A novel core@shell magnetic molecular imprinted nanoparticles for selective determination of folic acid in different food samples

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dc.contributor.authorHussain, Sajjad [UNESP]
dc.contributor.authorKhan, Sabir [UNESP]
dc.contributor.authorGul, Saima
dc.contributor.authorPividori, Maria Isabel
dc.contributor.authorDel Pilar Taboada Sotomayor, Maria [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionGIK Institute of Engineering Sciences and Technology
dc.contributor.institutionUniversitat Autònoma de Barcelona (UAB)
dc.date.accessioned2018-12-11T17:04:27Z
dc.date.available2018-12-11T17:04:27Z
dc.date.issued2016-09-01
dc.description.abstractIn this work, magnetic molecularly imprinted polymers (MMIPs) were synthesized and tested for the determination of folic acid (FA) in different food samples. The MMIPs were polymerized at the surface of Fe3O4@SiO2 magnetic nanoparticles (MNPs) using acrylonitrile (functional monomer), ethylene glycol dimethacrylate (EGDMA) as cross-linking agent and azobiisobutyronitrile (AIBN) as an radical initiator. The morphological, topological and chemical characteristics of the MMIPs were investigated by field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM) and Fourier transform infrared (FTIR) techniques. The physico-chemical characterization, such as adsorption capacities and selectivity of MMIPs was investigated and compared with the respective MNIPs. The adsorption experimental data demonstrate that maximum adsorption capacity of MMIP at equilibrium was 8 mg g− 1 and than the adsorption process of FA over MMIPs follows Freundlich adsorption isotherm model and pseudo-first-order reaction kinetic. For evaluation of this new proposed material, the recovery studies were carried out in spiked samples at different concentration levels and the obtained values were in the range of 95–104% for orange and for spinach the recoveries were between 99.5 and 102.5%. The relative standard deviations (RSD) for the recoveries were < 0.5% for both samples. These results demonstrate that this novel MMIP material can be efficiently used for the selective extraction of folic acid from different food complex matrices.en
dc.description.affiliationDepartment of Analytical Chemistry Institute of Chemistry State University of São Paulo (UNESP)
dc.description.affiliationFaculty of Material and Chemical Engineering GIK Institute of Engineering Sciences and Technology, Topi
dc.description.affiliationDepartment of Chemistry University of Swabi for Woman Gulo-Deri, Swabi
dc.description.affiliationGroup de Sensors i Biosensors Departament de Química Universitat Autònoma de Barcelona (UAB), Bellaterra
dc.description.affiliationUnespDepartment of Analytical Chemistry Institute of Chemistry State University of São Paulo (UNESP)
dc.format.extent51-56
dc.identifierhttp://dx.doi.org/10.1016/j.reactfunctpolym.2016.07.011
dc.identifier.citationReactive and Functional Polymers, v. 106, p. 51-56.
dc.identifier.doi10.1016/j.reactfunctpolym.2016.07.011
dc.identifier.file2-s2.0-84979221743.pdf
dc.identifier.issn1381-5148
dc.identifier.scopus2-s2.0-84979221743
dc.identifier.urihttp://hdl.handle.net/11449/173279
dc.language.isoeng
dc.relation.ispartofReactive and Functional Polymers
dc.relation.ispartofsjr0,834
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectFolic acid
dc.subjectFood
dc.subjectMagnetic nanoparticles
dc.subjectMolecularly imprinted polymer
dc.titleA novel core@shell magnetic molecular imprinted nanoparticles for selective determination of folic acid in different food samplesen
dc.typeArtigo
unesp.author.orcid0000-0002-6173-7888[5]

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