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Evaluation of antioxidant activity of Tropaeolum majus L. flowers processed by ionizing radiation

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dc.contributor.authorKoike, Amanda
dc.contributor.authorPereira, Eliana
dc.contributor.authorAntonio, Amilcar L.
dc.contributor.authorBarreira, João C.M.
dc.contributor.authorVillavicencio, Anna L.C.H.
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2015-02-24T09:49:18Z
dc.date.available2015-02-24T09:49:18Z
dc.date.issued2014
dc.description.abstractEdible flowers can be used to add flavor, taste, color and visual appeal to culinary preparations. Nasturium flowers (Tropaeolum majus L.) are used as an ingredient in culinary preparations namely, salads, crepes and pancakes[1]. Moreover, due to their antioxidant properties and bioactive components, edible flowers might be considered as healthy ingredients. Nevertheless, these flowers are highly perishable products and must be free from insect pests, which may represent a challenge since these species must grow without using any chemical pesticides [2]. Irradiation is a method that can be used for food disinfestation, in order to extend the shelf life of perishable products, improving their hygienic quality and food safety [3]. In fact, food irradiation has been pointed out as a good alternative to replace chemical fumigation of food matrices, including edible flowers [4]. The purpose of this study is to evaluate the antioxidant activity of T. majus flowers submitted to gamma and electron beam irradiation at 0, 0.5, 0.8 and 1.0 kGy. The antioxidant properties were evaluated through 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity, reducing power and β-carotene bleaching inhibition assays. A statistical analysis using 2-way ANOVA (general linear model) showed that the flowers processed with gamma irradiation presented the highest reducing power (independently of the dose used). Furthermore, the 1 kGy dose was the most adequate for β-carotene bleaching inhibition (independently of the source of irradiation used). Overall, ionizing radiation can be an alternative to ensure antioxidant properties of edible flowers.por
dc.description.sponsorshipWe are thankful to CNEN, CAPES, CNPq and IPEN-CNEN/SP for financial support to A.Koike. This research is included in a Bilateral action FCT-CNPq, Portugal/Brazil 2014por
dc.identifier.citationKoike, Amanda; Pereira, Eliana; Antonio, Amilcar L.; Barreira, João C.M.; Villavicencio, Anna L.C.H.; Ferreira, Isabel C.F.R. (2014). Evaluation of antioxidant activity of Tropaeolum majus L. flowers processed by ionizing radiation. In International Symposium on Food Safety and Quality: Applications of Nuclear and Related Techniques. Vienapor
dc.identifier.urihttp://hdl.handle.net/10198/11689
dc.language.isoporpor
dc.peerreviewedyespor
dc.publisherIAEA - International Atomic Energy Agencypor
dc.subjectEdible flowerspor
dc.subjectTropaeolum majus L.por
dc.subjectIrradiationpor
dc.subjectAntioxidant activitypor
dc.titleEvaluation of antioxidant activity of Tropaeolum majus L. flowers processed by ionizing radiationpor
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceViena, Áustriapor
oaire.citation.titleInternational Symposium on Food Safety and Quality: Applications of Nuclear and Related Techniquespor
person.familyNamePereira
person.familyNameAntonio
person.familyNameBarreira
person.familyNameFerreira
person.givenNameEliana
person.givenNameAmilcar L.
person.givenNameJoão C.M.
person.givenNameIsabel C.F.R.
person.identifier144781
person.identifier.ciencia-idBE17-462D-9A75
person.identifier.ciencia-id1014-5259-DE86
person.identifier.ciencia-id9418-CF95-9919
person.identifier.orcid0000-0003-2854-6745
person.identifier.orcid0000-0001-8271-9964
person.identifier.orcid0000-0003-1233-0990
person.identifier.orcid0000-0003-4910-4882
person.identifier.ridQ-8017-2018
person.identifier.ridJ-1960-2014
person.identifier.ridD-8269-2013
person.identifier.ridE-8500-2013
person.identifier.scopus-author-id55938912300
person.identifier.scopus-author-id44560921900
person.identifier.scopus-author-id54895546900
person.identifier.scopus-author-id36868826600
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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