Repository logo
 
Publication

Antioxidant properties of three different Castanea sativa Portuguese varieties submitted to gamma irradiation

2013Conference object Open access
Simple item page
dc.contributor.authorCarocho, Márcio
dc.contributor.authorAntonio, Amilcar L.
dc.contributor.authorBento, Albino
dc.contributor.authorBotelho, M. Luísa
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2014-03-11T12:17:21Z
dc.date.available2014-03-11T12:17:21Z
dc.date.issued2013
dc.description.abstractThe Northeast of Portugal is responsible for 82% of the nation's total production of chestnuts. Since 2010, European legislation has banned the use of Methyl Bromide in chestnut disinfestation due to environment concerns and health related issues. This fumigant was widely applied over chestnuts and other fruits to kill insects and other contaminating agents, and, although dangerous, it was the most efficient treatment available, since other heat treatments still pose relevant drawbacks. Food irradiation has stepped in as an alternative treatment for food commodities, and our research group has investigated its potential to treat chestnuts [1]. Antioxidants have long been regarded as having beneficial effects in human health by neutralizing free radicals that arise from various metabolic processes. Recent discoveries have proven that the consumption of fruits and vegetables rich in antioxidants is healthier than consuming antioxidant supplements [2]. In this work, we have tested the effects of gamma irradiation at 1 kGy on the antioxidant potential of three different chestnut varieties from Portugal (Judia, Longal and Cota), as a continuing research of previous results with a single variety [1 ,3]. The antioxidant potential was determined through the DPPH (2,2-diphenyl-1-pycrilhyd razyl) scavenging activity, reducing power, lipid peroxidation inhibition by ~-carotene bleaching and Thiobarbituric Reactive Species (TBARS) assays and total phenolics by Folin-ciocalteu assay. The variety with the highest quantity of total phenolics was Judia, followed by Longal. The phenolics in Longal and Cota varieties were preserved by radiation. The biggest difference in DPPH radical scavenging was recorded for Judia, since the other two didn't vary significantly. The reducing power didn't seem to be affected by radiation in all the varieties. In terms of β-carotene bleaching inhibition, the irradiated samples displayed lower EC50 values in Longal and Judia, while in Cota the values were very similar. The TBARS assay showed inverse results, with higher EC50 values for the non-irradiated samples. These results showed that chestnuts are a valuable fruit in terms of antioxidants, and that radiation does not induce significant alterations in their antioxidant potential.por
dc.description.sponsorshipFCT and COMPETE/QREN/EU (ON.2/QREN/EU Project no.13198/201 0; CIMO strategic project PEst-OE/AGR/UI0690/2011 andA.L. Antonio grant- SFRH/PROTEC/67398/2010).por
dc.identifier.citationCarocho, Márcio; Antonio, Amilcar L.; Bento, Albino; Botelho, M. Luisa; Ferreira, Isabel C.F.R. (2013). Antioxidant properties of three different Castanea sativa Portuguese varieties submitted to gamma irradiation. In 1st Symposium on Medicinal Chemistry. Braga: University of Minhopor
dc.identifier.urihttp://hdl.handle.net/10198/9358
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherUniversidade do Minhopor
dc.relationStrategic Project - UI 690 - 2011-2012
dc.subjectSFRH/PROTEC/67398/2010
dc.titleAntioxidant properties of three different Castanea sativa Portuguese varieties submitted to gamma irradiationpor
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleStrategic Project - UI 690 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FAGR%2FUI0690%2F2011/PT
oaire.citation.conferencePlaceBraga, Portugalpor
oaire.citation.title1st Symposium on Medicinal Chemistry of University of Minhopor
oaire.fundingStream6817 - DCRRNI ID
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
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
relation.isAuthorOfPublication46b39e1f-2674-4be1-a96a-c2e5792e6979
relation.isAuthorOfPublication4b23e496-8d11-4ff5-a8ec-e1c2235e5a28
relation.isAuthorOfPublication233115be-9d46-49d0-8b7d-2d64406d64a0
relation.isAuthorOfPublicationbd0d1537-2e03-41fb-b27a-140af9c35db8
relation.isAuthorOfPublication.latestForDiscoverybd0d1537-2e03-41fb-b27a-140af9c35db8
relation.isProjectOfPublicationc59f09d4-9931-4f2e-babb-ef8bed998be7
relation.isProjectOfPublication.latestForDiscoveryc59f09d4-9931-4f2e-babb-ef8bed998be7

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Poster Nac. 118.pdf
Size:
501.7 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.73 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CIMO - Resumos em Proceedings Não Indexados à WoS/Scopus