Abstract
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.
Publication types
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Comparative Study
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Evaluation Study
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Research Support, Non-U.S. Gov't
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Validation Study
MeSH terms
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Beverages / analysis
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Biomimetics / instrumentation
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Biomimetics / methods*
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Coated Materials, Biocompatible / chemical synthesis
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Coated Materials, Biocompatible / chemistry
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Electric Conductivity
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Electric Impedance
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Electrochemistry / instrumentation
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Electrochemistry / methods
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Feasibility Studies
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Food Analysis / instrumentation
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Food Analysis / methods*
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Hydrochloric Acid / analysis
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Membranes, Artificial*
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Microchemistry / instrumentation
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Microchemistry / methods*
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Nanotechnology / instrumentation
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Nanotechnology / methods
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Polymers / chemical synthesis
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Polymers / chemistry*
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Quinine / analysis
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Sensitivity and Specificity
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Sodium Chloride / analysis
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Spectrum Analysis / methods*
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Sucrose / analysis
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Taste*
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Transducers*
Substances
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Coated Materials, Biocompatible
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Membranes, Artificial
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Polymers
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Sodium Chloride
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Sucrose
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Quinine
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Hydrochloric Acid