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


ANIK U., Odaci D. , Timur S. , MERKOCI A., ALEGRET S., BESUN N., ...Daha Fazla

ANALYTICA CHIMICA ACTA, cilt.570, ss.165-169, 2006 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 570 Konu: 2
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.aca.2006.04.010
  • Dergi Adı: ANALYTICA CHIMICA ACTA
  • Sayfa Sayıları: ss.165-169

Özet

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 mu M for aspartame and 2.5-25 mu M 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. (c) 2006 Elsevier B.V. All rights reserved.