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Computed tomography images to assess the dose in irradiated chestnut fruits

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dc.contributor.authorAntonio, Amilcar L.
dc.contributor.authorTrindade, Mauro
dc.contributor.authorBento, Albino
dc.contributor.authorBotelho, M. Luísa
dc.contributor.authorQuintana, Begoña
dc.date.accessioned2013-02-27T12:26:55Z
dc.date.available2013-02-27T12:26:55Z
dc.date.issued2012
dc.descriptionReport of the Methyl Bromide Technical Options Committee. United Nations Environment Programme. EU, 2008. Commission Decision. Official Journal of the European Union, L 258/68, 26 September. Antonio, A. L., Carocho, M. Bento, A., Quintana, B., Botelho, M.L., Ferreira, I.C.F.R. (2012). Effects of gamma radiation on the biological, physico-chemical, nutritional and antioxidant parameters of chestnuts - A review. Food and Chemical Toxicology 50 (9), pp. 3234-3242.por
dc.description.abstractFood irradiation is an industrial process used for several purposes: decontamination, sterilization, disinfestation or to increase products shelf-life. In chestnut fruits, irradiation appears as possible alternative for quarantine post-harvest treatment, due to recently being prohibited the use of methyl bromide, a toxic agent for the operators and for the environment [UNEP, 1995; EU, 2008]; The use of this technology is regulated by national and international food safety authorities, concerning the type of radiation used and, mainly, the dose applied to the product. The typical recommended doses for food processing are lower than 10 kGy but each product, due to its particular characteristics and inhomogeneities, must be submitted to a validation process. Chestnut fruits irradiation studies were done mainly in Asian varieties and only recently in European varieties (Castanea sativa Mill.) [Antonio et al., 2012]. Computed Tomography (CT) images are currently used to give support to clinical dosimetry for a better planning in radiotherapy. In this preliminary study we used CT images to characterize the density of the inhomogeneous fruit and to validate the effective dose in irradiated chestnuts. The absorbed dose was measured in “fruits phantoms” using two types of dosimeters, a reference dosimeter, Fricke solution, and a routine dosimeter, Amber Perspex. We present the densities for outer shell, inner skin, and fruits flesh, obtained from the CT images, and compare the results of the two dosimetric systems. Using these procedures, we could conclude that the absorbed doses are well characterized and guarantee that the dose validation in an irradiation process respects the recommended food irradiation regulations. REFERENCES UNEP, 1995. Montreal protocol on substances that deplete the ozone layer.por
dc.description.sponsorshipON.2/QREN/EU Project nº 13198/2010 for financial support; FCT grant to A. L. Antonio, SFRH/PROTEC/67398/2010. Dr. Carlos Vaz, General Director of Centro Hospitalar de Trás-os-Montes e Alto Douro - Vila Real, for allowing CT images.por
dc.identifier.citationAntonio, Amilcar L.; Trindade, Mauro; Bento, Albino; Botelho, M. Luisa; Quintana, Begoña (2012). Computed tomography images to assess the dose in irradiated chestnut fruits. In Multiphysics'2012. Lisboapor
dc.identifier.urihttp://hdl.handle.net/10198/8184
dc.language.isoengpor
dc.peerreviewedyespor
dc.subjectFood irradiationpor
dc.subjectChestnut fruitspor
dc.subjectComputed tomographypor
dc.subjectDosimetrypor
dc.titleComputed tomography images to assess the dose in irradiated chestnut fruitspor
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlace13-14 Dezembro, Lisboa, Portugalpor
oaire.citation.titleMultiphysics'2012por
person.familyNameAntonio
person.familyNameBento
person.givenNameAmilcar L.
person.givenNameAlbino
person.identifier.ciencia-id1014-5259-DE86
person.identifier.ciencia-idD516-325A-9AD7
person.identifier.orcid0000-0001-8271-9964
person.identifier.orcid0000-0001-5215-785X
person.identifier.ridJ-1960-2014
person.identifier.ridN-9706-2016
person.identifier.scopus-author-id44560921900
person.identifier.scopus-author-id35247694000
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
relation.isAuthorOfPublication4b23e496-8d11-4ff5-a8ec-e1c2235e5a28
relation.isAuthorOfPublication233115be-9d46-49d0-8b7d-2d64406d64a0
relation.isAuthorOfPublication.latestForDiscovery233115be-9d46-49d0-8b7d-2d64406d64a0

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