Mostrar el registro sencillo del ítem
dc.contributor.author
Di Tocco, Aylen
dc.contributor.author
Porcal, Gabriela Valeria
dc.contributor.author
Lassabe, Gabriel
dc.contributor.author
González Techera, Andrés
dc.contributor.author
Zon, María Alicia
dc.contributor.author
Fernández, Héctor
dc.contributor.author
González Sapienza, Gualberto
dc.contributor.author
Robledo, Sebastian Noel
dc.contributor.author
Arevalo, Fernando Javier
dc.date.available
2023-09-04T16:01:25Z
dc.date.issued
2022-05-30
dc.identifier.citation
Di Tocco, Aylen; Porcal, Gabriela Valeria; Lassabe, Gabriel; González Techera, Andrés; Zon, María Alicia; et al.; Development of an electrochemical immunosensor for the determination of molinate by using phages labeled with CdS nanocrystals as a novel strategy to signal amplification; Elsevier Science SA; Sensors and Actuators B: Chemical; 367; 30-5-2022; 1-8
dc.identifier.issn
0925-4005
dc.identifier.uri
http://hdl.handle.net/11336/210391
dc.description.abstract
Research on immunoassays and immunosensors is currently focused mainly on the development of strategies to amplify the resulting signal. In this sense, the development of new hapten tracers that allow simpler, more sensitive, and more reliable immunoassays is desirable. Therefore, we present the development of an electrochemical immunosensor using viral particles (phages) bound with dozens of CdS nanocrystals (CdS NCs) as an outperforming alternative to conventional competitive hapten conjugates. This allows us to obtain an multiplicator effect in signal obtained. Therefore, as proof of concept, an electrochemical immunosensor was developed for the detection of the molinate in river water samples, based on a noncompetitive immunoassay using recombinant M13 phage particles labeled with CdS NCs (CdS NCs-phage). The phage particles have on its surface peptides that recognize the molinate/antibody immune complex. Molinate determination was performed by square wave anodic stripping voltammetry of Cd2+ release from CdS NCs. The limit of detection and the midpoint sensitivity obtained were 34 pg mL-1 and 0.43 ng mL-1, respectively. In addition, other very good analytical parameters were obtained, where percent coefficient of variation (%CV) between 5 % and 25 %, and recovery percentages close to 99 % were found. Results obtained were compared with those determined by HPLC-UV visible, obtaining an excellent correlation between both methods. This electrochemical immunosensor was successfully used to analyze molinate in river water samples without pre-treatment, obtaining excellent recoveries.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science SA
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
IMMUNOSENSOR
dc.subject
MOLINATE
dc.subject
PHAGES
dc.subject
QUANTUM DOTS
dc.subject.classification
Química Analítica
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Development of an electrochemical immunosensor for the determination of molinate by using phages labeled with CdS nanocrystals as a novel strategy to signal amplification
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-07-05T12:21:02Z
dc.journal.volume
367
dc.journal.pagination
1-8
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Di Tocco, Aylen. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Porcal, Gabriela Valeria. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados; Argentina
dc.description.fil
Fil: Lassabe, Gabriel. Universidad de la República; Uruguay
dc.description.fil
Fil: González Techera, Andrés. Universidad de la República; Uruguay
dc.description.fil
Fil: Zon, María Alicia. Universidad Nacional de Río Cuarto. Instituto para el Desarrollo Agroindustrial y de la Salud. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto para el Desarrollo Agroindustrial y de la Salud; Argentina
dc.description.fil
Fil: Fernández, Héctor. Universidad Nacional de Río Cuarto; Argentina
dc.description.fil
Fil: González Sapienza, Gualberto. Universidad de la República; Uruguay
dc.description.fil
Fil: Robledo, Sebastian Noel. Universidad Nacional de Río Cuarto. Instituto para el Desarrollo Agroindustrial y de la Salud. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto para el Desarrollo Agroindustrial y de la Salud; Argentina
dc.description.fil
Fil: Arevalo, Fernando Javier. Universidad Nacional de Río Cuarto. Instituto para el Desarrollo Agroindustrial y de la Salud. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto para el Desarrollo Agroindustrial y de la Salud; Argentina
dc.journal.title
Sensors and Actuators B: Chemical
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.snb.2022.132126
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925400522007687
Archivos asociados