Non-invasive cortisol detection in saliva by using molecularly cortisol imprinted fullerene-acrylamide modified screen printed electrodes
    
Yazarlar (5)
Hilmiye Deniz Ertuğrul Uygun Dokuz Eylül Üniversitesi, Türkiye
Doç. Dr. Zihni Onur UYGUN Kafkas Üniversitesi, Türkiye
E. Canbay Ege Üniversitesi, Türkiye
Ferhan Gi̇Rgi̇N Sağın Ege Üniversitesi, Türkiye
Ebru Sezer Ege Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Talanta (Q1)
Dergi ISSN 0039-9140 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 01-2020
Cilt / Sayı / Sayfa 206 / 1 / 120225–0 DOI 10.1016/j.talanta.2019.120225
Makale Linki http://dx.doi.org/10.1016/j.talanta.2019.120225
Özet
In this study, we developed an impedimetric sensor system by using molecularly cortisol imprinted acrylamide polymers on fullerene modified carbon electrode to detect cortisol in real saliva samples. The polymer layer was formed on fullerene modified screen printed carbon electrodes with the ratio of 1:2 (cortisol:acrylamide) and ammonium persulfate (APS) was used as the initiator of polymerization. The sensor surface was investigated by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and Scanning Electron Microscopy (SEM). Performances of the electrode were determined as follows; calibration curve was calculated between 0.5 nM and 64 nM, R2 = 0.9939, LOD and LOQ were 0.14 nM and 0.44 nM, respectively. Real human saliva samples were obtained from 15 participants between 25 and 32 ages regardless of gender. The samples, which were collected at least 30 min after waking up and the new sensor method analysis were compared tandem mass spectroscopy coupled liquid chromatography system (LC-MS/MS). The sensor analysis showed a significant correlation with LC-MS/MS results (R2 = 0.9727).
Anahtar Kelimeler
Sensor | Impedance | Cortisol | Molecular imprinting | Saliva | Fullerene