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

Research output: Contribution to journalArticleResearchpeer-review

43 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)165-169
JournalAnalytica Chimica Acta
Volume570
Issue number2
DOIs
Publication statusPublished - 16 Jun 2006

Keywords

  • Aspartame
  • Bienzyme biosensor
  • Ethanol
  • Graphite epoxy composite electrode (GECE)

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