Congratulations Burcu !
DRG master student Burcu DEMÄ°R is a Specialist.
Congratulate and wish them continued success.
NEW
DRG master student Åžerife KART is a Specialist.
Talanta paper is published November 2015
DRG joined via two poster presentation:
Determination of antineoplastic drug 5-Fluorourasil using electrochemical DNA biosensor based on glassy carbon electrode with modified poly(bromocresol purple)
Yrd. Doç. Dr. Derya KOYUNCU ZEYBEK, Burcu DEMİR, Yrd. Doç. Dr. Bülent ZEYBEK, Prof. Dr. Şule PEKYARDIMCI
This work demonstrates a genosensor based on poly(bromocresol purple) (P(BCP)) for observing of interaction between anticancer drug 5-fluorouracil (5-FU) and dsDNA. The dsDNA was immobilized on P(BCP) modified glassy carbon electrode. The proposed electrodes were characterized via CV and EIS techniques. The interaction mechanism of DNA-drug was investigated by differential pulse voltammetry. A decrease in the guanine oxidation peak current was observed after the interaction dsDNA and 5-FU. Under optimum conditions, the linear response was observed in the 5-FU concentration range of 5–50 ppm. The obtained data exhibit the applicability of the developed electrochemical biosensor based on GC/P(BCP)/dsDNA electrode for the determination of 5-FU in pharmaceutical samples. To understanding of the interaction mechanism between dsDNA and 5-FU, UV-Vis spectroscopy and viscometer were also used.
Determination of Tartrazin using novel electrochemical sensor based on nanoceria in drink samples
Yrd. Doç. Dr. Derya KOYUNCU ZEYBEK, M. Özge KARAŞALLI, Şerife KART
This paper described a novel electrochemical sensor based on nanoceria modified carbon paste electrode to determination of tartrazine. The electrochemical characterization of this sensor was actualized via CV and EIS methods. The proposed sensor was successfully used to the electrochemical determination of tartrazine in drink samples and the results were in good agreement with those obtained using HPLC.
DRG was here in Ankara University, July 2015.
