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

2011; Elsevier BV; Volume: 99; Issue: 1 Linguagem: Inglês

10.1016/j.microc.2011.04.012

1095-9149

Wander Novakowski, Mauro Bertotti, Thiago R. L. C. Paixão,

Olfactory and Sensory Function Studies

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.