A biosensor based on graphite epoxy composite electrode for aspartame and ethanol detection
Makaleler > Tam Makale · 2006
Yazarlar: Ulku ANIK, Dilek ODACI, Suna TİMUR, Arben MERKOCI, Salvador ALEGRET, Nurgun BESUN, Azmi TELEFONCU
ANALYTICA CHIMICA ACTA, SCI Expanded İndekslerine Giren Dergi, Uluslararası, 2006, cilt 570, ss 165-169
DOI: 10.1016/j.aca.2006.04.010
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.