title: Application of an e-tongue to the analysis of monovarietal and blends of white wines.
abstract: This work presents a multiparametric system capable of characterizing and classifying white wines according to the grape variety and geographical origin. Besides, it quantifies specific parameters of interest for quality control in wine. The system, known as a hybrid electronic tongue, consists of an array of electrochemical microsensors-six ISFET based sensors, a conductivity sensor, a redox potential sensor and two amperometric electrodes, a gold microelectrode and a microelectrode for sensing electrochemical oxygen demand--and a miniaturized optofluidic system. The test sample set comprised eighteen Catalan monovarietal white wines from four different grape varieties, two Croatian monovarietal white wines and seven bi- and trivarietal mixtures prepared from the Catalan varieties. Different chemometric tools were used to characterize (i.e., Principal Component Analysis), classify (i.e., Soft Independent Modeling Class Analogy) and quantify (i.e., Partial-Least Squares) some parameters of interest. The results demonstrate the usefulness of the multisensor system for analysis of wine.
authors.affiliation: Instituto de Microelectrónica de Barcelona (IMB-CNM), CSIC. Campus UAB, 08193, Bellaterra, Spain. manuel.gutierrez@imb-cnm.csic.es
authors.forename: Manuel
authors.initials: M
authors.lastname: Gutiérrez
authors.forename: Andreu
authors.initials: A
authors.lastname: Llobera
authors.forename: Andrey
authors.initials: A
authors.lastname: Ipatov
authors.forename: Jordi
authors.initials: J
authors.lastname: Vila-Planas
authors.forename: Santiago
authors.initials: S
authors.lastname: Mínguez
authors.forename: Stefanie
authors.initials: S
authors.lastname: Demming
authors.forename: Stephanus
authors.initials: S
authors.lastname: Büttgenbach
authors.forename: Fina
authors.initials: F
authors.lastname: Capdevila
authors.forename: Carme
authors.initials: C
authors.lastname: Domingo
authors.forename: Cecilia
authors.initials: C
authors.lastname: Jiménez-Jorquera
mesh_terms: D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods*; D004581:Electronics / Q000295:instrumentation / Q000379:methods*; D014920:Wine