Disposable p-coumaric acid sensor containing reduced graphene oxide, nickel nanoparticles and biodegradable molecularly imprinted polymer for fruit peel analysis

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dc.contributor.authorBuffon, Edervaldo [UNESP]
dc.contributor.authorStradiotto, Nelson Ramos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T16:04:35Z
dc.date.available2023-07-29T16:04:35Z
dc.date.issued2023-05-01
dc.description.abstractThis work reports the development of a disposable molecularly imprinted electrochemical sensor based on the electropolymerization of 3-indoleacetic acid on an electrode containing reduced graphene oxide and nickel nanoparticles for the sensitive and selective detection of p-coumaric acid. The molecularly imprinted sensor was characterized by cyclic voltammetry, electrochemical impedance spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. The obtained results showed that reduced graphene oxide and nickel nanoparticles increased the sensitivity of the sensor for selective recognition of p-coumaric acid. Under optimal conditions, the developed sensor presented linear concentration ranges from 1.0 × 10−10 to 1.0 × 10−8 mol L−1. The detection and quantification limits calculated for this sensor were 8.1 × 10−11 and 2.7 × 10−10 mol L−1, respectively. The proposed device exhibited excellent selectivity, repeatability and stability over time, as well as good accuracy for the detection of p-coumaric acid. As a proof of concept, the sensor was applied for the determination of this molecule in banana and orange peels. The mean recovery values obtained during the analyses ranged from 96% to 102%, with relative standard deviations of ≤ 4.8%.en
dc.description.affiliationInstitute of Chemistry São Paulo State University (UNESP), São Paulo
dc.description.affiliationBioenergy Research Institute São Paulo State University (UNESP), São Paulo
dc.description.affiliationUnespInstitute of Chemistry São Paulo State University (UNESP), São Paulo
dc.description.affiliationUnespBioenergy Research Institute São Paulo State University (UNESP), São Paulo
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: #2017/22401-8
dc.description.sponsorshipIdFAPESP: #2019/13818-8
dc.identifierhttp://dx.doi.org/10.1016/j.jfca.2023.105186
dc.identifier.citationJournal of Food Composition and Analysis, v. 118.
dc.identifier.doi10.1016/j.jfca.2023.105186
dc.identifier.issn0889-1575
dc.identifier.scopus2-s2.0-85147114462
dc.identifier.urihttp://hdl.handle.net/11449/249617
dc.language.isoeng
dc.relation.ispartofJournal of Food Composition and Analysis
dc.sourceScopus
dc.subject3-Indoleacetic acid
dc.subjectDisposable molecularly imprinted electrochemical sensor
dc.subjectFruit peels
dc.subjectNickel nanoparticles
dc.subjectp-Coumaric acid
dc.subjectReduced graphene oxide
dc.titleDisposable p-coumaric acid sensor containing reduced graphene oxide, nickel nanoparticles and biodegradable molecularly imprinted polymer for fruit peel analysisen
dc.typeArtigo
unesp.author.orcid0000-0003-0981-5065 0000-0003-0981-5065[1]

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Artigos - Química Analítica - IQ