Abstract
Recently, electronic tongues (ET) have appeared as an excellent alternative to traditional techniques for
the evaluation of food quality and processes. ET systems are based on arrays of low selectivity sensors
that are simultaneously sensitive to several components in a measured sample (cross-sensitivity). The
aim of this study was to determine the ability of an ET based on pulse voltammetry to quantify organic
acids (ascorbic, citric and malic acids) in simple (SS) and binary solutions (BS) using different electrodes.
The most significant electrodes for ascorbic acid prediction were Ni and Ag for SS, and Ag and Ir for BS
where positive pulses were more suitable than negative ones. The prediction of citric and malic acids
in SS and BS were suitable using Ir, Rh, Pt, Ag and Cu electrodes, using both positive and negative pulses.
