Gamma irradiation in ochratoxin A control

Detalhes bibliográficos
Autor(a) principal: Calado, Thalita
Data de Publicação: 2017
Outros Autores: Verde, Sandra Cabo, Venâncio, Armando, Abrunhosa, Luís
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/47201
Resumo: ICFC 2017 - International Conference on Food Contaminants (Book of Abstracts)
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spelling Gamma irradiation in ochratoxin A controlOchratoxin AGamma irradiationGrape juiceWheat flourWineICFC 2017 - International Conference on Food Contaminants (Book of Abstracts)Ochratoxin A (OTA) is one of the main mycotoxins found in food. Gamma radiation is used for preserving foods since it inactivates pathogens. The effect of irradiation on mycotoxins has been studied but results are contradictory. The different matrices and conditions used by several authors may have influenced reported results. The aim of this work was to study the effects of gamma radiation in OTA in order to evaluate its applicability in foods. OTA was irradiated in its dry form, in aqueous and in methanolic solutions to evaluate the water role in OTA irradiation. Then, OTA contaminated food matrices, such as wheat flour, grape juice and wine, were irradiated.In aqueous solutions, high degradation of OTA (≥90%) was obtained with gamma radiation doses as low as 2.5kGy. However, in dried samples, OTA was found extremely resistant to radiation doses of up to 10kGy. In this case, water was a determinant factor for the effectiveness of irradiation process. In the assays with food matrices, radiation doses greater than 10kGy were needed to achieve higher reductions of OTA, being eliminated just 24%. It was also observed that OTA elimination was higher in wheat flour with higher moisture contents but the elimination of OTA in grape juice and wine were not higher than those observed in wheat flour. It is concluded that OTA is very sensitive to irradiation in water solutions but resistant in its dry form and in food matrices. Due to the low elimination percentage observed, it can be considered that gamma radiation is not a suitable technology for the elimination of OTA from foods.Thalita Calado and Luís Abrunhosa received support by grants SFRH/BD/79364/2011 and UMINHO/BPD/51/2015 from FCT, respectively. CEB gratefully acknowledge FCT support through projects UID/BIO/04469/2013, NORTE-01-0145-FEDER-000004, and RECI/BBB-EBI/0179/2012. The C2TN/IST authors gratefully acknowledge their FCT support through projects RECI/AAG-TEC/0400/2012 and UID/Multi/04349/2013.info:eu-repo/semantics/publishedVersionUniversidade do MinhoCalado, ThalitaVerde, Sandra CaboVenâncio, ArmandoAbrunhosa, Luís2017-07-132017-07-13T00:00:00Zconference objectinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/1822/47201engCalado, Thalita; Verde, Sandra Cabo; Venâncio, Armando; Abrunhosa, Luís, Gamma irradiation in ochratoxin A control. ICFC 2017 - International Conference on Food Contaminants (Book of Abstracts). No. 4.18, Braga, Portugal, June 13-14, 96, 2017. ISBN: 978-989-97478-9-0978-989-97478-9-0https://www.icfc2017.uminho.ptinfo: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:RCAAP2024-05-11T07:03:58Zoai:repositorium.sdum.uminho.pt:1822/47201Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-11T07:03:58Repositório 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 Gamma irradiation in ochratoxin A control
title Gamma irradiation in ochratoxin A control
spellingShingle Gamma irradiation in ochratoxin A control
Calado, Thalita
Ochratoxin A
Gamma irradiation
Grape juice
Wheat flour
Wine
title_short Gamma irradiation in ochratoxin A control
title_full Gamma irradiation in ochratoxin A control
title_fullStr Gamma irradiation in ochratoxin A control
title_full_unstemmed Gamma irradiation in ochratoxin A control
title_sort Gamma irradiation in ochratoxin A control
author Calado, Thalita
author_facet Calado, Thalita
Verde, Sandra Cabo
Venâncio, Armando
Abrunhosa, Luís
author_role author
author2 Verde, Sandra Cabo
Venâncio, Armando
Abrunhosa, Luís
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Calado, Thalita
Verde, Sandra Cabo
Venâncio, Armando
Abrunhosa, Luís
dc.subject.por.fl_str_mv Ochratoxin A
Gamma irradiation
Grape juice
Wheat flour
Wine
topic Ochratoxin A
Gamma irradiation
Grape juice
Wheat flour
Wine
description ICFC 2017 - International Conference on Food Contaminants (Book of Abstracts)
publishDate 2017
dc.date.none.fl_str_mv 2017-07-13
2017-07-13T00:00:00Z
dc.type.driver.fl_str_mv conference object
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/47201
url http://hdl.handle.net/1822/47201
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Calado, Thalita; Verde, Sandra Cabo; Venâncio, Armando; Abrunhosa, Luís, Gamma irradiation in ochratoxin A control. ICFC 2017 - International Conference on Food Contaminants (Book of Abstracts). No. 4.18, Braga, Portugal, June 13-14, 96, 2017. ISBN: 978-989-97478-9-0
978-989-97478-9-0
https://www.icfc2017.uminho.pt
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
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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