Yazar "Teke, Mustafa" için listeleme
-
Antibiofilm and anti-quorum sensing activities of polyethylene imine coated magnetite and nickel ferrite nanoparticles
Ceylan, Özgür; Tamfu, Alfred Ngenge; İspirli Doğaç, Yasemin; Teke, Mustafa (Springer Science and Business Media Deutschland GmbH, 2020)This study was aimed at synthesizing polyethyleneimine-coated magnetic nanoparticles and evaluating their effect on pathogenic bacteria. Polyethyleneimine-coated magnetite (PEIMnF) and nickel ferrite (PEINF) nanoparticles ... -
beta-cyclodextrin based electrospun nanofibers for arginase immobilization and its application in the production of L-ornithine
Işık, Ceyhun; Teke, Mustafa (SPRINGER, 2022)Electrospinning is the most effective and efficient method for nanofiber production. In this study, polyvinyl alcohol (PVA)/beta-cyclodextrin (beta-CD) and PVA/beta-CD/Mn2+ electrospun nanofibers were synthesized for use ... -
A bio-imprinted urease biosensor: Improved thermal and operational stabilities
Teke, Mustafa; Sezginturk, Mustafa Kemal; Dinckaya, Erhan; Telefoncu, Azmi (Elsevier Science Bv, 2008)Despite the increasing number of applications of biosensors in many fields, the construction of a steady biosensor remains still challenging. The high stability of molecularly bio-imprinted enzymes for its substrate can ... -
A Biosensor Based on Bay Leaf (Laurus nobilis L.) Tissue Homogenate: Improvement of the Stability Characteristics by a Simple Bio-imprinted Technique
Teke, Mustafa; Sezginturk, Mustafa Kemal; Dinckaya, Erhan (Informa Healthcare, 2008)Although enzymes are effective biocatalysts that are widely used in biosensors, a major drawback that hampers many of these biotechnological applications of enzymes is their limited stability. Applications that use very ... -
A comparative study for lipase immobilization onto alginate based composite electrospun nanofibers with effective and enhanced stability
Doğaç, Yasemin İspirli; Deveci, Ilyas; Mercimek, Bedrettin; Teke, Mustafa (Elsevier, 2017)In this study, lipase was successfully immobilized on polyvinyl alcohol/alginate and polyethylene oxide/alginate nanofibers that were prepared by electrospinning. Results showed that nanofibers (especially polyvinyl ... -
DEVELOPMENT OF A NEW BIOSENSOR FOR DETERMINATION OF CATALASE ACTIVITY
Teke, Mustafa (Taylor & Francis Inc, 2014)Catalase is one of the major antioxidant enzymes that catalyzes the hydrolysis of H2O2. The aim of this study was to suggest a new method for the assay of catalase activity. For this purpose, an amperometric biosensor based ... -
Fabrication of electrospun cellulose-derived nanofiber membranes with enhanced stability properties of arginase
Işık, Ceyhun; Teke, Mustafa (TUBITAK, 2022)In this study, cellulose acetate (CA)/polyvinylpyrrolidone (PVP) and CA/PVP/Mn2+ nanofibers were produced by the electrospinning method, and these cellulose-derived membranes were used as carriers for arginase immobilization ... -
IMMOBILIZATION OF BOVINE CATALASE ONTO MAGNETIC NANOPARTICLES
Dogac, Yasemin Ispirli; Teke, Mustafa (Taylor & Francis Inc, 2013)The scope of this study is to achieve carrier-bound immobilization of catalase onto magnetic particles (Fe3O4 and Fe2O3NiO2 center dot H2O) to specify the optimum conditions of immobilization. Removal of H2O2 and the ... -
Immobilization of pancreatic lipase on chitin and chitosan
Kılınç, Ali; Teke, Mustafa; Önal, Seçil; Telefoncu, Azmi (Taylor & Francis Inc, 2006)In this study, porcine pancreatic lipase (EC 3.1.1.3) was immobilized on chitin and chitosan by adsorption and subsequent crosslinking with glutaraldehyde, which was added before (conjugation) or after (crosslinking) washing ... -
Improving of Catalase Stability Properties by Encapsulation in Alginate/Fe3O4 Magnetic Composite Beads for Enzymatic Removal of H2O2
Doğaç, Yasemin İspirli; Çınar, Mürvet; Teke, Mustafa (Taylor & Francis Inc, 2015)The aim of this study was enhancing of stability properties of catalase enzyme by encapsulation in alginate/nanomagnetic beads. Amounts of carrier (10-100 mg) and enzyme concentrations (0.25-1.5 mg/mL) were analyzed to ... -
An ITO Based Disposable Biosensor for Ultrasensitive Analysis of Retinol Binding Protein
Simsek, Cigdem Sayikli; Teke, Mustafa; Sezginturk, Mustafa Kemal (Wiley-V C H Verlag Gmbh, 2014)A highly sensitive electrochemical biosensor based on anti-RBP biorecognition capable to analyze concentrations of retinol binding protein (RBP) was developed. The construction of the biosensor interfaces was carefully ... -
Milk lactose removal by β-galactosidase immobilized on eggshell membrane
Kızıldağ, Selen; Işık, Ceyhun; Teke, Mustafa (Springer Science and Business Media Deutschland GmbH, 2023)Eggshell membrane (ESM) is used in immobilization studies due to its large surface area, non-toxicity and biodegradability. In this study, β-galactosidase was immobilized on ESM using the adsorption and cross-linking method. ... -
A new bioremediation method for removal of wastewater containing oils with high oleic acid composition:Acinetobacter haemolyticuslipase immobilized on eggshell membrane with improved stabilities
Işık, Ceyhun; Saraç, Nurdan; Teke, Mustafa; Uğur, Aysel (Royal Society of Chemistry, 2021)As a result of the increasing demand for edible oils, which are an important part of human nutrition, in recent years, serious environmental problems may arise both during the production and after consumption of these oils. ... -
A Novel Biosensing System Using Biological Receptor for Analysis of Vascular Endothelial Growth Factor
Teke, Mustafa; Sayikli, Cigdem; Canbaz, Cetin; Sezginturk, Mustafa Kemal (Springer, 2014)An immunosensor with rapid and ultrasensitive response for vascular endothelial growth factor (VEGF) has been built up with 4-aminothiophenol (4-ATP) onto the gold surfaces. Quantitative analysis of VEGF was performed by ... -
Purification of bovine pancreatic phospholipase A(2) by an affinity ultrafiltration technique
Teke, Mustafa; Telefoncu, Azmi (Elsevier Science Bv, 2008)Phospholipase A(2) (PLA(2); EC 3.1.1.4) is a lipolytic enzyme that hydrolyze phosphoglycerides at the acyl ester bond at the sn-2-position into the corresponding lysophospholipid and fatty acid. Mammalian PLA(2) enzymes ... -
Removal of H2O2 by magnetic catalase beads
İspirli Doğaç, Yasemin; Teke, Mustafa (Current Biology Ltd, 2011) -
Selective extraction of iron(III) from aqueous nitrate solution in the presence of cobalt(II), copper(II) and nickel(II) ions using BiS(Delta(2)-2-imidazolinyl)-5,5 '-dioxime
Teke, Mustafa; Mercimek, Bedrettin; Özler, Mehmet Ali; Ayar, Ahmet (Japan Soc Analytical Chemistry, 2004)The feasibility of using bis(Delta(2)-2-imidazolinyl)-5,5'-dioxime (H2L) for the selective extraction of iron(III) from aqueous solutions was investigated by employing an solvent-extraction technique. The extraction of ... -
A selective molecularly imprinted polymer for immobilization of acetylcholinesterase (AChE): an active enzyme targeted and efficient method
Demirci, Gökhan; Doğac, Yasemin İspirli; Teke, Mustafa (Wiley-Blackwell, 2015)In the present study, we immobilized acetylcholinesterase (AChE) enzyme onto acetylcholine removed imprinted polymer and acetylcholine containing polymer. First, the polymers were produced with acetylcholine, substrate of ... -
Sulfite Determination by a Biosensor Based on Bay Leaf Tissue Homogenate: Very Simple and Economical Method
Teke, Mustafa; Sezginturk, Mustafa Kemal; Dinckaya, Erhan (Taylor & Francis Inc, 2009)Of all the food additives for which the FDA has received adverse reaction reports, the ones that most closely resemble true allergens are sulfur-based preservatives. Sulfites are used primarily as antioxidants to prevent ... -
Synthesis and Characterisation of Biocompatible Polymer-Conjugated Magnetic Beads for Enhancement Stability of Urease
Doğaç, Yasemin İspirli; Teke, Mustafa (Springer, 2016)We reported natural polymer-conjugated magnetic featured urease systems for removal of urea effectively. The optimum temperature (20-60 A degrees C), optimum pH (3.0-10.0), kinetic parameters, thermal stability (4-70 A ...
