Electrochemical microfluidic immunosensor with graphene-decorated gold nanoporous for T-2 mycotoxin detection.
Autor: | Fernandez Solis LN; Universidad Nacional de San Luis, Facultad de Química, Bioquímica y Farmacia, Instituto de Química de San Luis, INQUISAL (UNSL - CONICET), Chacabuco 917, D5700BWS, San Luis, Argentina., Silva Junior GJ; LSEME. Laboratório de Sensores Eletroquímicos e Métodos Eletroanalíticos. Institute of Chemistry, University of São Paulo, Av. Professor Lineu Prestes, 748, 05513-970, São Paulo - SP, Brazil., Bertotti M; LSEME. Laboratório de Sensores Eletroquímicos e Métodos Eletroanalíticos. Institute of Chemistry, University of São Paulo, Av. Professor Lineu Prestes, 748, 05513-970, São Paulo - SP, Brazil., Angnes L; Laboratório de Automação e Instrumentação Analítica, Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Professor Lineu Prestes 748, 05508-000, São Paulo, Brazil., Pereira SV; Universidad Nacional de San Luis, Facultad de Química, Bioquímica y Farmacia, Instituto de Química de San Luis, INQUISAL (UNSL - CONICET), Chacabuco 917, D5700BWS, San Luis, Argentina., Fernández-Baldo MA; Universidad Nacional de San Luis, Facultad de Química, Bioquímica y Farmacia, Instituto de Química de San Luis, INQUISAL (UNSL - CONICET), Chacabuco 917, D5700BWS, San Luis, Argentina. Electronic address: mbaldo@unsl.edu.ar., Regiart M; Universidad Nacional de San Luis, Facultad de Química, Bioquímica y Farmacia, Instituto de Química de San Luis, INQUISAL (UNSL - CONICET), Chacabuco 917, D5700BWS, San Luis, Argentina. Electronic address: mregiart@unsl.edu.ar. |
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Jazyk: | angličtina |
Zdroj: | Talanta [Talanta] 2024 Jun 01; Vol. 273, pp. 125971. Date of Electronic Publication: 2024 Mar 21. |
DOI: | 10.1016/j.talanta.2024.125971 |
Abstrakt: | T-2 is one of the most potent cytotoxic food-borne mycotoxins. In this work, we have developed and characterized an electrochemical microfluidic immunosensor for T-2 toxin quantification in wheat germ samples. T-2 toxin detection was carried out using a competitive immunoassay method based on monoclonal anti-T-2 antibodies immobilized on the poly(methyl methacrylate) (PMMA) microfluidic central channel. The platinum wire working electrode at the end of the channel was in situ modified by a single-step electrodeposition procedure with reduced graphene oxide (rGO)-nanoporous gold (NPG). T-2 toxin in the sample was allowed to compete with T-2-horseradish peroxidase (HRP) conjugated for the specific recognizing sites of immobilized anti-T-2 monoclonal antibodies. The HRP, in the presence of hydrogen peroxide (H Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (Copyright © 2024 Elsevier B.V. All rights reserved.) |
Databáze: | MEDLINE |
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