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Low dose gamma-irradiation as a suitable solution for chestnut (Castanea sativa Miller) conservation: effects on sugars, fatty acids and tocopherols

2011Journal article Restricted access
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dc.contributor.authorFernandes, Ângela
dc.contributor.authorAntonio, Amilcar L.
dc.contributor.authorBarros, Lillian
dc.contributor.authorBarreira, João C.M.
dc.contributor.authorBento, Albino
dc.contributor.authorBotelho, M. Luísa
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2011-10-25T09:32:50Z
dc.date.available2011-10-25T09:32:50Z
dc.date.issued2011
dc.description.abstractAlong with dehydration, the development of insects and microorganisms is the major drawback in chestnut conservation. Irradiation has been regaining interest as an alternative technology to increase food products shelf-life. In the present work, the effects of low dose gamma irradiation on sugars, fatty acids and tocopherols composition of chestnuts stored at 4 ºC for different storage periods (0, 30 and 60 days) was evaluated. The irradiations were performed in a 60Co experimental equipment, for 1 h (0.27 +/- 0.04 kGy) and 2 h (0.54 +/- 0.04 kGy). Changes in sugars and tocopherols were determined by high performance liquid chromatography (HPLC) coupled to refraction index (RI) and fluorescence detections, respectively, while changes in fatty acids were analysed by gas-chromatography coupled to flame ionization detection (GC-FID). Regarding sugars composition, storage time proved to have higher effect than irradiation treatment. Fructose and glucose increased after storage, with the corresponding decrease of sucrose. Otherwise, tocopherols content was lower in non-irradiated samples, without a significant influence of storage. Saturated (SFA), monounsaturated (MUFA) and polyunsaturated (PUFA) fatty acids levels were not affected neither by storage nor irradiation. Nevertheless, some individual fatty acids concentrations were influenced by one of both factors, such as the increase of palmitic acid in irradiated samples or the decrease of oleic acid after 60 days of storage. Overall, the assayed irradiation doses seem to be a promising alternative treatment to increase chestnuts shelf-life, without affect the profile and composition in important nutrients.por
dc.identifier.citationFernandes, Ângela; Antonio, Amilcar L.; Barros, Lillian; Barreira, João C.M.; Bento, Albino; Botelho, M. Luisa; Ferreira, Isabel C.F.R. (2011). Low dose gamma-irradiation as a suitable solution for chestnut (Castanea sativa Miller) conservation: effects on sugars, fatty acids and tocopherols. Journal of Agricultural and Food Chemistry. ISSN 0021-8561. 59:18, p. 10028-10033por
dc.identifier.doi10.1021/jf201706y
dc.identifier.issn0021-8561
dc.identifier.issn0021-8561
dc.identifier.urihttp://hdl.handle.net/10198/6228
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherACS Publicationspor
dc.relationSFRH/PROTEC/67398/2010
dc.relationBIOACTIVE PROPERTIES & CYTOPROTECTIVE POTENTIAL OF NATURAL EXTRACTS/INDIVIDUAL COMPOUNDS: APPLICATION OF SINGLE CELL GEL ELECTROPHORESIS AND OTHER BIOCHEMICAL, CHEMICAL AND ELECTROCHEMICAL ASSAYS
dc.subjectIrradiated chestnutspor
dc.subjectGamma irradiationpor
dc.subjectSugarspor
dc.subjectFatty acidspor
dc.subjectTocopherolspor
dc.titleLow dose gamma-irradiation as a suitable solution for chestnut (Castanea sativa Miller) conservation: effects on sugars, fatty acids and tocopherolspor
dc.typejournal article
dspace.entity.typePublication
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/SFRH/SFRH%2FBD%2F44609%2F2008/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F72802%2F2010/PT
oaire.citation.endPage10033por
oaire.citation.issue59por
oaire.citation.startPage10028por
oaire.citation.titleJournal of Agricultural and Food Chemistrypor
oaire.fundingStreamSFRH
person.familyNameFernandes
person.familyNameAntonio
person.familyNameBarros
person.familyNameBarreira
person.familyNameBento
person.familyNameFerreira
person.givenNameÂngela
person.givenNameAmilcar L.
person.givenNameLillian
person.givenNameJoão C.M.
person.givenNameAlbino
person.givenNameIsabel C.F.R.
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person.identifier.scopus-author-id35247694000
person.identifier.scopus-author-id36868826600
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
rcaap.rightsopenAccesspor
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