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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
25/11/2004 |
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Data da última atualização: |
08/03/2010 |
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Autoria: |
BORATO, C. E.; RIUL JR. A.; FERREIRA, M.; OLIVEIRA JR. O. N.; MATTOSO, L. H. C. |
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Título: |
Exploiting the Versatility of Taste Sensors Based on Impedance Spectroscopy |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Instrumentation Science & Technology, Monticello, v.32, n.1, p. 21-30, 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
The versatility of sensor arrays made from nanostructured Langmuir-Blodgett (LB) and layer-by-Iayer (LBL) films is demonstrated in two ways. First, different combinations of sensing units are employed to distinguish the basic tastes, Vil. sweet, sour, bitter. and salty tastes, produced, respectively, by small concentrations (down to 0.01 g/mol) of sucrose, HCI, quinine, and NaCI solutions. The sensing units are comprised of LB and/or LBL films from serniconducting polymers, a ruthenium complex, and sulfonated lignin. Then, sensor arrays were used to identify wines from different sources, with the high distinguishing ability being demonstrated in principal component analysis (PCA) plots. Particularly important was the fact that the sensing ability does not depend on specific interactions between analytes and the film materiaIs, but a judicious choice of materiaIs is, nevertheless, required for the materiaIs to respond 1 differently to a given sample. lt is algO shown that the interaction with the analyte may affect the morphology of the nanostructured films, as indicated with scanning electron microscopy. |
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Palavras-Chave: |
Espectroscopia; Ordem sensorial. |
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Categoria do assunto: |
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Marc: |
LEADER 01685naa a2200193 a 4500
001 1028685
005 2010-03-08
008 2004 bl --- 0-- u #d
100 1 $aBORATO, C. E.
245 $aExploiting the Versatility of Taste Sensors Based on Impedance Spectroscopy
260 $c2004
520 $aThe versatility of sensor arrays made from nanostructured Langmuir-Blodgett (LB) and layer-by-Iayer (LBL) films is demonstrated in two ways. First, different combinations of sensing units are employed to distinguish the basic tastes, Vil. sweet, sour, bitter. and salty tastes, produced, respectively, by small concentrations (down to 0.01 g/mol) of sucrose, HCI, quinine, and NaCI solutions. The sensing units are comprised of LB and/or LBL films from serniconducting polymers, a ruthenium complex, and sulfonated lignin. Then, sensor arrays were used to identify wines from different sources, with the high distinguishing ability being demonstrated in principal component analysis (PCA) plots. Particularly important was the fact that the sensing ability does not depend on specific interactions between analytes and the film materiaIs, but a judicious choice of materiaIs is, nevertheless, required for the materiaIs to respond 1 differently to a given sample. lt is algO shown that the interaction with the analyte may affect the morphology of the nanostructured films, as indicated with scanning electron microscopy.
653 $aEspectroscopia
653 $aOrdem sensorial
700 1 $aRIUL JR. A.
700 1 $aFERREIRA, M.
700 1 $aOLIVEIRA JR. O. N.
700 1 $aMATTOSO, L. H. C.
773 $tInstrumentation Science & Technology, Monticello$gv.32, n.1, p. 21-30, 2004.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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| Registros recuperados : 31 | |
| 8. |  | RIUL, JR. A.; VENANCIO, E. C.; HERRMANN, P. S. P.; MATTOSO, L. H. C. Effect of analytes in altering the morphology of langmuir-blodgett films of conducting polymers. Acta Microscopica, Maracaibo, v. 10, p. 162-166, 2001. Supplement 1. Proceedings of the First Latin American Symposium on Scanning Microscopy, São Pedro, apr. 2001.| Biblioteca(s): Embrapa Instrumentação. |
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| 13. | | FIRMINO, A.; BORATO, C. E.; LEITE, F. L.; RIUL JR.; A.; BERNARDES FILHO, R.; MATTOSO, L. H. C. AFM as a tool for development sensors. Acta Microscopica, Maracaibo, v. 12, Apr. 2003. Supplement A. CD de trabalhos e resumos apresentados no Second Latin American Symposium on Scanning Probe Microscopy, Búzios, Apr. 2003. 2 f. Invited paper. 1 CD-ROM.| Biblioteca(s): Embrapa Instrumentação. |
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| 18. | | RIUL JR, A.; DHANABALAN, A.; MATTOSO, L. H. C.; SOUZA, L. M. de; TICIANELLI, E. A.; OLIVEIRA JR, O. N. Characterization of 16-mer polyaniline composite Lamgmuir-blodgett films. Thin solid films, Lausanne, v. 327/329, p. 576-580, 1998.| Biblioteca(s): Embrapa Instrumentação. |
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| Registros recuperados : 31 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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