Reducing antioxidant capacity evaluated by means of a controlled potential oxidative attack

Detalhes bibliográficos
Autor(a) principal: Oliveira, Raquel
Data de Publicação: 2011
Outros Autores: Marques, Juliana Filipa Gouveia, Bento, M. Fátima, Geraldo, M. Dulce, Bettencourt, Ana Paula
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/21911
Resumo: An analytical method suitable for an antioxidant sensor is presented following the response of these substances to an extensive oxidative attack imposed by electrochemical means. The electrochemical assay simulates the action of a reactive oxygen species (ROS) by means of electrolyses carried out at a potential which is settled at the formal potential of the ROS. The antioxidant activities of trolox and ascorbic, gallic and caffeic acids and of mixtures these antioxidants was estimated from the charge required for the complete oxidation of the antioxidants from assays where the oxidative attack by O2 and by O2 were simulated.
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spelling Reducing antioxidant capacity evaluated by means of a controlled potential oxidative attackAntioxidant activityElectrolysisReactive oxygen speciesSensorAn analytical method suitable for an antioxidant sensor is presented following the response of these substances to an extensive oxidative attack imposed by electrochemical means. The electrochemical assay simulates the action of a reactive oxygen species (ROS) by means of electrolyses carried out at a potential which is settled at the formal potential of the ROS. The antioxidant activities of trolox and ascorbic, gallic and caffeic acids and of mixtures these antioxidants was estimated from the charge required for the complete oxidation of the antioxidants from assays where the oxidative attack by O2 and by O2 were simulated.Fundação para a Ciência e Tecnologia (FCT)Centro de Química da Universidade do MinhoWileyUniversidade do MinhoOliveira, RaquelMarques, Juliana Filipa GouveiaBento, M. FátimaGeraldo, M. DulceBettencourt, Ana Paula2011-032011-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/21911engOliveira, R., Marques, J., Bento, F., Geraldo, D., & Bettencourt, P. (2011). Reducing Antioxidant Capacity Evaluated by Means of Controlled Potential Electrolysis. Electroanalysis, 23(3), 692-700. doi: 10.1002/elan.2010004851521-4109http://dx.doi.org/10.1002/elan.201000485info: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:RCAAP2024-05-11T04:26:07Zoai:repositorium.sdum.uminho.pt:1822/21911Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-11T04:26:07Repositório 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 Reducing antioxidant capacity evaluated by means of a controlled potential oxidative attack
title Reducing antioxidant capacity evaluated by means of a controlled potential oxidative attack
spellingShingle Reducing antioxidant capacity evaluated by means of a controlled potential oxidative attack
Oliveira, Raquel
Antioxidant activity
Electrolysis
Reactive oxygen species
Sensor
title_short Reducing antioxidant capacity evaluated by means of a controlled potential oxidative attack
title_full Reducing antioxidant capacity evaluated by means of a controlled potential oxidative attack
title_fullStr Reducing antioxidant capacity evaluated by means of a controlled potential oxidative attack
title_full_unstemmed Reducing antioxidant capacity evaluated by means of a controlled potential oxidative attack
title_sort Reducing antioxidant capacity evaluated by means of a controlled potential oxidative attack
author Oliveira, Raquel
author_facet Oliveira, Raquel
Marques, Juliana Filipa Gouveia
Bento, M. Fátima
Geraldo, M. Dulce
Bettencourt, Ana Paula
author_role author
author2 Marques, Juliana Filipa Gouveia
Bento, M. Fátima
Geraldo, M. Dulce
Bettencourt, Ana Paula
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Oliveira, Raquel
Marques, Juliana Filipa Gouveia
Bento, M. Fátima
Geraldo, M. Dulce
Bettencourt, Ana Paula
dc.subject.por.fl_str_mv Antioxidant activity
Electrolysis
Reactive oxygen species
Sensor
topic Antioxidant activity
Electrolysis
Reactive oxygen species
Sensor
description An analytical method suitable for an antioxidant sensor is presented following the response of these substances to an extensive oxidative attack imposed by electrochemical means. The electrochemical assay simulates the action of a reactive oxygen species (ROS) by means of electrolyses carried out at a potential which is settled at the formal potential of the ROS. The antioxidant activities of trolox and ascorbic, gallic and caffeic acids and of mixtures these antioxidants was estimated from the charge required for the complete oxidation of the antioxidants from assays where the oxidative attack by O2 and by O2 were simulated.
publishDate 2011
dc.date.none.fl_str_mv 2011-03
2011-03-01T00:00:00Z
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/1822/21911
url http://hdl.handle.net/1822/21911
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Oliveira, R., Marques, J., Bento, F., Geraldo, D., & Bettencourt, P. (2011). Reducing Antioxidant Capacity Evaluated by Means of Controlled Potential Electrolysis. Electroanalysis, 23(3), 692-700. doi: 10.1002/elan.201000485
1521-4109
http://dx.doi.org/10.1002/elan.201000485
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 Wiley
publisher.none.fl_str_mv Wiley
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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