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Plant extracts as biocontrol agents against Aspergillus carbonarius growth and ochratoxin A production in grapes

2023Journal article Open access
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dc.contributor.authorChtioui, Wiem
dc.contributor.authorHeleno, Sandrina A.
dc.contributor.authorMigheli, Quirico
dc.contributor.authorRodrigues, Paula
dc.date.accessioned2023-11-06T11:02:04Z
dc.date.available2023-11-06T11:02:04Z
dc.date.issued2023
dc.description.abstractAspergillus carbonarius (Bainier) Thom. is an important pathogen and ochratoxin A (OTA) producer in grapes that can be controlled by adopting sustainable approaches. Here we evaluate the application of natural plant extracts as an alternative to synthetic fungicides to reduce OTA contamination and to prevent infection of grapes by two isolates of A. carbonarius. In a preliminary screening, natural extracts of chestnut flower, cistus, eucalyptus, fennel, and orange peel were evaluated for their antifungal and anti-mycotoxigenic efficiency in a grape-based medium at concentrations of 10 and 20 mg/mL. Cistus and orange peel extracts demonstrated the best anti- fungal activity at both concentrations. Although the eucalyptus extract demonstrated no significant effect on Aspergillus vegetative growth, it significantly reduced OTA by up to 85.75 % at 10 mg/mL compared to the control. Chestnut flower, cistus, eucalyptus, and orange peel extracts were then tested at the lowest concen- tration (10 mg/mL) for their antifungal activity in artificially inoculated grape berries. The cistus and orange peel extracts demonstrated the greatest antifungal activity and significantly reduced mold symptoms in grapes. Moreover, all tested natural extracts were able to reduce OTA content in grape berries (17.7 ± 8.3 % - 82.3 ± 3.85 % inhibition), although not always significantly. Eucalyptus extract was particularly efficient, inhibiting OTA production by both strains of A. carbonarius by up to >80 % with no effects on fungal growth. The use of natural eucalyptus extract represents a feasible strategy to reduce OTA formation without disrupting fungal growth, apparently maintaining the natural microbial balance, while cistus and orange peel extracts appear promising as inhibitors of A. carbonarius mycelial growth. Our findings suggest that plant extracts may be useful sources of bioactive chemicals for preventing A. carbonarius contamination and OTA production. Nonetheless, it will be necessary to evaluate their effect on the organoleptic properties of the grapes.pt_PT
dc.description.sponsorshipThis work was supported by the Foundation for Science and Tech- nology (FCT, Portugal) #1 under Grant from national funds FCT/MCTES (PIDDAC) to CIMO [number UIDB/00690/2020 and UIDP/00690/ 2020] and SusTEC [number LA/P/0007/2020]; the European Regional Development Fund (ERDF) through the Competitiveness and Interna- tionalization Operational Program (CIOP) #2 under Grant dedicated to the project “PreVineGrape - Development of a biofungicide to combat grapevine diseases [number POCI-01-0247-FEDER-049695].pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationChtioui, Wiem; Heleno, Sandrina A.; Migheli, Quirico; Rodrigues, Paula (2023). Plant extracts as biocontrol agents against Aspergillus carbonarius growth and ochratoxin A production in grapes. International Journal of Food Microbiology. ISSN 0168-1605. 407, p. 1-11pt_PT
dc.identifier.doi10.1016/j.ijfoodmicro.2023.110425pt_PT
dc.identifier.issn0168-1605
dc.identifier.urihttp://hdl.handle.net/10198/28868
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationMountain Research Center
dc.relationMountain Research Center
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectOTApt_PT
dc.subjectMycotoxinspt_PT
dc.subjectBiofungicidespt_PT
dc.subjectFood safetypt_PT
dc.subjectBioactivitypt_PT
dc.titlePlant extracts as biocontrol agents against Aspergillus carbonarius growth and ochratoxin A production in grapespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMountain Research Center
oaire.awardTitleMountain Research Center
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0007%2F2020/PT
oaire.citation.titleInternational Journal of Food Microbiologypt_PT
oaire.citation.volume407pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameHeleno
person.familyNameRodrigues
person.givenNameSandrina A.
person.givenNamePaula
person.identifier.ciencia-id8B18-3095-6FC9
person.identifier.ciencia-id2312-18AE-DA42
person.identifier.orcid0000-0001-7224-1098
person.identifier.orcid0000-0002-3789-2730
person.identifier.ridL-5951-2014
person.identifier.scopus-author-id30067731800
person.identifier.scopus-author-id7102639646
project.funder.identifierhttp://doi.org/10.13039/501100001871
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
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.embargofctThis work was supported by the Foundation for Science and Tech- nology (FCT, Portugal) #1 under Grant from national funds FCT/MCTES (PIDDAC) to CIMO [number UIDB/00690/2020 and UIDP/00690/2020] and SusTEC [number LA/P/0007/2020]; the European Regional Development Fund (ERDF) through the Competitiveness and Internationalization Operational Program (CIOP) #2 under Grant dedicated to the project “PreVineGrape - Development of a biofungicide to combat grapevine diseases [number POCI-01-0247-FEDER-049695].pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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