Yazar "Bayramoglu, Guelay" için listeleme
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Adsorption of Cr(VI) onto PEI immobilized acrylate-based magnetic beads: Isotherms, kinetics and thermodynamics study
Bayramoglu, Guelay; Arica, M. Yakup (Elsevier Science Sa, 2008)Magnetic poly(GMA-EGDMA) beads were prepared from glycidylmetharylate (GMA) and ethyleneglycol dimethacrylate (EGDMA) in the presence of Fe3O4 nano-powder via suspension polymerization. After polymerization, the magnetic ... -
Adsorption of trypsin onto magnetic ion-exchange beads of poly(glycidylmethacrylate-co-ethyleneglycoldimethacrylate)
Arica, M. Yakup; Akyol, Ali Berkan; Bayramoglu, Guelay (John Wiley & Sons Inc, 2008)Magnetic beads were prepared from glycidyl methacrylate (GMA), and ethyleneglycol dimethylmethacrylate (EGDMA) in the presence of Fe3O4 nanopowder via suspension polymerization. The magnetic beads were characterized by ... -
Alcohol determination via covalent enzyme immobilization on magnetic beads
Kiralp, Senem; Topcu, Asuman; Bayramoglu, Guelay; Arica, M. Yakup; Toppare, Levent (Elsevier Science Sa, 2008)Alcohol oxidase was covalently immobilized onto magnetic beads of two different sizes, 75-150 mu m and 50-75 mu m in diameter, fabricated in the presence of glycidylmethacrylate and methylmethacrylate via suspension ... -
Biosorption of Reactive Red-120 dye from aqueous solution by native and modified fungus biomass preparations of Lentinus sajor-caju
Arica, M. Yakup; Bayramoglu, Guelay (Elsevier, 2007)The capacities and mechanisms of native and treated white-rot fungus "Lentinus sajur-caju" biomass preparations in removing of textile dye (i.e. Reactive Red-120) from aqueous solution was investigated with different ... -
Covalent immobilization of chloroperoxidase onto magnetic beads: Catalytic properties and stability
Bayramoglu, Guelay; Kiralp, Senem; Yilmaz, Meltem; Toppare, Levent; Arica, M. Yakup (Elsevier, 2008)Amino groups containing magnetic beads were used in covalent immobilization of the enzyme "chloroperoxidase (CPO)" which is one of a few enzymes that can catalyse the peroxide dependent oxidation of a wide spectrum of ... -
Enzymatic removal of phenol and p-chlorophenol in enzyme reactor: Horseradish peroxidase immobilized on magnetic beads
Bayramoglu, Guelay; Arica, M. Yakup (Elsevier Science Bv, 2008)Horseradish peroxidase was immobilized on the magnetic poly(glycidylmethacrylate-co-methylmethacrylate) (poly(GMA-MMA)), via covalent bonding and used for the treatment of phenolic wastewater in continuous systems. For ... -
Polyaniline grafted polyacylonitrile conductive composite fibers for reversible immobilization of enzymes: Stability and catalytic properties of invertase
Bayramoglu, Guelay; Karakisla, Meral; Altintas, Begum; Metin, Ayseguel U.; Sacak, Mehmet; Arica, M. Yakup (Elsevier Sci Ltd, 2009)Polyacylonitrile fibers (PAN) surfaces were modified with chemical polymerization of conductive polyaniline (PANI) in the presence of potassium dichromate as an oxidizing agent. The effect of aniline concentration on the ... -
Preparation and Characterization of Infection-Resistant Antibiotics-Releasing Hydrogels Rods of Poly[hydroxyethyl methacrylate-co-(poly(ethylene glycol)-methacrylate]: Biomedical Application in a Novel Rabbit Penile Prosthesis Model
Arica, M. Yakup; Tuglu, Devrim; Basar, M. Murad; Kilic, Dilek; Bayramoglu, Guelay; Batislam, Ertan (Wiley, 2008)In this work, preparation and characterization of novel three different antibiotic loaded penile prosthesis in the rod form were investigated by copolymerization of 2-hydroxyethylmethacrylate (HEMA) with poly(ethylene ... -
Preparation and Drug-Release Behavior of Minocycline-Loaded Poly[hydroxyethyl methacrylate-co-poly(ethylene glycol)-methacrylate] Films
Bayramoglu, Guelay; Batislam, Ertan; Arica, M. Yakup (John Wiley & Sons Inc, 2009)In this work, biocompatible hydrogel matrices for wound-dressing materials and controlled drug-release systems were prepared from poly[hydroxyethyl methacrylate-co-poly(ethylene glycol)-methacrylate] [p(HEMA-co-PEG-MA] ... -
Preparation of ion-exchange beads based on poly (methacrylic acid) brush grafted chitosan beads: Isolation of lysozyme from egg white in batch system
Bayramoglu, Guelay; Ekici, Guelsuem; Besirli, Necati; Arica, M. Yakup (Elsevier Science Bv, 2007)Poly(methacrylic acid) brush grafted crosslinked-chitosan (chitosan-g-poly(MAA)) beads were prepared in two sequential steps: in the first step, chitosan beads were prepared by phase-inversion technique and then were ... -
Preparation of methacrylamide grafted and dye-ligand immobilized PET fibers: Studies of adsorption and purification of lysozyme
Karakisla, Meral; Bayramoglu, Guelay; Arica, M. Yakup (John Wiley & Sons Inc, 2008)In this study, novel affinity chromatographic fibers was prepared from methacrylamide grafted poly(ethylene terephthalate), PET-g-pMAA, using benzoyl-peroxide as an initiator. A dye ligand (i.e., Procion Brown) as a ligand ... -
Preparation of nanofibrous polymer grafted magnetic poly(GMA-MMA)-g-MAA beads for immobilization of trypsin via adsorption
Bayramoglu, Guelay; Yilmaz, Meltem; Senel, Ayseguel Uelkue; Arica, M. Yakup (Elsevier, 2008)Poly (glycidylmethacrylate-methylmethacrylate), poly(GMA-MMA) beads were prepared via suspension polymerization in the presence of ferric ions. The epoxy groups of the poly(GMA-MMA) beads were converted into amino groups ... -
Preparation of poly (glycidylmethacrylate-methylmethacrylate) magnetic beads: Application in lipase immobilization
Bayramoglu, Guelay; Arica, M. Yakup (Elsevier Science Bv, 2008)Magnetic bead was prepared from the monomers glycidylmethacrylate (GMA) and methylmethacrylate (MMA) via suspension copolymerization in the presence of ferric ions. The magnetic beads were characterized with scanning ... -
Removal of heavy mercury(II), cadmium(II) and zinc(II) metal ions by live and heat inactivated Lentinus edodes pellets
Bayramoglu, Guelay; Arica, M. Yakup (Elsevier Science Sa, 2008)The live and heat inactivated forms of Lentinus edodes pellets were used for the biosorption of Hg2+, Cd2+ and Zn2+ ions. The maximum adsorption of metal ions on the live and heat inactivated pellets of fungus was observed ... -
Studies of adsorption of alkaline trypsin by poly(methacrylic acid) brushes on chitosan membranes
Bayramoglu, Guelay; Erdogan, Hakan; Arica, M. Yakup (John Wiley & Sons Inc, 2008)Poly(methacrylic acid)-grafted chitosan membranes (chito an-g-poly(MAA)) were prepared in two sequential steps: in the first step, chitosan membranes were prepared by phase-inversion technique and then epichlorohydrin was ... -
Surface modification of polyacrylonitrile film by anchoring conductive polyaniline and determination of uricase adsorption capacity and activity
Bayramoglu, Guelay; Metin, Aysegul Ue; Arica, M. Yakup (Elsevier, 2010)Polyacrylonitrile (PAN) films were modified with chemical polymerization of conductive polyaniline (PANI) in the presence of potassium dichromate as an oxidizing agent. The effect of aniline concentration on the grafting ...