Use of copper and gold electrodes as sensitive elements for fabrication of an electronic tongue: Discrimination of wines and whiskies

Author(s)

Novakowski, Wander ^[1] ; Bertotti, Mauro ^[2] ; Paixao, Thiago R. L. C. ^{[1, 2]}

Affiliation

^[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP - Brazil

^[2] Univ Sao Paulo, Inst Quim, BR-05508900 Sao Paulo - Brazil

• Document type: Journal article
• Source: Microchemical Journal; v. 99, n. 1, p. 145-151, SEP 2011.
• Web of Science Citations: 35

Abstract

A low-cost method is proposed to classify wine and whisky samples using a disposable voltammetric electronic tongue that was fabricated using gold and copper substrates and a pattern recognition technique (Principal Component Analysis). The proposed device was successfully used to discriminate between expensive and cheap whisky samples and to detect adulteration processes using only a copper electrode. For wines, the electronic tongue was composed of copper and gold working electrodes and was able to classify three different brands of wine and to make distinctions regarding the wine type, i.e., dry red, soft red, dry white and soft white brands. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 09/07859-1 - Development of voltammetric electronic tongues towards the characterization and identification of adulteration and falsification processes of biofuels
• Grantee: Thiago Regis Longo Cesar da Paixão
• Support Opportunities: Regular Research Grants