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Antibacterial application of natural and carboxymethylated cashew gum-based silver nanoparticles produced by microwave-assisted synthesis

2020Journal article Restricted access
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dc.contributor.authorAraruna, Felipe Bastos
dc.contributor.authorde Oliveira, Taiane Maria
dc.contributor.authorQuelemes, Patrick Veras
dc.contributor.authorde Araújo Nobre, Alyne Rodrigues
dc.contributor.authorPlácido, Alexandra
dc.contributor.authorVasconcelos, Andreanne Gomes
dc.contributor.authorde Paula, Regina Célia Monteiro
dc.contributor.authorMafud, Ana Carolina
dc.contributor.authorde Almeida, Miguel Peixoto
dc.contributor.authorDelerue-Matos, Cristina
dc.contributor.authorMascarenhas, Yvonne Primerano
dc.contributor.authorEaton, Peter
dc.contributor.authorde Souza de Almeida Leite, José Roberto
dc.contributor.authorda Silva, Durcilene Alves
dc.date.accessioned2022-05-16T16:07:51Z
dc.date.available2022-05-16T16:07:51Z
dc.date.issued2020
dc.description© 2019 Published by Elsevier Ltd.pt_PT
dc.description.abstractThis study presents a green synthesis route to silver nanoparticles (AgNPs) stabilized with cashew gum (CG) or carboxymethylated cashew gum (CCG) using microwave-assisted synthesis and evaluates their antibacterial activity. The antimicrobial activity was measured by determining the minimum inhibitory concentration (MIC) with Staphylococcus aureus and Escherichia coli. In both cases of the presence of CG and CCG, it was found that higher pH lead to more efficient conversion of silver nitrate to AgNPs with well dispersed, spherical and stable particles as well as low crystallinity. CCG-capped AgNPs were slightly smaller (137.0 and 96.3 nm) than those coated with non-modified gum (144.7 and 100.9 nm). The samples presented promising antibacterial activity, especially on Gram-negative bacteria, resulting in significant membrane damage on treated bacteria in comparison to the untreated control, observed by atomic force microscopy. Thus, a quick and efficient synthesis route was applied to produce CGAgNPs and CCGAgNPs with antimicrobial potential.pt_PT
dc.description.sponsorshipThe authors gratefully acknowledge financial support from CAPES and FAPEPI; ACM are grateful to FAPESP (2014/02282-6 AND 2016/18023-5). YPM is grateful to CAPES (AUX-PERM-705/2009). The authors also acknowledge the CNPq and Capes for scholarship and financial aid. The authors are grateful to Fundação para a Ciência e a Tecnologia (MCTES funds) and European Union (European Social Fund and European Regional Development Fund), for financial support through project UID/QUI/50006/2013–POCI-01-0145-FEDER-007265 (LAQV-REQUIMTE), in the context of the COMPETE program from QREN, project NORTE-01-0145-FEDER-000011, in the context of the NORTE 2020 program, and fellowships SFRH/BD/97995/2013 (AP) and SFRH/BD/95983/2013 (MPdA), in the context of the POCH program, both from Portugal 2020 partnership agreement.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCarbohydr Polym. 2020 Aug 1;241:115260pt_PT
dc.identifier.doi10.1016/j.carbpol.2019.115260pt_PT
dc.identifier.eissn1879-1344
dc.identifier.issn0144-8617
dc.identifier.urihttp://hdl.handle.net/10451/53015
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationPOCI-01-0145-FEDER-007265pt_PT
dc.relationAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
dc.relationRASTREABILIDADE DE ORGANISMOS GENETICAMENTE MODIFICADOS NA CADEIA ALIMENTAR: DESENVOLVIMENTO DE GENOSSENSORES COMO NOVAS ABORDAGENS PARA A SUA DETEÇÃO. alterado para “Traceability of genetically modified organisms in the food chain: Development of biosensing devices as new approaches for their detection”
dc.relationBionanoconjugados de nanopartículas de ouro e de prata para biossensores.
dc.relation.publisherversionhttps://www.sciencedirect.com/journal/carbohydrate-polymerspt_PT
dc.subjectCashew gumpt_PT
dc.subjectCarboxymethylationpt_PT
dc.subjectMicrowavept_PT
dc.subjectSilver nanoparticlespt_PT
dc.subjectAntimicrobialpt_PT
dc.titleAntibacterial application of natural and carboxymethylated cashew gum-based silver nanoparticles produced by microwave-assisted synthesispt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
oaire.awardTitleRASTREABILIDADE DE ORGANISMOS GENETICAMENTE MODIFICADOS NA CADEIA ALIMENTAR: DESENVOLVIMENTO DE GENOSSENSORES COMO NOVAS ABORDAGENS PARA A SUA DETEÇÃO. alterado para “Traceability of genetically modified organisms in the food chain: Development of biosensing devices as new approaches for their detection”
oaire.awardTitleBionanoconjugados de nanopartículas de ouro e de prata para biossensores.
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FQUI%2F50006%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/FARH/SFRH%2FBD%2F97995%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/FARH/SFRH%2FBD%2F95983%2F2013/PT
oaire.citation.titleCarbohydrate Polymerspt_PT
oaire.citation.volume241pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamFARH
oaire.fundingStreamFARH
person.familyNameEaton
person.givenNamePeter
person.identifier.ciencia-idE518-41E3-0D1D
person.identifier.orcid0000-0003-1821-1992
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.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscovery30dfb5ea-6965-4240-a564-6ae9527e3170
relation.isProjectOfPublicationaa8b3074-f0d3-4734-80d5-ed2d3bb57298
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