Black Aspergillus species as ochratoxin A producers in Portuguese wine grapes
Autor(a) principal: | |
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Data de Publicação: | 2003 |
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/1822/1402 |
Resumo: | To evaluate the incidence of fungi producing ochratoxin A (OA) in Portuguese wine grapes, a survey was conducted in 11 vineyards, from four winemaking regions each with distinct climatic conditions. From setting to the harvesting period, a total of 1650 berries were sampled by plating methods. Out of 370 aspergilli and 301 Penicillium strains isolated, 14% of the aspergilli were OA-producing strains. None of the penicillia were OA-producing strains. The black aspergilli were predominant (90%). All Aspergillus strains were tested in vitro for OA production and all were preserved in the Micoteca da Universidade do Minho (MUM) culture collection. Most of the Aspergillus carbonarius (97%) and 4% of the Aspergillus niger aggregate strains were OA producers. Almost all ochratoxigenic strains were isolated at harvest time, mainly in the regions with a Mediterranean climate. In the vineyards sampled, the percentage of colonized berries with ochratoxigenic strains was up to 38%. The vineyards from the region with Atlantic influences, with high rainfall, exhibited the lowest occurrence of Aspergillus and ochratoxigenic strains, 0% to 10% and 0% to 2% colonized berries, respectively. Data obtained here supports the hypothesis that A. carbonarius and occasionally A. niger, are the main producers of OA in grapes. In this study, the highest incidence of these fungi occurred in vineyards with a Mediterranean climate. |
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Black Aspergillus species as ochratoxin A producers in Portuguese wine grapesA. carbonariusBlack aspergilliGrapesOchratoxin AWineScience & TechnologyTo evaluate the incidence of fungi producing ochratoxin A (OA) in Portuguese wine grapes, a survey was conducted in 11 vineyards, from four winemaking regions each with distinct climatic conditions. From setting to the harvesting period, a total of 1650 berries were sampled by plating methods. Out of 370 aspergilli and 301 Penicillium strains isolated, 14% of the aspergilli were OA-producing strains. None of the penicillia were OA-producing strains. The black aspergilli were predominant (90%). All Aspergillus strains were tested in vitro for OA production and all were preserved in the Micoteca da Universidade do Minho (MUM) culture collection. Most of the Aspergillus carbonarius (97%) and 4% of the Aspergillus niger aggregate strains were OA producers. Almost all ochratoxigenic strains were isolated at harvest time, mainly in the regions with a Mediterranean climate. In the vineyards sampled, the percentage of colonized berries with ochratoxigenic strains was up to 38%. The vineyards from the region with Atlantic influences, with high rainfall, exhibited the lowest occurrence of Aspergillus and ochratoxigenic strains, 0% to 10% and 0% to 2% colonized berries, respectively. Data obtained here supports the hypothesis that A. carbonarius and occasionally A. niger, are the main producers of OA in grapes. In this study, the highest incidence of these fungi occurred in vineyards with a Mediterranean climate.European Commission (EC) - Quality of Life Programme (QoL) Fundacão para a Ciência e Tecnologia - SFRH/BD/1436/2000Elsevier ScienceUniversidade do MinhoSerra, RitaAbrunhosa, LuísKozakiewicz, Z.Venâncio, Armando20032003-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/1402eng"International journal of food microbiology". ISSN 0168-1605. 88 (2003) 63-68.0168-160510.1016/S0168-1605(03)00085-014527786info: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:RCAAP2023-07-21T12:51:18Zoai:repositorium.sdum.uminho.pt:1822/1402Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:50:10.223600Repositório 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 |
Black Aspergillus species as ochratoxin A producers in Portuguese wine grapes |
title |
Black Aspergillus species as ochratoxin A producers in Portuguese wine grapes |
spellingShingle |
Black Aspergillus species as ochratoxin A producers in Portuguese wine grapes Serra, Rita A. carbonarius Black aspergilli Grapes Ochratoxin A Wine Science & Technology |
title_short |
Black Aspergillus species as ochratoxin A producers in Portuguese wine grapes |
title_full |
Black Aspergillus species as ochratoxin A producers in Portuguese wine grapes |
title_fullStr |
Black Aspergillus species as ochratoxin A producers in Portuguese wine grapes |
title_full_unstemmed |
Black Aspergillus species as ochratoxin A producers in Portuguese wine grapes |
title_sort |
Black Aspergillus species as ochratoxin A producers in Portuguese wine grapes |
author |
Serra, Rita |
author_facet |
Serra, Rita Abrunhosa, Luís Kozakiewicz, Z. Venâncio, Armando |
author_role |
author |
author2 |
Abrunhosa, Luís Kozakiewicz, Z. Venâncio, Armando |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Serra, Rita Abrunhosa, Luís Kozakiewicz, Z. Venâncio, Armando |
dc.subject.por.fl_str_mv |
A. carbonarius Black aspergilli Grapes Ochratoxin A Wine Science & Technology |
topic |
A. carbonarius Black aspergilli Grapes Ochratoxin A Wine Science & Technology |
description |
To evaluate the incidence of fungi producing ochratoxin A (OA) in Portuguese wine grapes, a survey was conducted in 11 vineyards, from four winemaking regions each with distinct climatic conditions. From setting to the harvesting period, a total of 1650 berries were sampled by plating methods. Out of 370 aspergilli and 301 Penicillium strains isolated, 14% of the aspergilli were OA-producing strains. None of the penicillia were OA-producing strains. The black aspergilli were predominant (90%). All Aspergillus strains were tested in vitro for OA production and all were preserved in the Micoteca da Universidade do Minho (MUM) culture collection. Most of the Aspergillus carbonarius (97%) and 4% of the Aspergillus niger aggregate strains were OA producers. Almost all ochratoxigenic strains were isolated at harvest time, mainly in the regions with a Mediterranean climate. In the vineyards sampled, the percentage of colonized berries with ochratoxigenic strains was up to 38%. The vineyards from the region with Atlantic influences, with high rainfall, exhibited the lowest occurrence of Aspergillus and ochratoxigenic strains, 0% to 10% and 0% to 2% colonized berries, respectively. Data obtained here supports the hypothesis that A. carbonarius and occasionally A. niger, are the main producers of OA in grapes. In this study, the highest incidence of these fungi occurred in vineyards with a Mediterranean climate. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003 2003-01-01T00:00:00Z |
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/1822/1402 |
url |
http://hdl.handle.net/1822/1402 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"International journal of food microbiology". ISSN 0168-1605. 88 (2003) 63-68. 0168-1605 10.1016/S0168-1605(03)00085-0 14527786 |
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.publisher.none.fl_str_mv |
Elsevier Science |
publisher.none.fl_str_mv |
Elsevier Science |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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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 |
repository.mail.fl_str_mv |
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1799133085276569600 |