Abstract
Three different electrodes were tested for use as nonspecific amperometric sensors for blind analysis on real matrices, namely different fruit juices from different fruits or different brands. The first two electrodes were traditional Pt and Au electrodes, while the third one was modified with poly(3,4-ethylenedioxythiophene) conducting polymer. The sensors were tested separately, tested coupled to each other, and also tested together. The responses of the electrode system(s) were first screened via PCA and then their discriminant capabilities were quantified in terms of the sensitivities and specificities of their corresponding PLS-DA multivariate classification models. Particular attention was paid to analyzing the evolution of the response over subsequent potential sweeps. The modified electrode demonstrated the most discriminating ability, and it was the only system capable of satisfactorily performing the most complex task attempted during the analysis: discriminating between juices from the same fruit but from different brands. Moreover, the electrode “cleaning” procedure required between two subsequent potential sweeps was much simpler for the modified electrode than for the others. This electrode system was therefore shown to be a good candidate for use as an informative element in an electronic tongue applied to the analysis of other food matrices.
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Vlasov YU, Legin A, Rudnitskaya A, Di Natale C, D’Amico A (2005) Pure Appl Chem 77:1965–1983
Toko K (1998) Sens Update 3:131–158
Legin A, Rudnitskaya A, Vlasov Y (2002) Sensor Update 10:143–184
Vlasov Y, Legin A, Rudnitskaya A (2002) Anal Bioanal Chem 373:136–146
Deisingh AK, Stone DC, Thompson M (2004) Int J Food Sci Technol 39:587–604
Toko K (1996) Mater Sci Eng C4:69–82
Toko K (2000) Sensor Actuat B 64:205–215
Toko K (1998) Biosens Bioelectron 13:701–709
Krantz-Rulcker C, Stenberg M, Winquist F, Lundstrom I (2001) Anal Chim Acta 426:217–226
Winquist F, Krantz-Rulcker C, Lundstrom I (2004) MRS Bull 726–731
Soon Y-S, Goodey A, Anslyn EV, McDevitt JT, Shear JB, Neikirk D (2005) Biosens Bioelectron 21:303–312
Legin A, Rudnitskaya A, Vlasov Yu, Di Natale C, Mazzone E, D’Amico A (2000) Sensor Actuat B 65:232–234
Cortina M, Gutes A, Alegret S, Del Valle M (2005) Talanta 66:1197–1206
Ciosek P, Brzozka Z, Wroblewski W (2004) Sensor Actuat B 103:76–83
Gutes A, Cespedes F, Alegret S, Del Valle M (2005) Talanta 66:1187–1196
Parra V, Arrieta AA, Fernandez-Escudero JA, Garcia H, Apetrei C, Rodriguez-Mendez ML, de Saja JA (2006) Sensor Actuat B 115:54–61
Winquist F, Wide P, Lundstrom I (1997) Anal Chim Acta 357:21–31
Penza M, Cassano G, Tortorella F, Zaccaria G (2001) Sensor Actuat B 73:76–87
Riul A Jr, De Sousa HC, Malmegrim RR, Dos Santos DS Jr, Carvalho ACPLF, Fonseca FJ, Oliveira ON Jr, Mattoso LHC (2004) Sensor Actuat B 98:77–82
Winquist F, Holmin S, Krantz-Rulcker C, Wide P, Lundstrom I (2000) Anal Chim Acta 406:147–157
Ivarsson P, Holmin S, Hojer N-E, Krantz-Rulcker C, Winquist F (2001) Sensor Actuat B 76:449–454
Ivarsson P, Kikkawa Y, Winquist F, Krantz-Rulcker C, Hojer N-E, Hayashi K, Toko K, Lundstrom I (2001) Anal Chim Acta 449:59–68
Winquist F, Bjorklund R, Krantz-Rulcker C, Lundstrom I, Ostergren K, Skoglund T (2005) Sensor Actuat B 111–112:299–304
Riul A Jr, Gallardo Soto AM, Mello SV, Bone S, Taylor DM, Mattoso LHC (2003) Synth Met 132:109–116
Riul A Jr, Malmegrim RR, Fonseca FJ, Mattoso LHC (2003) Biosens Bioelectron 18:1365–1369
Apetrei C, Rodrigues-Mendez ML, Parra V, Gutierrez F, de Saja JA (2004) Sensor Actuat B 103:145–152
Arrieta AA, Apetrei C, Rodrigues-Mendez ML, de Saja JA (2004) Electrochim Acta 49:4543–4551
Kirchmeyer S, Reuter K (2005) J Mater Chem 15:2077–2088
Groenendaal L, Jonas F, Freitag D, Pielartzik H, Reynolds JR (2000) Adv Mater 12:481–494
Soderstrom C, Rudnitskaya A, Legin A, Krantz-Rulcker C (2005) J Biotechnol 119:200–308
Ciosek P, Wroblewski W (2006) Sensor Actuat B 114:85–93
Parra V, Arrieta AA, Fernandez-Escudero JA, Iniguez M, de Saja JA, Rodrıguez-Mendez ML (2006) Anal Chim Acta 563:229–237
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Martina, V., Ionescu, K., Pigani, L. et al. Development of an electronic tongue based on a PEDOT-modified voltammetric sensor. Anal Bioanal Chem 387, 2101–2110 (2007). https://doi.org/10.1007/s00216-006-1102-1
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DOI: https://doi.org/10.1007/s00216-006-1102-1