Combined electronic nose and tongue for a flavour sensing system

SENSORS AND ACTUATORS B-CHEMICAL

卷:156

Article

Cole, Marina¹  Covington, James A.¹  Gardner, Julian W.¹ 

[1] Univ Warwick, Sch Engn, Coventry CV4 7AL, W Midlands, England

关键词: Electronic nose;    Electronic tongue;    Flavour system;    chemFET;    SH-SAW;   

DOI  :  10.1016/j.snb.2011.02.049

来源: Elsevier

【 摘 要 】

We present a novel, smart sensing system developed for the flavour analysis of liquids. The system comprises both a so-called electronic tongue based on shear horizontal surface acoustic wave (SH-SAW) sensors analysing the liquid phase and a so-called electronic nose based on chemFET sensors analysing the gaseous phase. Flavour is generally understood to be the overall experience from the combination of oral and nasal stimulation and is principally derived from a combination of the human senses of taste (gustation) and smell (olfaction). Thus, by combining two types of microsensors, an artificial flavour sensing system has been developed. Initial tests conducted with different liquid samples, i.e. water, orange juice and milk (of different fat content), resulted in 100% discrimination using principal components analysis; although it was found that there was little contribution from the electronic nose. Therefore further flavour experiments were designed to demonstrate the potential of the combined electronic nose/tongue flavour system. Consequently, experiments were conducted on low vapour pressure taste-biased solutions and high vapour pressure, smell-biased solutions. Only the combined flavour analysis system could achieve 100% discrimination between all the different liquids. We believe that this is the first report of a SAW-based analysis system that determines flavour through the combination of both liquid and headspace analysis. (C) 2011 Elsevier B.V. All rights reserved.

【 授权许可】

Free