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Castanea sativa mill. flowers as a source of bioactive phenolic compounds

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dc.contributor.authorCarocho, Márcio
dc.contributor.authorBarros, Lillian
dc.contributor.authorBento, Albino
dc.contributor.authorSantos-Buelga, Celestino
dc.contributor.authorMorales, Patricia
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2015-10-29T10:08:13Z
dc.date.available2015-10-29T10:08:13Z
dc.date.issued2014
dc.description.abstractIn the Trás-os-Montes region of Portugal and across a good part of the Mediterranean countries, chestnut trees are a considerable part of the landscape. These trees and their respective nuts have been important in the past and are still a source of incomes for those regions. The chestnut tree and products, ·such as nuts, wood, leaves and flowers are known to possess a myriad of applications [1]. In particular, infusions and decoctions of chestnut flowers have been reported for different medical purposes [2], but their phytochemical profile and antioxidant activity are still mostly unknown. Herein, decoctions and infusions of flowers from the two most appreciated chestnut cultivars (longal and judia) in Trás-os-Montes, Portugal, were prepared and characterized with regard to their phenolic composition, which was analyzed by HPLC-DAD-ESI/MS. Furthermore, the antioxidant activity was assessed in terms of free radical scavenging capacity, reducing power and inhibition of lipid peroxidation in brain cell homogenates [2]. The individual polyphenol with the highest concentration in all samples was a trigalloyi-HHDP-glucoside, followed by pentagalloyl glucose, whereas quercetin 3-0-glucuronide and a quercetin hexoside were the most abundant flavonoids in judia and longal cultivars, respectively. The sample with the highest concentration of total polyphenols was the infusion of judia, closely followed by the decoction of longal. The preparations of the cultivar judia presented higher flavonoid levels than those of longal that in tern, displayed higher concentrations of hydrolyzable tannins. Decoctions showed greater antioxidant activity than infusions, which might be explained by the longer time at boiling point that decoctions were subjected to during extraction [2]. Overall, the decoction of the cultivar judia was the sample with both the highest quantity of flavonoids and antioxidant activity. The obtained results support ancestral claims about health benefits of infusions and decoctions of chestnut flowers. Moreover, due to the extremely potent antioxidant activity observed, flower decoctions are currently being tested for their potencial use as natural preservatives in food industry (research project PRODER n° 46577).pt_PT
dc.identifier.citationCarocho, Márcio; Barros, Lillian; Bento, Albino; Santos-Buelga, Celestino; Morales, Patricia; Ferreira, Isabel C.F.R. (2014). Castanea sativa mill. flowers as a source of bioactive phenolic compounds. In 8th ISANH World Congress on Polyphenols applications. Lisbon. ISBN 978-2-35609-073-7pt_PT
dc.identifier.isbn978-2-35609-073-7
dc.identifier.urihttp://hdl.handle.net/10198/12215
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationPRODER 46577- PlantLact
dc.relationStrategic Project - UI 690 - 2011-2012
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.titleCastanea sativa mill. flowers as a source of bioactive phenolic compoundspt_PT
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.title8th ISANH World Congress on Polyphenols applicationspt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameCarocho
person.familyNameBarros
person.familyNameBento
person.familyNameFerreira
person.givenNameMárcio
person.givenNameLillian
person.givenNameAlbino
person.givenNameIsabel C.F.R.
person.identifierawbWiiMAAAAJ&hl
person.identifier469085
person.identifier144781
person.identifier.ciencia-id5614-005B-5CF1
person.identifier.ciencia-id9616-35CB-D001
person.identifier.ciencia-idD516-325A-9AD7
person.identifier.ciencia-id9418-CF95-9919
person.identifier.orcid0000-0002-8978-4547
person.identifier.orcid0000-0002-9050-5189
person.identifier.orcid0000-0001-5215-785X
person.identifier.orcid0000-0003-4910-4882
person.identifier.ridJ-3600-2013
person.identifier.ridN-9706-2016
person.identifier.ridE-8500-2013
person.identifier.scopus-author-id52463229800
person.identifier.scopus-author-id35236343600
person.identifier.scopus-author-id35247694000
person.identifier.scopus-author-id36868826600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublication46b39e1f-2674-4be1-a96a-c2e5792e6979
relation.isAuthorOfPublication3af07ffe-f914-48ba-a5d5-efcf70fdce01
relation.isAuthorOfPublication233115be-9d46-49d0-8b7d-2d64406d64a0
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