Yazar "Anık, Ülkü" için PubMed İndeksli Yayınlar Koleksiyonu listeleme
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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 ... -
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 ... -
Development and application of a SARS-CoV-2 colorimetric biosensor based on the peroxidase-mimic activity of γ-Fe 2 O 3 nanoparticles
Tepeli Büyüksünetçi, Yudum; Çitil, Burak Ekrem; Tapan, Utku; Anık, Ülkü (Springer, 2021)A practical colorimetric assay was developed for the detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). For this purpose, magnetic γ Fe2O3 nanoparticles were synthesized and used as a peroxidase-like ... -
Development of a Sandwich Immunosensor for concurrent detection of carcinoembryonic antigen (CEA), vascular endothelial growth factor (VEGF) and alpha-fetoprotein (AFP) biomarkers
Kalyoncu, Dorukhan; Buyuksunetci, Yudum Tepeli; Anık, Ülkü (Elsevier Science Bv, 2019)Cancer Biomarkers are important biological molecules which provide early detection, diagnosis and classification of cancer cells. In this work, nanoparticle tags with different redox potentials have been used as an ... -
Effect of Nitric Acid "Washing" Procedure on Electrochemical Behavior of Carbon Nanotubes and Glassy Carbon mu-Particles
Anık, Ülkü; Cevik, Serdar; Pumera, Martin (Springeropen, 2010)The electroanalytic performances of glassy carbon paste electrode (GCPE), multi-walled carbon nanotube (MWCNT)-GCPE and double-walled carbon nanotube (DWCNT)-GCPE, which include HNO3 washed/unwashed materials, were compared ... -
An effective electrochemical biosensing platform for the detection of reduced glutathione
Anık, Ülkü; Cubukcu, Meliha; Ertas, F. Nil (Taylor & Francis Ltd, 2016)A biosensor was developed using glutathione peroxidase (GSH-Px) as the enzyme. Firstly, platinum (Pt) nanoparticles were deposited onto a glassy carbon paste electrode (GCPE), and then GSH-Px was immobilized by means of ... -
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 ... -
Electro-Nano Diagnostic Platform Based on Antibody-Antigen Interaction: An Electrochemical Immunosensor for Influenza A Virus Detection
Tepeli Büyüksünetçi, Yudum; Anık, Ülkü (MDPI, 2023)H1N1 is a kind of influenza A virus that causes serious health issues throughout the world. Its symptoms are more serious than seasonal flu and can sometimes be lethal. For this reason, rapid, accurate, and effective ... -
Electrochemical detection of influenza virus H9N2 based on both immunomagnetic extraction and gold catalysis using an immobilization-free screen printed carbon microelectrode
Sayhi, Maher; Ouerghi, Oussama; Belgacem, Kamel; Arbi, Marwa; Tepeli, Yudum; Ghram, Abdeljalil; Diouani, Mohamed Fethi; Anık, Ülkü (Elsevier Advanced Technology, 2018)Influenza is a viral infectious disease considered as a source of many health problems and enormous socioeconomic disruptions. Conventional methods are inadequate for in-field detection of the virus and generally suffer ... -
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 ... -
Fabrication of Electrochemical Model Influenza A Virus Biosensor Based on the Measurements of Neuroaminidase Enzyme Activity
Anık, Ülkü; Tepeli, Yudum; Diouani, Mohamed F. (Amer Chemical Soc, 2016)Neuroaminidase (NA) enzyme is a kind of glycoprotein that is found on the influenza A virus. During infection, NA is important for the release of influenza virions from the host cell surface together with viral aggregates. ... -
Gr-Pt hybrid NP modified GCPE as label and indicator free electrochemical genosensor platform
Sultan, Sinan Cemgil; Anık, Ülkü (Elsevier, 2014)Glassy carbon paste electrode (GCPE) was modified with graphene platinum hybrid nanoparticle (Gr-Pt hybrid NP) and used as a transducer for label and indicator free electrochemical genosensor. 22 mer oligonucleotides ... -
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 ... -
An impedimetric approach for COVID-19 detection
Tepeli Büyüksünetçi, Yudum; Çitil, Burak Ekrem; Anık, Ülkü (ROYAL SOC CHEMISTRY, 2021)In this study, an electrochemical approach for the determination of coronavirus disease (COVID-19) was developed. The biosensor system relied on the spike protein (S-protein) based infection mechanism of the virus and ... -
Nanomaterial-based composite biosensor for glucose detection in alcoholic beverages
Anık, Ülkü; Cubukcu, Meliha; Yavuz, Yeliz (Taylor & Francis Ltd, 2013)A composite electrode was prepared by modifying glassy carbon micro particles with gold nanoparticles and glucose oxidase enzyme for glucose detection. In terms of analytical characteristics, a linearity was obtained in ... -
Towards the electrochemical diagnostic of influenza virus: development of a graphene-Au hybrid nanocomposite modified influenza virus biosensor based on neuraminidase activity
Anık, Ülkü; Tepeli, Yudum; Sayhi, Maher; Nsiri, Jihene; Diouani, Mohamed Fethi (Royal Soc Chemistry, 2018)An effective electrochemical influenza A biosensor based on a graphene-gold (Au) hybrid nanocomposite modified Au-screen printed electrode has been developed. The working principle of the developed biosensor relies on the ...