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Effects of gamma and electron-beam irradiation on the antioxidant potential of Melissa officinalis L. infusions

2014Conference object Open access
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dc.contributor.authorPereira, Eliana
dc.contributor.authorBarros, Lillian
dc.contributor.authorAntonio, Amilcar L.
dc.contributor.authorRafalski, Andrzej
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2014-11-19T09:42:56Z
dc.date.available2014-11-19T09:42:56Z
dc.date.issued2014
dc.description.abstractGamma and electron beam irradiation are two processes authorized for food processing, characterized as technically and economically feasible procedures, and safe, with a powerful antimicrobial effect. These decontamination methods have advantages that are increasingly attracting the market and present a good alternative to other methods [1,2]. In this work, the effects of gamma irradiation and electron beam on antioxidant activity of Melissa officinalis L., were evaluated. Infusions were prepared from non-irradiated and irradiated samples (1 and 10 kGy), and their radical scavenging activity, reducing power and inhibition of lipid peroxidation were assessed. According to the results obtained, it was concluded that in samples exposed to gamma irradiation, the highest antioxidant potential was displayed by the infusions prepared from the samples irradiated at 1 kGy, as well as the highest concentration of phenols and flavonoids. Regarding the samples exposed to electron beam irradiation, the mentioned effects were not so evident and, in most of the cases, no changes were observed among non-irradiated and irradiated samples. Overall, irradiation might represent a suitable solution for M. officinalis postharvest treatment, since the use of irradiation did not interfere with its antioxidant properties, and gamma irradiation at 1 kGy even improved some of the antioxidant potential, preserving the bioactive compounds that confer health beneficial effects.por
dc.description.sponsorshipFCT, Portugal for financial support to CIMO (strategic project PEst· OE/ AGR/ UI0690/2011) and to L. Barros ("Compromisso para a Ciencia 2008" contract). The authors are also grateful to "MaisErvas - Aromaticas e Medicinais" company for supplying the samplespor
dc.identifier.citationPereira, Eliana; Barros, Lillian; Antonio, Amilcar L.; Rafalski, Andrzej; Ferreira, Isabel C.F.R. (2014). Effects of gamma and electron-beam irradiation on the antioxidant potential of Melissa officinalis L. Infusions. In NUTECH 2014 - Development and Applications of Nuclear Technologies. Varsóvia, Polónia. ISBN 978-83-933935-2-7por
dc.identifier.isbn978-83-933935-2-7
dc.identifier.urihttp://hdl.handle.net/10198/11399
dc.language.isoengpor
dc.peerreviewedyespor
dc.relationPEst-OE/AGR/ UI0690/2011
dc.subjectMelissa officinalispor
dc.subjectGamma irradiationpor
dc.subjectE-beam irradiationpor
dc.subjectAntioxidant potentialpor
dc.titleEffects of gamma and electron-beam irradiation on the antioxidant potential of Melissa officinalis L. infusionspor
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceVarsóvia, Polóniapor
oaire.citation.titleNUTECH 2014 - Development and Applications of Nuclear Technologiespor
person.familyNamePereira
person.familyNameBarros
person.familyNameAntonio
person.familyNameFerreira
person.givenNameEliana
person.givenNameLillian
person.givenNameAmilcar L.
person.givenNameIsabel C.F.R.
person.identifier469085
person.identifier144781
person.identifier.ciencia-idBE17-462D-9A75
person.identifier.ciencia-id9616-35CB-D001
person.identifier.ciencia-id1014-5259-DE86
person.identifier.ciencia-id9418-CF95-9919
person.identifier.orcid0000-0003-2854-6745
person.identifier.orcid0000-0002-9050-5189
person.identifier.orcid0000-0001-8271-9964
person.identifier.orcid0000-0003-4910-4882
person.identifier.ridQ-8017-2018
person.identifier.ridJ-3600-2013
person.identifier.ridJ-1960-2014
person.identifier.ridE-8500-2013
person.identifier.scopus-author-id55938912300
person.identifier.scopus-author-id35236343600
person.identifier.scopus-author-id44560921900
person.identifier.scopus-author-id36868826600
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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