheres on survival and growth of Listeria monocytogenes on fresh-cut Iceberg lettuce stored at mild abuse commercial temperatures
title_fullStr Effects of oxygen-depleted atmospheres on survival and growth of Listeria monocytogenes on fresh-cut Iceberg lettuce stored at mild abuse commercial temperatures
title_full_unstemmed Effects of oxygen-depleted atmospheres on survival and growth of Listeria monocytogenes on fresh-cut Iceberg lettuce stored at mild abuse commercial temperatures
title_sort Effects of oxygen-depleted atmospheres on survival and growth of Listeria monocytogenes on fresh-cut Iceberg lettuce stored at mild abuse commercial temperatures
dc.creator.none.fl_str_mv O'Beirne, D
Tudela, J.A.
Allende, A
Gil, M.I.
Gómez López, Vicente Manuel
author O'Beirne, D
author_facet O'Beirne, D
Tudela, J.A.
Allende, A
Gil, M.I.
Gómez López, Vicente Manuel
author_role author
author2 Tudela, J.A.
Allende, A
Gil, M.I.
Gómez López, Vicente Manuel
author2_role author
author
author
author
dc.subject.none.fl_str_mv Food safety
Listeria monocytogenes
Modified atmosphere packaging
Minimal processing
Shelf-life
topic Food safety
Listeria monocytogenes
Modified atmosphere packaging
Minimal processing
Shelf-life
description The effects of oxygen-depleted atmospheres, 0.25% O2 þ 12% CO2 (balance N2) and 2% O2 þ 6% CO2 (balance N2), on growth of Listeria monocytogenes on fresh-cut Iceberg lettuce were determined. The study was carried out at mild abuse temperatures using controlled atmosphere chambers. During storage at a constant temperature of 7 C, growth was enhanced at the lower oxygen level of 0.25% O2 by Day 10. Over 17 days of storage at temperatures designed to mimic mild abuse commercial conditions, there were again significantly higher counts under 0.25% O2 from Day 10 onwards. These were 0.9 and 0.7 log cycles higher on Days 14 and 17, respectively. When a model lettuce agar medium was used to eliminate possible interactions with competing flora the direct effects of the atmosphere enhancing the growth of L. monocytogenes was also observed. It is concluded that use of very O2-depleted atmospheres for control of enzymatic browning of fresh-cut Iceberg lettuce may introduce a potential hazard under some commercial conditions. There is a need for greater vigilance and possibly additional measures to ensure consumer safety.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10952/2394
url http://hdl.handle.net/10952/2394
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier Ltd
publisher.none.fl_str_mv Elsevier Ltd
dc.source.none.fl_str_mv reponame:RIUCAM. Repositorio Institucional de la Universidad Católica San Antonio de Murcia
instname:Universidad Católica San Antonio de Murcia (UCAM)
instname_str Universidad Católica San Antonio de Murcia (UCAM)
reponame_str RIUCAM. Repositorio Institucional de la Universidad Católica San Antonio de Murcia
collection RIUCAM. Repositorio Institucional de la Universidad Católica San Antonio de Murcia
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869407500780961792
score 15,300719

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