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Gamma irradiation preserves palmitoleic acid, a bioactive omega-7 unsaturated fatty acid, in Macrolepiota procera fresh samples

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dc.contributor.authorFernandes, Ângela
dc.contributor.authorAntonio, Amilcar L.
dc.contributor.authorOliveira, Beatriz
dc.contributor.authorMartins, Anabela
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2013-09-09T15:35:36Z
dc.date.available2013-09-09T15:35:36Z
dc.date.issued2013
dc.description.abstractObesity is a growing problem around the world, representing a metabolic disorder that is associated with many severe lifestyles related diseases including card iovascular disease, diabetes, hypertension, hyperlipidemia, and hyperuricemia [1]. Omega-? palmitoleic acid is a natural component found mainly in vegetables, nuts, and seeds. Studies have demonstrated that monounsaturated fatty acids suppressed appetite and short-term food intake in overweight subjects (1]. In particular, palmitoleic acid (or a diet rich in palmitoleic acid} may favorably influence glucose and lipid metabolism [2]. Wild mushrooms are excellent to be included in low caloric diets, presenting higher levels of unsaturated fatty acids than saturated ones (3]. Nevertheless, mushrooms are perishable and have to be processed for extended shelf-life; gamma irradiation has been applied to extend the postharvest of fresh mushrooms, alternatively to freezing or drying [4]. In tile present work, freezing and oven-drying were selected and applied separately and combined with gamma irradiation to Macrolepiota procera wild samples, in order to evaluate the effects on the content and profile of fatty acids. After collection (Bragan~a . Northeastern Portugal}, fresh (kept at 42C}, frozen (kept at -202C in a freezer} and dried (at 30 2C in an oven} fruiting bodies were submitted to gamma irradiation, performed in experimental equipment with four 6°Co sources, at 0.5 and 1 kGy.Fatty acids were analyzed by gaschromatography coupled to flame ionization detection (GC-FID). For instance, myristic acid, palmitoleic acid and araquidic acid were lower in samples submitted to freeze conservation. Palmitoleic acid is a good example of the inte raction among processing technologies and gamma irradiation doses; the 0.5 kGy dose minimized tile amount of palmitoleic acid when combined with freeze treatment, but the same dose maximized the amount of palmitoleic acid in fresh samples.Gamma irradiation was the processing technology with the highest capacity to retain the fatty acids profile presented by fresh samples, indicating its high potential to be developed as an alternative conservation methodology.por
dc.description.sponsorshipFCT and COMPETE/OREN/UE- strategic projects PEstOE/AGR/UI0690/2011 (CIMO} and PEst-C/EQB/LA0006/2011 (REOUIMTE), and PhD grant to A. Fernandes (SFRH/BD/76019/2011).por
dc.identifier.citationFernandes, Ângela; Antonio, Amilcar L.; Oliveira, M. Beatriz P.P.; Martins, Anabela; Ferreira, Isabel C.F.R. (2013). Gamma irradiation preserves palmitoleic acid, a bioactive omega-7 unsaturated fatty acid, in Macrolepiota procera fresh samples. In 1st Symposium on Medicinal Chemistry. Bragapor
dc.identifier.urihttp://hdl.handle.net/10198/8693
dc.language.isoengpor
dc.peerreviewedyespor
dc.relationStrategic Project - UI 690 - 2011-2012
dc.relationStrategic Project - LA 6 - 2011-2012
dc.titleGamma irradiation preserves palmitoleic acid, a bioactive omega-7 unsaturated fatty acid, in Macrolepiota procera fresh samplespor
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleStrategic Project - UI 690 - 2011-2012
oaire.awardTitleStrategic Project - LA 6 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FAGR%2FUI0690%2F2011/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6820 - DCRRNI ID/PEst-C%2FEQB%2FLA0006%2F2011/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F76019%2F2011/PT
oaire.citation.conferencePlaceBraga, Portugalpor
oaire.citation.title1st Symposium on Medicinal Chemistry of University of Minhopor
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6820 - DCRRNI ID
oaire.fundingStreamSFRH
person.familyNameFernandes
person.familyNameAntonio
person.familyNameMartins
person.familyNameFerreira
person.givenNameÂngela
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.orcid0000-0001-8271-9964
person.identifier.orcid0000-0001-6218-4413
person.identifier.orcid0000-0003-4910-4882
person.identifier.ridJ-1960-2014
person.identifier.ridG-5488-2013
person.identifier.ridE-8500-2013
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.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.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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