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Exploring the antimicrobial potential of Castanea sativa Mill. flowers and Eucalyptus globulus L. leaves against grape pathogens

2023Documento de conferência Acesso aberto
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datacite.subject.fosEngenharia e Tecnologia::Biotecnologia Industrial
datacite.subject.fosEngenharia e Tecnologia::Engenharia Química
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorMarx, Ítala
dc.contributor.authorArdohain, Elizandra
dc.contributor.authorRodrigues, Paula
dc.contributor.authorAfonso, Andreia
dc.contributor.authorOliveira, Izamara
dc.contributor.authorPires, Tânia C.S.P.
dc.contributor.authorCarocho, Márcio
dc.contributor.authorBarros, Lillian
dc.contributor.authorHeleno, Sandrina A.
dc.date.accessioned2026-05-13T10:10:47Z
dc.date.available2026-05-13T10:10:47Z
dc.date.issued2023
dc.description.abstractThe bioactive potential of chestnut (Castanea sativa Mill.) flowers and eucalyptus (Eucalyptus globulus L.) leaves, which are residual resources of the industry processing in northern and central Portugal, has been recognized [1,2]. Thus, the use of these by-products as sources of bioactive compounds would not only add value to plant materials but also contribute to environmental sustainability [1,3]. In this sense, the present study aimed to investigate the bioactive potential of chestnut flowers and eucalyptus leaves for the extraction of phenolic compounds with antimicrobial properties. The phenolic composition of cv. Longal C. sativa male flowers and E. globulus leaves was extracted and characterized using HPLC-DAD/ESI- MS. The antimicrobial potential of these extracts against food contaminants, including grape pathogens such as Botrytis cinerea, was evaluated using the microdilution method. Trigalloyl- HHDP-glucoside and digalloylglucose were identified as the major hydrolysable tannins in chestnut flowers and eucalyptus leaves, respectively. The phenolic distribution in plants extracts was 75% of hydrolysable tannins, and 25% of flavonoids for chestnut flowers, while for eucalyptus leaves, the phenolic profile was 74% of hydrolysable tannins, 15% of flavonoids, and in lower concentration, phenolic acids, corresponding to 11%. The extracts exhibited significant antimicrobial activity against the tested microorganisms and inhibited the growth of B. cinerea at a concentration of 10 mg/mL. Therefore, these by-products could serve as potential sources of antimicrobial compounds for use in the wine industry, providing a natural alternative to artificial antimicrobials and protecting grapes from B. cinerea infections. Finally, the use these extracts would not only add value to plant by-products but also contribute to environmental sustainability by reducing waste from the agro-industries.eng
dc.description.sponsorshipFoundation for Science and Technology (FCT, Portugal) for financial support through national funds FCT/MCTES to the CIMO (UIDB/00690/2020 and UIDP/00690/2020) and SusTEC (LA/P/0007/2021); S.A. Heleno and L. Barros also thank to the national funding by FCT through the institutional scientific employment program–contract for their contracts. FEDER through the North 2020 Regional Operational Program to the R&D project “PreVineGrape: Desenvolvimento de um biofungicida para combate a doenças da videira” (POCI-01- 0247-FEDER-049695) (NORTE-01-0247-FEDER- 113508).
dc.identifier.citationMarx, Ítala; Ardohain, Elizandra; Rodrigues, Paula; Afonso, Andreia; Oliveira, Izamara; Pires, Tânia; Carocho, Márcio; Barros, Lillian; Heleno, Sandrina A. (2023). Exploring the antimicrobial potential of Castanea sativa Mill. flowers and Eucalyptus globulus L. leaves against grape pathogens. In II International Congress on Science, Biodiversity and Sustainability. Brasil
dc.identifier.urihttp://hdl.handle.net/10198/36641
dc.language.isoeng
dc.peerreviewedyes
dc.relationMountain Research Center - UIDB/00690/2020
dc.relationLA/P/0007/2021
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectCastanea sativa Mill.
dc.subjectEucalyptus globulus L.
dc.subjectPlant extracts
dc.subjectPhenolic compounds
dc.subjectBotrytis cinerea
dc.subjectCircular economy
dc.titleExploring the antimicrobial potential of Castanea sativa Mill. flowers and Eucalyptus globulus L. leaves against grape pathogenseng
dc.typeconference object
dspace.entity.typePublication
oaire.awardNumberUIDB/00690/2020
oaire.awardTitleMountain Research Center - UIDB/00690/2020
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.citation.conferenceDate2023
oaire.citation.conferencePlaceUniversidade Federal de Minas Gerais, Brasil
oaire.citation.endPage313
oaire.citation.startPage313
oaire.citation.titleBook of abstracts of the II International Congress on Science, Biodiversity and Sustainability (SCIBIOSUS)
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameMarx
person.familyNameRodrigues
person.familyNameOliveira
person.familyNamePires
person.familyNameCarocho
person.familyNameBarros
person.familyNameHeleno
person.givenNameÍtala
person.givenNamePaula
person.givenNameIzamara
person.givenNameTânia C.S.P.
person.givenNameMárcio
person.givenNameLillian
person.givenNameSandrina A.
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person.identifier.orcid0000-0002-8978-4547
person.identifier.orcid0000-0002-9050-5189
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person.identifier.ridGLV-5485-2022
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project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
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