title: Quantification of organic acids using voltammetric tongues.
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.
authors: Departamento de Tecnología de Alimentos, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain. juaesga1@doctor.upv.es
authors: Juan David
authors: JD
authors: Escobar
authors: Miguel
authors: M
authors: Alcaniz
authors: Rafael
authors: R
authors: Masot
authors: Ana
authors: A
authors: Fuentes
authors: Roman
authors: R
authors: Bataller
authors: Juan
authors: J
authors: Soto
authors: Jose Manuel
authors: JM
authors: Barat
mesh_terms: D000143:Acids / Q000032:analysis*; D055664:Electrochemical Techniques / Q000295:instrumentation / Q000379:methods*; D004566:Electrodes
chemical_list: D000143:Acids