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Articles 120 records found  previous11 - 20nextend  jump to record: Search took 0.01 seconds. 
11.
16 p, 527.5 KB Voltammetric BioElectronic Tongue for the analysis of phenolic compounds in rosé cava wines / Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ; Capdevila Mestres, Josefa (Estació de Viticultura i Enologia, INCAVI) ; Mínguez, Santiago (Estació de Viticultura i Enologia, INCAVI) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
A BioElectronic Tongue (BioET) based on a sensor array comprising 4 voltammetric enzyme-modified (bio)sensors plus pattern recognition and multivariate calibration data processing tools was applied towards the analysis of rosé cava wines. [...]
2014 - 10.1016/j.foodres.2013.11.025
Food Research International, Vol. 55 (January 2014) , p. 455-461  
Detailed record - Creative Commons
12.
15 p, 1.5 MB Voltammetric electronic tongue to identify Brett character in wines. On-site quantification of its ethylphenol metabolites / González-Calabuig, Andreu (Universitat Autònoma de Barcelona. Departament de Química) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This work reports the applicability of a voltammetric sensor array able to evaluate the content of the metabolites of the Brett defect: 4-ethylphenol, 4-ethylguaiacol and 4-ethylcatechol in spiked wine samples using the electronic tongue (ET) principles. [...]
2018 - 10.1016/j.talanta.2017.10.041
Talanta, Vol. 179 (March 2018) , p. 70-74  
Detailed record - Creative Commons
13.
21 p, 538.2 KB Development and application of an electronic tongue for detection and monitoring of nitrate, nitrite and ammonium levels in waters / Nuñez, L. (Universidade Estadual Paulista. Instituto de Química. Departamento de Química Analítica (Brazil)) ; Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ; Pividori, María Isabel (Universitat Autònoma de Barcelona. Departament de Química) ; Zanoni, Maria Valnice (Universidade Estadual Paulista. Instituto de Química. Departamento de Química Analítica (Brazil)) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This work presents the first study and development of an electronic tongue analysis system for the monitoring of nitrogen stable species: nitrate, nitrite and ammonium in water. The electronic tongue was composed of an array of 15 potentiometric poly(vinyl chloride) membrane sensors sensitive to cations and anions plus an artificial neural network (ANN) response model. [...]
2013 - 10.1016/j.microc.2013.04.018
Microchemical Journal, Vol. 110 (September 2013) , p. 273-279  
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14.
25 p, 1.1 MB Enhanced electrochemical response of carbon quantum dot modified electrodes / Algarra, Manuel (Universidad de Málaga. Departamento de Química Inorgánica, Cristalografía y Mineralogía) ; González-Calabuig, Andreu (Universitat Autònoma de Barcelona. Departament de Química) ; Radotić, Ksenija (University of Belgrade. Institute for Multidisciplinary Research) ; Mutavdzic, D. (University of Belgrade. Institute for Multidisciplinary Research) ; Ania, Conchi (Centre national de la recherche scientifique. Conditions Extrêmes et Matériaux: Haute Température et Irradiation) ; Lázaro-Martínez, Juan Manuel M. (Universidad de Buenos Aires. Departamento de Química Orgánica) ; Jiménez-Jiménez, José (Universidad de Málaga. Departamento de Química Inorgánica, Cristalografía y Mineralogía) ; Rodríguez-Castellón, Enrique (Universidad de Málaga. Departamento de Química Inorgánica, Cristalografía y Mineralogía) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
A glassy carbon electrode (GCE) was surface-modified with carbon quantum dots (CQDs) and applied for the effective enhancement of the electrochemical signal for dopamine and uric acid determination. CQDs were prepared from graphite by a green modification of the Hummers method. [...]
2018 - 10.1016/j.talanta.2017.09.082
Talanta, Vol. 178 (Feb. 2018) , p. 679-685  
Detailed record - Creative Commons
15.
21 p, 861.0 KB Array of peptide-modified electrodes for the simultaneous determination of Pb(II), Cd(II) and Zn(II) / Serrano i Plana, Núria (Universitat de Barcelona. Departament de Química Analítica) ; Prieto-Simón, Beatriz (Universitat Autònoma de Barcelona. Departament de Química) ; Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This paper reports the development of three peptide modified sensors in which glutathione (GSH) and its fragments Cys-Gly and γ-Glu-Cys were immobilized respectively through aryl diazonium electrochemical grafting onto the surface of graphite-epoxy composite electrodes (GEC), and used for the simultaneous determination of Cd(II), Pb(II) and Zn(II). [...]
2014 - 10.1016/j.talanta.2014.02.052
Talanta, Vol. 125 (Jul. 2014) , p. 159-166  
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16.
21 p, 861.4 KB Evaluation of red wines antioxidant capacity by means of a voltammetric e-tongue with an optimized sensor array / Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ; Apetrei, Constantin (Universitatea Dunărea de Jos. Departamentul de Chimie, Fizică și Mediu) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química) ; Rodríguez-Méndez, Maria Luz (Universidad de Valladolid. Departamento de Química Inorgánica)
In this work, two sets of voltammetric sensors -prepared using different strategies- have been combined in an electronic tongue to evaluate the complete antioxidant profile of red wines. To this aim, wine samples were analyzed with the whole set of sensors. [...]
2014 - 10.1016/j.electacta.2013.12.079
Electrochimica acta, Vol. 120 (Feb. 2014) , p. 180-186  
Detailed record -
17.
29 p, 618.9 KB Electronic tongues to assess wine sensory descriptors / Cetó Alsedà, Xavier (University of South Australia. Future Industries Institute) ; González-Calabuig, Andreu (Universitat Autònoma de Barcelona. Departament de Química) ; Crespo, Nora (Universitat Autònoma de Barcelona. Departament de Química) ; Pérez, Sandra (Universitat Autònoma de Barcelona. Departament de Química) ; Capdevila Mestres, Josefa (INCAVI-IRTA. Estació de Viticultura i Enologia) ; Puig-Pujol, Anna (INCAVI-IRTA. Estació de Viticultura i Enologia) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This work reports the application of an electronic tongue as a tool towards the analysis of wine in tasks such as its discrimination based on the maturing in barrels or the prediction of the global scores assigned by a sensory panel. [...]
2017 - 10.1016/j.talanta.2016.09.055
Talanta, Vol. 162 (January 2017) , p. 218-224  
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18.
40 p, 1.1 MB Computational design of molecularly imprinted polymer for direct detection of melamine in milk / Bates, Ferdia (Universitat Autònoma de Barcelona. Departament de Química) ; Busato, Mirko (University of Verona. Department of Biotechnology) ; Piletska, Elena (University of Leicester. Department of Chemistry) ; Whitcombe, Michael J. (University of Leicester. Department of Chemistry) ; Karim, Kal (University of Leicester. Department of Chemistry) ; Guerreiro, Antonio (University of Leicester. Department of Chemistry) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química) ; Giorgetti, Alejandro (University of Verona. Department of Biotechnology) ; Piletsky, Sergey (University of Leicester. Department of Chemistry)
A novel protocol for use of molecularly imprinted polymer (MIP) in analysis of melamine is presented. Design of polymer for melamine has been achieved using a combination of computational techniques and laboratory trials, the former greatly reducing the duration of the latter. [...]
2017 - 10.1080/01496395.2017.1287197
Separation Science and Technology, Vol. 52, Issue 8 (March 2017) , p. 1441-1453  
Detailed record - Creative Commons
19.
22 p, 444.8 KB Inhibition equivalency factors for microcystin variants in recombinant and wild-type protein phosphatase 1 and 2A assays / Garibo, Diana (Institut de Recerca i Tecnologia Agroalimentàries) ; Flores, Cintia (Institut de Diagnòstic Ambiental i Estudis de l'Aigua) ; Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ; Prieto-Simón, Beatriz (Universitat Autònoma de Barcelona. Departament de Química) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química) ; Caixach, Josep (Institut de Diagnòstic Ambiental i Estudis de l'Aigua) ; Diogène, Jorge (Institut de Recerca i Tecnologia Agroalimentàries) ; Campàs i Homs, Mònica (Institut de Recerca i Tecnologia Agroalimentàries)
In this work, protein phosphatase inhibition assays (PPIAs) have been used to evaluate the performance of recombinant PP1 and recombinant and wild-type PP2As. The enzymes have been compared using microcystins-LR (MC-LR) as a model cyanotoxin. [...]
2014 - 10.1007/s11356-014-3065-7
Environmental Science and Pollution Research International, Vol. 21, Issue 18 (September 2014) , p. 10652-10660  
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20.
32 p, 1.7 MB Graphene electrode platform for impedimetric aptasensing / Aceta, Yara (Universitat Autònoma de Barcelona. Departament de Química) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
In this study, we synthesized graphene oxide (GO) at different oxidation times (30, 60 and 120 min) using a modified Hummer's method and investigated their carbon-to-oxygen (C/O) ratios, the % C-C double bond, the diffraction pattern, their topography and their electrochemical behaviour both by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). [...]
2017 - 10.1016/j.electacta.2017.01.113
Electrochimica acta, Vol. 229 (March 2017) , p. 458-466  
Detailed record - Creative Commons

Articles : 120 records found   previous11 - 20nextend  jump to record:
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1 Valle, M. Del
1 Valle, M. del
15 Valle, Marta
11 Valle, Marta,
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