A biosensor based on graphite epoxy composite electrode for aspartame and ethanol detection

Ülkü Anik Kirgöz, Dilek Odaci, Suna Timur, Arben Merkoçi, Salvador Alegret, Nurgün Beşün, Azmi Telefoncu

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Resum

A gelatin membrane with carboxyl esterase and alcohol oxidase was subsequently integrated onto the surface of a graphite epoxy composite electrode (GECE). The developed biosensors showed linearity in the range of 2.5-400 μM for aspartame and 2.5-25 μM for ethanol with response times of 170 and 70 s for each analyte, respectively. The resulting bienzyme biosensor was used for aspartame detection in diet coke samples and ethanol detection in beer and wine samples. From the obtained results, it can be concluded that the developed biosensor is a selective, practical and economic tool for aspartame and ethanol detection in real samples. © 2006 Elsevier B.V. All rights reserved.
Idioma originalAnglès
Pàgines (de-a)165-169
RevistaAnalytica Chimica Acta
Volum570
Número2
DOIs
Estat de la publicacióPublicada - 16 de juny 2006

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