Chapter 10 Electronic tongues: new analytical perspective for chemical sensors

Publisher Summary Two fields of knowledge mainly influenced the development of electronic tongues: new achievements in biology such as a better understanding of human sensory systems and also possibilities and approaches to data handling and processing offered by chemometrics. The widest application area of electronic tongue systems is the analysis of foodstuffs, in particular beverages. Classification and recognition of different liquid samples is probably the largest area of electronic tongue application. Electronic tongues were widely applied to the recognition of different types of food, often very close in taste. The most exciting application area of electronic tongues, however, is taste quantification, which is understood as formalized assessment of the taste (flavour) characteristics of a product using an electronic tongue and establishing correlation of the instrument response to human sensory perception. The electronic tongues used are capable of discriminating between different types of orange and tomato juices and fruit juice-based soft drinks, and juices produced from tomatoes of different sorts and ripeness grown in experimental orchards.

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