Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates

Aspergillus steynii and Aspergillus westerdijkiae are the main ochratoxin A (OTA) producing species of Aspergillus section Circumdati. Due to its recent description, few data are available about the influence of cophysiological factors on their growth and OTA production profiles. In this work, the e...

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Detalles Bibliográficos
Autores: Gil Serna, Jessica, Patiño Álvarez, Aurora Belén, Cortes, Laura, González Jaén, María Teresa, Vázquez Estévez, María Covadonga Inmaculada
Tipo de recurso: artículo
Fecha de publicación:2014
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/34884
Acceso en línea:https://hdl.handle.net/20.500.14352/34884
Access Level:acceso abierto
Palabra clave:582.28
579.67
Aspergillus steynii
Aspergillus westerdijkiae
Ecophysiological factors Ochratoxin A
Microbiología (Biología)
2414 Microbiología
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oai_identifier_str oai:docta.ucm.es:20.500.14352/34884
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network_name_str España
repository_id_str
spelling Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climatesGil Serna, JessicaPatiño Álvarez, Aurora BelénCortes, LauraGonzález Jaén, María TeresaVázquez Estévez, María Covadonga Inmaculada582.28579.67Aspergillus steyniiAspergillus westerdijkiaeEcophysiological factors Ochratoxin AMicrobiología (Biología)2414 MicrobiologíaAspergillus steynii and Aspergillus westerdijkiae are the main ochratoxin A (OTA) producing species of Aspergillus section Circumdati. Due to its recent description, few data are available about the influence of cophysiological factors on their growth and OTA production profiles. In this work, the effect of temperature (20, 24 and 28ºC) and water activity (aw) (0.928, 0.964 and 0.995) on rowth, sporulation and OTA production by these fungi was examined in CYA and media prepared from paprika, green coffee, anise, grapes, maize and barley. Growth was positively affected by the highest temperature and aw values indicating that both species might be expected in warm climates or storage conditions. However, optimal growth conditions showed differences depending on the medium. OTA production was markedly affected by substrate and showed qualitative and quantitative differences. Both species, especially A. steynii, represent a great potential risk of OTA contamination due to their high production in a variety of conditions and substrates, in particular in barley and paprika-based media. Additionally, neither growth nor sporulation did result good indicators of OTA production by A. steynii or A. westerdijkiae;therefore, specific and highly-sensitive detection methods become essential tools for control strategies to reduce OTA risk by these species.ElsevierUniversidad Complutense de Madrid20142014-07-2720142014-07-27journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/34884reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/348842026-06-02T12:44:21Z
dc.title.none.fl_str_mv Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
title Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
spellingShingle Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
Gil Serna, Jessica
582.28
579.67
Aspergillus steynii
Aspergillus westerdijkiae
Ecophysiological factors Ochratoxin A
Microbiología (Biología)
2414 Microbiología
title_short Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
title_full Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
title_fullStr Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
title_full_unstemmed Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
title_sort Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
dc.creator.none.fl_str_mv Gil Serna, Jessica
Patiño Álvarez, Aurora Belén
Cortes, Laura
González Jaén, María Teresa
Vázquez Estévez, María Covadonga Inmaculada
author Gil Serna, Jessica
author_facet Gil Serna, Jessica
Patiño Álvarez, Aurora Belén
Cortes, Laura
González Jaén, María Teresa
Vázquez Estévez, María Covadonga Inmaculada
author_role author
author2 Patiño Álvarez, Aurora Belén
Cortes, Laura
González Jaén, María Teresa
Vázquez Estévez, María Covadonga Inmaculada
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 582.28
579.67
Aspergillus steynii
Aspergillus westerdijkiae
Ecophysiological factors Ochratoxin A
Microbiología (Biología)
2414 Microbiología
topic 582.28
579.67
Aspergillus steynii
Aspergillus westerdijkiae
Ecophysiological factors Ochratoxin A
Microbiología (Biología)
2414 Microbiología
description Aspergillus steynii and Aspergillus westerdijkiae are the main ochratoxin A (OTA) producing species of Aspergillus section Circumdati. Due to its recent description, few data are available about the influence of cophysiological factors on their growth and OTA production profiles. In this work, the effect of temperature (20, 24 and 28ºC) and water activity (aw) (0.928, 0.964 and 0.995) on rowth, sporulation and OTA production by these fungi was examined in CYA and media prepared from paprika, green coffee, anise, grapes, maize and barley. Growth was positively affected by the highest temperature and aw values indicating that both species might be expected in warm climates or storage conditions. However, optimal growth conditions showed differences depending on the medium. OTA production was markedly affected by substrate and showed qualitative and quantitative differences. Both species, especially A. steynii, represent a great potential risk of OTA contamination due to their high production in a variety of conditions and substrates, in particular in barley and paprika-based media. Additionally, neither growth nor sporulation did result good indicators of OTA production by A. steynii or A. westerdijkiae;therefore, specific and highly-sensitive detection methods become essential tools for control strategies to reduce OTA risk by these species.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-07-27
2014
2014-07-27
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/34884
url https://hdl.handle.net/20.500.14352/34884
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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