Yazar "Timur, Suna" için listeleme
-
alpha-glucosidase based bismuth film electrode for inhibitor detection
Timur, Suna; Anık, Ülkü (Elsevier, 2007)A biosensing system based on (alpha-glucosidase (AG) activity was developed by using bismuth film modified glassy carbon electrode (BiFE). AG enzyme was immobilized on the BiFE by means of gelatin membrane and the activity ... -
Amine intercalated clay surfaces for microbial cell immobilization and biosensing applications
Demir, Bilal; Seleci, Muharrem; Ag, Didem; Çevik, Serdar; Yalçınkaya, Esra Evrim; Demirkol, Dilek O.; Timur, Suna (Royal Soc Chemistry, 2013)Trimethylamine (TM) intercalated montmorillonite (Mont) clay was prepared and characterized using X-ray diffraction, Fourier transform infrared spectroscopy, zeta potential and thermal gravimetric measurements. Gluconobacter ... -
Amino acid intercalated montmorillonite: electrochemical biosensing applications
Demir, Filiz; Demir, Bilal; Yalçınkaya, Esra E.; Çevik, Serdar; Demirkol, Dilek Odacı; Anık, Ülkü; Timur, Suna (Royal Soc Chemistry, 2014)The present work is the first that includes the use of glycine (Gly), lysine (Lys) and glutamic acid (Glu) modified clay mineral matrices in the biosensors. For this purpose, initially, Gly, Lys and Glu were intercalated ... -
Application of Centri-voltammetry to Cytosensors: Cyto-centrivoltammetry
Tepeli, Yudum; Barlas, Fırat Barış; Timur, Suna; Anık, Ülkü (Pergamon-Elsevier Science Ltd, 2016)In this work, a centri-voltammetric cytosensor suitable for the for detection of folate receptor positive cervical cancer (HeLa) cells was developed for the first time. In order to see the effect of centrifugation, developed ... -
Biocentri-voltammetric biosensor for acetylcholine and choline
Cevik, Serdar; Timur, Suna; Anık, Ülkü (Springer Wien, 2012)We report on the determination of choline and acetylcholine via biocentrivoltammetry. This method combines centrifugation and voltammetry and is based on a carbon paste electrode modified with acetylcholinesterase and ... -
Biocentri-voltammetry for the enzyme assay: a model study
Çevik, Serdar; Timur, Suna; Anık, Ülkü (Royal Soc Chemistry, 2012)This work constitutes the first biocentri-voltammetric application for acetylcholinesterase (AChE) activity assay. After the optimization of working conditions like reaction time, centrifugation speed and time and enzyme ... -
A biosensor based on graphite epoxy composite electrode for aspartame and ethanol detection
Anık, Ülkü; Odacı, Dilek; Timur, Suna; Merkoci, Arben; Alegret, Salvador; Besun, Nurgun; Telefoncu, Azmi (Elsevier Science Bv, 2006)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 ... -
Bismuth Film Electrode as Sensing Platform for IgE-anti-IgE Interactions
Anık, Ülkü; Cevik, Serdar; Timur, Suna (Wiley-V C H Verlag Gmbh, 2011)In this study, a bismuth film was used as a sensing platform for immunoreaction assay which includes the interactions between IgE and anti-IgE molecules. For preparing this assay, IgE was deposited on a carbon paste electrode ... -
Carbon nanotube composite as novel platform for microbial biosensor
Anık, Ülkü; Timur, Suna; Odaci, Dilek; Perez, Briza; Alegret, Salvador; Merkoci, Arben (Wiley-V C H Verlag Gmbh, 2007)The presented work includes the development of a microbial biosensor based on a carbon-nanotube epoxy composite (CNTEC) platform used as supporting electrode for cell immobilization. For this purpose, cells of Pseudomonas ... -
Development of a Bioanode for Microbial Fuel Cells Based on the Combination of a MWCNT-Au-Pt Hybrid Nanomaterial, an Osmium Redox Polymer and Gluconobacter oxydans DSM 2343 Cells
Aslan, Sema; O Conghaile, Peter; Leech, Donal; Gorton, Lo; Timur, Suna; Anık, Ülkü (Wiley-V C H Verlag Gmbh, 2017)In this work, a carbon felt electrode (CFE) was modified with a multiwalled carbon nanotube-gold-platinum (MWCNT-Au-Pt) hybrid nanomaterial and integrated with an osmium redox polymer (OsRP, [Os(2,2'-bipyridine)(2)(poly- ... -
Development of a microbial biosensor based on carbon nanotube (CNT) modified electrodes
Timur, Suna; Anık, Ülkü; Odacı, Dilek; Gorton, Lo (Elsevier Science Inc, 2007)Pseudomonas putida DSM 50026 cells were used as the biological component and the measurement was based on the respiratory activity of the cells estimated from electrochemical measurements. The cells were immobilised on ... -
Development of an Osmium Redox Polymer Mediated Bioanode and Examination of its Performance in Gluconobacter oxydans Based Microbial Fuel Cell
Aslan, Sema; Conghaile, Peter O.; Leech, Donal; Gorton, Lo; Timur, Suna; Anık, Ülkü (Wiley-V C H Verlag Gmbh, 2017)Gluconobacter oxydans (G. oxydans) cells together with an osmium redox polymer (ORP) [Osmium (2,2'-bipyridine) 2(poly-vinylimidazole) 10Cl] Cl were combined with a glassy carbon paste electrode (GCPE) to form a bioanode ... -
Effects of mediators on the laccase biosensor response in paracetamol detection
Odaci, Dilek; Timur, Suna; Pazarlioglu, Nurdan; Anık, Ülkü; Telefoncu, Azmi (Wiley, 2006)An enzyme electrode suitable for paracetamol detection was developed by immobilizing laccase on a dissolved-oxygen probe surface. The immobilization procedure was achieved by means of gelatin, which was then cross-linked ... -
An electrochemical cytosensor based on a PAMAM modified glassy carbon paste electrode
Tepeli, Yudum; Demir, Bilal; Timur, Suna; Anık, Ülkü (Royal Soc Chemistry, 2015)A novel electrochemical cytosensor was developed based on PAMAM and a folic acid (FA) modified glassy carbon paste electrode (GCPE) where HeLa cells were utilized as model cancer cells. For this purpose, gold nanoparticles ... -
Examination of performance of glassy carbon paste electrode modified with gold nanoparticle and xanthine oxidase for xanthine and hypoxanthine detection
Çubukçu, Meliha; Timur, Suna; Anık, Ülkü (Elsevier, 2007)A composite electrode was prepared by modifying glassy carbon microparticles with gold nanoparticles (Au-nps) and xanthine oxidase enzyme (XOD) for xanthine (X) and hypoxanthine (Hx) detection. After the optimization of ... -
Graphite epoxy composite electrodes modified with bacterial cells
Anık, Ülkü; Odaci, Dilek; Timur, Suna; Merkoci, Arben; Pazarlioglu, Nurdan; Telefoncu, Azmi; Alegret, Salvador (Elsevier Science Sa, 2006)The modification of a graphite-epoxy composite electrode (GECE) with bacterial cells along with an analytical application are presented. Pseudomonas putida DSM 50026 was used as a biological component and the measurement ... -
Oxidase mimicking Co/2Fe MOF included biosensor for sialic acid detection
Kıyıkçı, Hüseyin Furkan; Avcı, Okan; Tepeli Büyüksünetçi, Yudum; Timur, Suna; Anık, Ülkü (Elsevier B.V., 2022)A facile amperometric biosensor that included oxidase mimicking Co/2Fe metal-organic framework (MOF) for sialic acid (SA) detection was prepared. Amperometric SA biosensor was constructed on a gold screen-printed electrode ... -
Poly(allylamine hydrochloride) Functionalized Multiwalled Carbon Nanotube Modified Carbon Paste Electrode as Acetylcholinesterase Biosensor Transducer
Çevik, Serdar; Timur, Suna; Anık, Ülkü (Wiley-V C H Verlag Gmbh, 2013)In this work, a sensitive, practical and reliable acetylthiocholine (ATCh) biosensor based on poly(allylamine hydrochloride) functionalized multiwalled carbon nanotube (PAH/MWCNT) was fabricated and used for pesticide ... -
Pseudomonas fragi/graphene-gold hybrid nanomaterial bioanode based microbial fuel cell
Avcı, Okan; Büyüksünetci, Yudum Tepeli; Erden, Emre; Timur, Suna; Anık, Ülkü (Royal Society of Chemistry, 2021)A Pseudomonas fragi (P. fragi) and graphene-gold hybrid nanomaterial included a carbon felt electrode (graphene-Au/CFE) bioanode was developed and optimized. Then, this bioanode was combined with a platinum cathode and a ... -
Recent pros and cons of nanomaterials in drug delivery systems
Anık, Ülkü; Timur, Suna; Dursun, Zekerya (Taylor & Francis As, 2020)The attractive features of nanomaterials enable them to be used in a variety of areas including drug delivery (DD) systems. The advantages like better targeting and effective delivery, promote the usage of these materials ...
