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The effects of e-beam radiation in the antioxidant potential of chestnuts (Castanea sativa Mill.)

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dc.contributor.authorCarocho, Márcio
dc.contributor.authorAntonio, Amilcar L.
dc.contributor.authorKałuska, Iwona
dc.contributor.authorBento, Albino
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2013-01-04T16:16:51Z
dc.date.available2013-01-04T16:16:51Z
dc.date.issued2012
dc.description.abstractChestnut fruits (Castanea sativa Mill.) are widely consumed all over the world, and have been studied in terms of nutritional value and also for their antioxidant potential. In Europe, Portugal is one of the leading producers of this nut, and its conservation is essential. Irradiation might be an alternative conservation method, since methyl bromide, a widely used fumigant, was prohibited as post-harvest technique by the European Union in 2010 due to its toxicity. The alternatives, hot water dip treatment among others, still present some disadvantages. Food treatment with radiation is environment friendly, poses no threat to consumers and is nutritionally adequate. The present study reports the effect of e-beam radiation (doses of 0, 0.5, 1 and 3 kGy, being 0 the control, non-irradiated) on the antioxidant potential of Portuguese chestnuts, as an ongoing project with previous results for gamma radiation. The antioxidant activity was evaluated through 2,2-diphenyl-1-pycryl-hydrazyl (DPPH) free radical scavenging activity assay, reducing power by the Ferricyanide/Prussian blue assay, and lipid peroxidation inhibition by β-carotene/linoleate and thiobarbituric acid reactive substances (TBARS) assays. Total phenolics and flavonoids were performed by spectrophotometric assays. Irradiated samples seemed to preserve total phenolics content (but not flavonoids) and revealed higher antioxidant activity (lower EC50 values) than the control samples. The most indicated dose to maintain antioxidants content, and to increase antioxidant activity was 1 kGy.por
dc.identifier.citationCarocho, Márcio; Antonio, Amilcar L.; Kałuska, Iwona; Bento, Albino; Ferreira, Isabel C.F.R. (2012). The effects of e-beam radiation in the antioxidant potential of chestnuts (Castanea sativa Mill.). In 11º Encontro Nacional de Química dos Alimentos. Bragançapor
dc.identifier.urihttp://hdl.handle.net/10198/7822
dc.language.isoengpor
dc.peerreviewedyespor
dc.relationON.2-QREN-EU 13198/2010
dc.relationON.2/QREN/EU 13198/2010
dc.relationSFRH/PROTEC/67398/2010
dc.subjectChestnutspor
dc.subjectE-beampor
dc.subjectIrradiationpor
dc.subjectAntioxidant potentialpor
dc.titleThe effects of e-beam radiation in the antioxidant potential of chestnuts (Castanea sativa Mill.)por
dc.typeconference paper
dspace.entity.typePublication
oaire.citation.conferencePlaceBragançapor
oaire.citation.title11º Encontro Nacional de Química dos Alimentos, 16 a 19 de Setembro de 2012por
person.familyNameCarocho
person.familyNameAntonio
person.familyNameBento
person.familyNameFerreira
person.givenNameMárcio
person.givenNameAmilcar L.
person.givenNameAlbino
person.givenNameIsabel C.F.R.
person.identifierawbWiiMAAAAJ&hl
person.identifier144781
person.identifier.ciencia-id5614-005B-5CF1
person.identifier.ciencia-id1014-5259-DE86
person.identifier.ciencia-idD516-325A-9AD7
person.identifier.ciencia-id9418-CF95-9919
person.identifier.orcid0000-0002-8978-4547
person.identifier.orcid0000-0001-8271-9964
person.identifier.orcid0000-0001-5215-785X
person.identifier.orcid0000-0003-4910-4882
person.identifier.ridJ-1960-2014
person.identifier.ridN-9706-2016
person.identifier.ridE-8500-2013
person.identifier.scopus-author-id52463229800
person.identifier.scopus-author-id44560921900
person.identifier.scopus-author-id35247694000
person.identifier.scopus-author-id36868826600
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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relation.isAuthorOfPublication.latestForDiscovery46b39e1f-2674-4be1-a96a-c2e5792e6979

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