01259naa a2200241 a 450000100080000000500110000800800410001910000260006024500690008626000090015552005920016465300170075665300150077365300210078865300300080965300130083970000210085270000210087370000190089470000280091370000220094177300540096310288712009-07-16       2003    bl ---       0--  u    #d1 aSANTOS JÚNIOR, D. S.  aA layer-by-layer film of chitosan in a taste sensor application.  c2003  aChitosan is alternated with SUIfonated poly-styrene (PSS) to build layer-by-layer (LBL) films that are used as sensing units in an electronic tongue. Using impedance spectroscopy as the principle method of detection, an array using chitosan/PSS LBL film are bare gold electrode as the sensing units was capable of distinguishing the basic tastes - salty, sweet, bitter, and sour - to a concentration below the human threshold. The suitability of chitosan as a sensing material was confirmed by using this sensor to distinguish red wines according to their vintage. vineyard,  and brands.  aBiomateriais  aNanolayers  aPolissacarídeos  aPropriedades dielétricas  aSensores1 aRIUL JÚNIOR, A.1 aMALMEGRIM, R. R.1 aFONSECA, F. J.1 aOLIVEIRA JÚNIOR, O. N.1 aMATTOSO, L. H. C.  tMacromolecular Biosciencegv. 3 p. 591-595, 2003.