Resolution of galactose, glucose, xylose and mannose in sugarcane bagasse employing a voltammetric electronic tongue formed by metals oxy-hydroxide/MWCNT modified electrodes
Cardoso de Sá, Acelino (Universitat Autònoma de Barcelona. Departament de Química)
González-Calabuig, Andreu (Universitat Autònoma de Barcelona. Departament de Química)
Cipri, Andrea (Universitat Autònoma de Barcelona. Departament de Química)
Ramos Stradiotto, Nelson (Universidade Estadual Paulista. Institute of Chemistry)
Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)

Date:	2016
Abstract:	Second generation ethanol is produced from the carbohydrates released from the cell wall of bagasse and straw of sugarcane. The objective of this work is the characterization and application of a voltammetric electronic tongue using an array of glassy carbon electrodes modified with multi-walled carbon nanotubes containing metal (Paladium, Gold, Copper, Nickel and Cobalt) oxy-hydroxide nanoparticles (GCE/MWCNT/MetalsOOH) towards a simpler analysis of carbohydrates (glucose, xylose, galactose and mannose). The final architecture of the back-propagation Artificial Neural Network (ANN) model had 36 input neurons and a hidden layer with 5 neurons. The ANN based prediction model has provided satisfactory concentrations for all carbohydrates; the obtained response had a maximum NRMSE of 12. 4% with a maximum deviation of slopes in the obtained vs. expected comparison graph of 15%. For all species, the comparison correlation coefficient was of r ≥ 0. 99 for the training subset and of r ≥ 0. 96 for the test subset.
Grants:	Ministerio de Economía y Competitividad CTQ2013-41577-P European Commission 264772
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Electronic tongue ; Carbohydrates ; Artificial neural network ; Multi-walled carbon nanotubes ; Metal nanoparticles ; Second generation ethanol
Published in:	Sensors and actuators. B, Chemical, Vol. 222 (January 2016) , p. 645-653, ISSN 1873-3077

DOI: 10.1016/j.snb.2015.08.088

Post-print 28 p, 1.3 MB

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