Microchimica Acta

, Volume 169, Issue 3, pp 261–268

A voltammetric electronic tongue made of modified epoxy-graphite electrodes for the qualitative analysis of wine

  • Juan Manuel Gutiérrez
  • Laura Moreno-Barón
  • Maria Isabel Pividori
  • Salvador Alegret
  • Manel del Valle
Original Paper

DOI: 10.1007/s00604-010-0351-z

Cite this article as:
Gutiérrez, J.M., Moreno-Barón, L., Pividori, M.I. et al. Microchim Acta (2010) 169: 261. doi:10.1007/s00604-010-0351-z
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Abstract

First results are presented of a new voltammetric electronic tongue which employs modified epoxy-graphite electrodes. This analytical tool has been applied to qualitative wine analysis, performing the classification of wine varieties, as well as recognition of the oxygenation effect. In the same way, studies related to the detection of some defects in wine production were also assessed, such as its vinegary taste in open-air contact or the use of excess sulphite preservative. The electronic tongue was formed by five voltammetric electrodes, four of them being bulk-modified with different substances: copper and platinum nanoparticles on one side, and polyaniline and polypyrrole powder on the other. The responses were preprocessed employing Principal Component Analysis (PCA) to visualize and identify distinct episodes. The resulting PCA scores were modelled with an artificial neural network that accomplishes final prediction with the qualitative classification of wines and/or detection of defects.

Keywords

Voltammetric sensor Electronic tongue Wine analysis Principal component analysis Artificial neural networks 

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Juan Manuel Gutiérrez
    • 1
  • Laura Moreno-Barón
    • 1
  • Maria Isabel Pividori
    • 1
  • Salvador Alegret
    • 1
  • Manel del Valle
    • 1
  1. 1.Sensors and Biosensors Group, Department of ChemistryUniversitat Autònoma de BarcelonaBellaterraSpain

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