An artificial taste sensor based on conducting polymers.

Pure and composite nanostructured films of conducting polymers were used as individual sensing units constituting an electronic tongue. The use of extremely thin films for signal transduction via impedance spectroscopy measurements in the frequency range 10-1 MHz allows the detection of trace amounts of tastants and inorganic contaminants in liquid systems. In addition, the sensor could detect the suppression of sourness by sweetness displaying similarities with the biological system. Brands of several commercial beverages could be easily distinguished without complex analysis, including the discrimination of waters, tastants and wines.

[1]  P. Breslin,et al.  Interactions among salty, sour and bitter compounds , 1996 .

[2]  S. Schiffman.  Taste quality and neural coding Implications from psychophysics and neurophysiology , 2000, Physiology & Behavior.

[3]  Fernando J. Fonseca,et al.  Artificial Taste Sensor: Efficient Combination of Sensors Made from Langmuir−Blodgett Films of Conducting Polymers and a Ruthenium Complex and Self-Assembled Films of an Azobenzene-Containing Polymer , 2002 .

[4]  B. Green,et al.  Thermal stimulation of taste , 2000, Nature.

[5]  R. Margolskee,et al.  Making sense of taste. , 2001, Scientific American.

[6]  A. E. Greenberg,et al.  Standard methods for the examination of water and wastewater : supplement to the sixteenth edition , 1988 .

[7]  R. L. Elsenbaumer,et al.  Handbook of conducting polymers , 1986 .

[8]  Kiyoshi Toko,et al.  Evaluation of water quality and pollution using multichannel sensors , 2000 .

[9]  Coke, crack, pot, speed et al. , 2001, Scientific American.

[10]  E. Mazzone,et al.  Application of Electronic Tongue for Quantitative Analysis of Mineral Water and Wine , 1999 .

[11]  A. Rouhi.  UNLOCKING THE SECRETS OF TASTE: Newly identified taste receptors and the molecules that stimulate them provide entry point for researchers who investigate our least understood sense , 2001 .

[12]  Kenshi Hayashi,et al.  Comparison of a voltammetric electronic tongue and a lipid membrane taste sensor , 2001 .

[13]  S. Roper,et al.  Taste Receptor Cells That Discriminate Between Bitter Stimuli , 2001, Science.

[14]  K. Toko,et al.  A taste sensor , 1998 .

[15]  R. Paolesse,et al.  Application of a combined artificial olfaction and taste system to the quantification of relevant compounds in red wine , 2000 .

[16]  Alisa Rudnitskaya,et al.  Electronic tongues and their analytical application , 2002, Analytical and bioanalytical chemistry.

[17]  F. Plum.  Handbook of Physiology. , 1960 .

[18]  C. Natale,et al.  Electronic tongue: new analytical tool for liquid analysis on the basis of non-specific sensors and methods of pattern recognition , 2000 .

[19]  I. Lundström,et al.  A hybrid electronic tongue. , 2000 .

[20]  Linda M. Bartoshuk,et al.  Taste mixtures: Is mixture suppression related to compression? , 1975, Physiology & Behavior.

[21]  D. De Rossi,et al.  Chemoresistive conducting polymer-based odour sensors: influence of thickness changes on their sensing properties , 1997 .

[22]  F. Winquist,et al.  Discrimination of tea by means of a voltammetric electronic tongue and different applied waveforms , 2001 .

[23]  S. Goloskokov.  Spin asymmetries in diffractive J/ϕ leptoproduction , 1999 .

[24]  B. Lindemann.  Receptors and transduction in taste , 2001, Nature.

[25]  Attila E. Pavlath.  WELCOME TO THE 21ST CENTURY , 2001 .

[26]  Antonella Macagnano,et al.  Multicomponent analysis on polluted waters by means of an electronic tongue , 1997 .

[27]  A. Riul,et al.  Composite Langmuir monolayers and Langmuir-Blodgett films from 16-mer polyaniline , 1997 .

[28]  A. G. Macdonald,et al.  AC admittance of the metal/insulator/electrolyte interface , 1987 .

[29]  S. V. Mello,et al.  LB films of parent polypyrrole , 1999 .

[30]  I. Lundström,et al.  Electronic tongues for environmental monitoring based on sensor arrays and pattern recognition: a review , 2001 .

[31]  K. Toko,et al.  Quantification of suppression of bitterness using an electronic tongue. , 2001, Journal of pharmaceutical sciences.