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Effects of gamma irradiation on the phenolic compounds of Ginkgo biloba L.

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dc.contributor.authorPereira, Eliana
dc.contributor.authorBarros, Lillian
dc.contributor.authorAntonio, Amilcar L.
dc.contributor.authorCabo Verde, Sandra
dc.contributor.authorSantos-Buelga, Celestino
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2015-06-26T09:23:19Z
dc.date.available2015-06-26T09:23:19Z
dc.date.issued2015
dc.description.abstractIrradiation has been increasingly recognized as an effective decontamination technique that ensures the chemical and organoleptic quality of medicinal and aromatic plants |1,2|. One of those plants that has been highly studied is Ginkgo biloba L., due to its use in traditional medicine, but also by professionals in the medical field in order to treat problems typically associated with aging, such as intermittent claudication, decreased mental vitality in old age (mental confusion, memory loss, dementia praecox, concentration problems), poor circulation and tinnitus |3|. The aim of the present study was to evaluate the effects of gamma irradiation in the bioactive compounds of G. biloba (infusion and methanol/water extract), widely used in traditional medicine and in dietary supplements. Twenty-five compounds were detected, eighteen of which were flavonoids, one phenolic acid, five terpene lactones and one unknown compound. Among the quantified phenolic compounds, flavonoids were the main group present, being two kaempferol derivatives the major compounds found: kaempferol-3-O-dirhamnosylglucoside and kaempferol-3-O-rutinoside. Kaempferol-3-O-dirhamnosylglucoside was the most abundant compound in all the infusion preparations and in the methanol/water extract irradiated at 1 kGy, whereas kaempferol-3-O-rutinoside was the most abundant one in the control and irradiated at 10 kGy methanol/water extracts. Protocatechuic acid was the only phenolic acid identified and the quantities present were in the same range as the major flavonoids. The irradiation with the highest dose (10 kGy) is sufficient to guarantee the product disinfestation and microbial decontamination, also contributing to an increase in the extractability of phenolic compounds, both in methanol/water and infusion preparations.por
dc.description.sponsorshipThe authors are grateful to project ProDer AROMAP for financial support and for E. Pereira grant, also to Fundação para a Ciência e a Tecnologia (FCT, Portugal) for CIMO strategic project (PEst-OE/AGR/UI0690/2011). L. Barros thanks “Compromisso para a Ciência 2008” for her contract. The authors are also grateful to Mrs. Clarinda Paixão, from “Américo Duarte Paixão Lda”, for samples providing.por
dc.identifier.citationPereira, Eliana; Barros, Lillian; Antonio, Amilcar L.; Cabo Verde, Sandra; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R. (2015). Effects of gamma irradiation on the phenolic compounds of Ginkgo biloba L. In RAD - International Conference on Radiation Applications. Budva, Montenegro. ISBN 978-86-80300-00-9por
dc.identifier.isbn978-86-80300-00-9
dc.identifier.urihttp://hdl.handle.net/10198/11911
dc.language.isoengpor
dc.peerreviewedyespor
dc.relationStrategic Project - UI 690 - 2011-2012
dc.relation.publisherversionhttp://www.rad-conference.org/proceedings.phppor
dc.subjectGamma irradiationpor
dc.subjectAromatic plantspor
dc.subjectGinkgo biloba L.por
dc.subjectPhenolicspor
dc.titleEffects of gamma irradiation on the phenolic compounds of Ginkgo biloba L.por
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleStrategic Project - UI 690 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FAGR%2FUI0690%2F2011/PT
oaire.citation.conferencePlaceBudva, Montenegropor
oaire.citation.endPage4por
oaire.citation.startPage4por
oaire.citation.titleRAD - International Conference on Radiation Applicationspor
oaire.fundingStream6817 - DCRRNI ID
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
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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