Silica-based electrodes which permanently include a graphite/Au nanoparticles composite were tested for non-enzymatic detection of glucose and fructose. The composite material showed an effective electrocatalytic activity, to achieve the oxidation of the two analytes at quite low potential values and with good linearity. Reduced surface passivation was observed even in presence of organic species normally constituting real samples. Electrochemical responses were systematically recorded in cyclic voltammetry and differential pulse voltammetry by analysing 99 solutions containing glucose and fructose at different concentration values. The analysed samples consisted both in glucose and fructose aqueous solutions at pH 12 and in solutions of synthetic musts of red grapes, to test the feasibility of the approach in a real frame. Multivariate exploratory analyses of the electrochemical signals were performed using the Principal Component Analysis (PCA). This gave evidence of the effectiveness of the chemometric approach to study the electrochemical sensor responses. Thanks to PCA, it was possible to highlight the different contributions of glucose and fructose to the voltammetric signal, allowing their selective determination.

Simultaneous Detection of Glucose and Fructose in Synthetic Musts by Multivariate Analysis of Silica-Based Amperometric Sensor Signals / Crespo-Rosa, Joaquin Rafael; Foca, Giorgia; Ulrici, Alessandro; Pigani, Laura; Zanfrognini, Barbara; Cubillana-Aguilera, Laura; Palacios-Santander, José María; Zanardi, Chiara. - In: SENSORS. - ISSN 1424-8220. - 21:12(2021), pp. 4190-4202. [10.3390/s21124190]

Simultaneous Detection of Glucose and Fructose in Synthetic Musts by Multivariate Analysis of Silica-Based Amperometric Sensor Signals

Foca, Giorgia;Ulrici, Alessandro;Pigani, Laura;Zanfrognini, Barbara;Zanardi, Chiara
2021

Abstract

Silica-based electrodes which permanently include a graphite/Au nanoparticles composite were tested for non-enzymatic detection of glucose and fructose. The composite material showed an effective electrocatalytic activity, to achieve the oxidation of the two analytes at quite low potential values and with good linearity. Reduced surface passivation was observed even in presence of organic species normally constituting real samples. Electrochemical responses were systematically recorded in cyclic voltammetry and differential pulse voltammetry by analysing 99 solutions containing glucose and fructose at different concentration values. The analysed samples consisted both in glucose and fructose aqueous solutions at pH 12 and in solutions of synthetic musts of red grapes, to test the feasibility of the approach in a real frame. Multivariate exploratory analyses of the electrochemical signals were performed using the Principal Component Analysis (PCA). This gave evidence of the effectiveness of the chemometric approach to study the electrochemical sensor responses. Thanks to PCA, it was possible to highlight the different contributions of glucose and fructose to the voltammetric signal, allowing their selective determination.
21
12
4190
4202
Simultaneous Detection of Glucose and Fructose in Synthetic Musts by Multivariate Analysis of Silica-Based Amperometric Sensor Signals / Crespo-Rosa, Joaquin Rafael; Foca, Giorgia; Ulrici, Alessandro; Pigani, Laura; Zanfrognini, Barbara; Cubillana-Aguilera, Laura; Palacios-Santander, José María; Zanardi, Chiara. - In: SENSORS. - ISSN 1424-8220. - 21:12(2021), pp. 4190-4202. [10.3390/s21124190]
Crespo-Rosa, Joaquin Rafael; Foca, Giorgia; Ulrici, Alessandro; Pigani, Laura; Zanfrognini, Barbara; Cubillana-Aguilera, Laura; Palacios-Santander, José María; Zanardi, Chiara
File in questo prodotto:
File Dimensione Formato  
sensors-21-04190.pdf

non disponibili

Tipologia: Versione dell'editore (versione pubblicata)
Dimensione 3.29 MB
Formato Adobe PDF
3.29 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/1247015
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
social impact