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How does irradiation affect bioactive compounds of watercress?

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dc.contributor.authorPinela, José
dc.contributor.authorBarros, Lillian
dc.contributor.authorBarreira, João C.M.
dc.contributor.authorCabo Verde, Sandra
dc.contributor.authorAntonio, Amilcar L.
dc.contributor.authorCarvalho, Ana Maria
dc.contributor.authorOliveira, Beatriz
dc.contributor.authorSantos-Buelga, Celestino
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2018-09-13T09:50:29Z
dc.date.available2018-09-13T09:50:29Z
dc.date.issued2018
dc.description.abstractReady-to-eat vegetables have become more popular in consumers’ market baskets due to their convenience and health benefits [1]. The growth of this sector has promoted the introduction of new foods and the adoption of more efficient and eco-friendly postharvest technologies such as irradiation. However, a common consumer concern is whether irradiation adversely affects the nutritional value of food. In this sense, the suitability of post-packaging irradiation for preserving bioactive compounds of watercress (Nasturtium officinale R. Br.) during cold storage was evaluated. Watercress samples gathered in the Northeastern region of Portugal were hand-picked and rinsed in tap water. A portion was immediately analyzed (fresh control) and the remaining fresh material was packaged in polyethylene bags, irradiated at doses up to 5 kGy in a Co-60 experimental chamber, and stored at 4 ºC for 7 d. A non-irradiated control followed the experiment. Tocopherols and phenolic compounds were analyzed by chromatographic techniques and the antioxidant activity was evaluated using four in vitro assays [2,3]. In general, flavonoids predominated over phenolic acids. The 5 kGy dose preserved the amounts of total phenolic acids and phenolic compounds and increased the levels of p-coumaric acid (the most abundant compound). These samples also had higher levels of total tocopherols; increase that can be related to plant defense mechanisms. However, both groups of compounds were adversely affected by 2 kGy. Furthermore, flavonoids correlated well with antioxidant properties.pt_PT
dc.description.sponsorshipto FCT (Portugal) and FEDER under Programme PT2020 for financial support to CIMO (UID/AGR/00690/2013), REQUIMTE/LAQV (UID/QUI/50006/2013- POCI/01/0145/FEDER/007265), C2TN (UID/Multi/04349/2013) and L. Barros research contract; to FEDER-Interreg España-Portugal programme for financial support through the project 0377_Iberphenol_6_E.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPinela, José; Barros, Lillian; Barreira, João C.M.; Cabo Verde, Sandra; Antonio, Amilcar L.; Carvalho, Ana Maria; Oliveira, M.B.P.P.; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R. (2018). How does irradiation affect bioactive compounds of watercress? In ISEAC‐40 International Conference on Environmental & Food Monitoring. Santiago de Compostela. ISBN 978‐84‐09‐03799‐5pt_PT
dc.identifier.isbn978‐84‐09‐03799‐5
dc.identifier.urihttp://hdl.handle.net/10198/17958
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectGamma irradiationpt_PT
dc.subjectWatercresspt_PT
dc.subjectBioactivespt_PT
dc.titleHow does irradiation affect bioactive compounds of watercress?pt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardNumberUID/QUI/50006/2013
oaire.awardNumberUID/Multi/04349/2013
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FQUI%2F50006%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMulti%2F04349%2F2013/PT
oaire.citation.conferencePlaceSantiago de Compostela, Espanhapt_PT
oaire.citation.titleISEAC‐40 International Conference on Environmental & Food Monitoringpt_PT
oaire.fundingStream5876
oaire.fundingStream5876
person.familyNamePinela
person.familyNameBarros
person.familyNameBarreira
person.familyNameAntonio
person.familyNameCarvalho
person.familyNameFerreira
person.givenNameJosé
person.givenNameLillian
person.givenNameJoão C.M.
person.givenNameAmilcar L.
person.givenNameAna Maria
person.givenNameIsabel C.F.R.
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person.identifier.ridB-4466-2014
person.identifier.ridJ-3600-2013
person.identifier.ridD-8269-2013
person.identifier.ridJ-1960-2014
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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.rightsopenAccesspt_PT
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