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Effects of electron beam irradiation on antioxidant activity of mushrooms Amanita spp

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dc.contributor.authorFernandes, Ângela
dc.contributor.authorBarreira, João C.M.
dc.contributor.authorAntonio, Amilcar L.
dc.contributor.authorOliveira, Beatriz
dc.contributor.authorMartins, Anabela
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2015-11-06T11:43:19Z
dc.date.available2015-11-06T11:43:19Z
dc.date.issued2015
dc.description.abstractA diet rich in natural antioxidant compounds has been linked to a reduced risk of developing chronic oxidative stress-related diseases, including câncer and cardiovascular and neurodegenerative diseases. In addition to their highly appreciated nutritional value, mushrooms could be an interesting source of antioxidant compounds [l]. Nevertheless, their short shelf-life might be a limitation to the distribution and marketing of fresh mushrooms. Drying is one of the most used conservation methods applied to mushrooms [2], but it causes the reduction ofvegetative cells ofmicroorganisms, which gives rise to a flora of bactéria and füagi that have the ability to survive for long periods in dried foods, producing toxins harmfül to human health [3]. In this sense, electron beam irradiation is a possible way to improve food quality, reduce the incidence of foodbome diseases caused by microorganisms, decontaminate pests, insects or parasites that inflict food spoilage and toxicity, thereby replacing the chemical treatments [3]. Nevertheless, this process should keep the chemical and bioactive characteristics of the matrices. Herein, the effects of electron beam irradiation in the antioxidant potential of Amanita caesarea (Scop. ) Pers. andAmanita curtipes E.-J. Gilbert dried samples were evaluated. The fhiiting bodies were obtained in Trás-os-Montes, in the Northeast of Portugal, in October 2013, and dried at 30 °C in an oven. Subsequently, the samples were divided in four groups with five specimens of each mushroom species: control (non-irradiated, O kGy); sample l (2 kGy); sample 2 (6 kGy) and sample 3 (10 kGy), kept in polyethylene bags. The irradiation was performed at the Institute of Nuclear Chemistry and Technology, in Warsaw, Poland. The antioxidant properties were evaluated through scavenging activity against 2,2-diphenyl-l-picrylhydrazyl (DPPH) radicais, reducing power, inhibition oflipid peroxidation using thiobarbituric acid reactive substances (TBARS) and p-carotenelinoleate model systems. With no exception, irradiated samples (especially for the higher doses) showed to be more antioxidant, either as DPPH radical scavengers, ferric reducers and p-carotene bleaching or TBARS fonnation inhibitors. The higher antioxidant activity was coherent with the leveis of phenolics, which also increased with extending irradiation doses. Except for TBARS formation inhibition, A. caesarea showed higher antioxidant activity than A. curtipes, and besides this action, the assayed mushroom proved to be particularly active as reducing agent. An increased bioactivity with the doses reflects an additional advantage of irradiating mushrooms. Electron beam irradiation might provide a useful altemative to ensure the quality and extend the life ofmushrooms.pt_PT
dc.identifier.citationFernandes, Ângela; Barreira, João C.M.; Antonio, Amilcar L.; Oliveira, M.B.P.P.; Martins, Anabela; Ferreira, Isabel C.F.R. (2015). Effects of electron beam irradiation on antioxidant activity of mushrooms Amanita spp. In 5th MoniQA International Conference 2015. Porto. ISBN 978-3-9504109-0-7pt_PT
dc.identifier.isbn978-3-9504109-0-7
dc.identifier.urihttp://hdl.handle.net/10198/12298
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationBIOACTIVE PROPERTIES & CYTOPROTECTIVE POTENTIAL OF NATURAL EXTRACTS/INDIVIDUAL COMPOUNDS: APPLICATION OF SINGLE CELL GEL ELECTROPHORESIS AND OTHER BIOCHEMICAL, CHEMICAL AND ELECTROCHEMICAL ASSAYS
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectWild mushroomspt_PT
dc.subjectAmanita spp.pt_PT
dc.subjectDryingpt_PT
dc.subjectElectron beampt_PT
dc.subjectAntioxidant propertiespt_PT
dc.titleEffects of electron beam irradiation on antioxidant activity of mushrooms Amanita spppt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardNumberPEst-OE/AGR/UI0690/2014
oaire.awardNumberIncentivo/EQB/LA0006/2014
oaire.awardNumberSFRH/BD/76019/2011
oaire.awardNumberSFRH/BPD/72802/2010
oaire.awardTitleBIOACTIVE PROPERTIES & CYTOPROTECTIVE POTENTIAL OF NATURAL EXTRACTS/INDIVIDUAL COMPOUNDS: APPLICATION OF SINGLE CELL GEL ELECTROPHORESIS AND OTHER BIOCHEMICAL, CHEMICAL AND ELECTROCHEMICAL ASSAYS
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/PEst-OE%2FAGR%2FUI0690%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/Incentivo%2FEQB%2FLA0006%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F76019%2F2011/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F72802%2F2010/PT
oaire.citation.title5th MoniQA International Conference 2015, Food and Helath- Risks and beneffitspt_PT
oaire.fundingStream5876
oaire.fundingStream3599-PPCDT
oaire.fundingStreamSFRH
person.familyNameFernandes
person.familyNameBarreira
person.familyNameAntonio
person.familyNameMartins
person.familyNameFerreira
person.givenNameÂngela
person.givenNameJoão C.M.
person.givenNameAmilcar L.
person.givenNameAnabela
person.givenNameIsabel C.F.R.
person.identifier144781
person.identifier.ciencia-id2015-0434-AE7C
person.identifier.ciencia-id1014-5259-DE86
person.identifier.ciencia-id7B18-A810-6B93
person.identifier.ciencia-id9418-CF95-9919
person.identifier.orcid0000-0002-0157-9873
person.identifier.orcid0000-0003-1233-0990
person.identifier.orcid0000-0001-8271-9964
person.identifier.orcid0000-0001-6218-4413
person.identifier.orcid0000-0003-4910-4882
person.identifier.ridD-8269-2013
person.identifier.ridJ-1960-2014
person.identifier.ridG-5488-2013
person.identifier.ridE-8500-2013
person.identifier.scopus-author-id54895546900
person.identifier.scopus-author-id44560921900
person.identifier.scopus-author-id7203013518
person.identifier.scopus-author-id36868826600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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