Browsing by Author "Denizli, A"
Now showing items 21-40 of 55
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Dye-ligand and metal chelate poly(2-hydroxyethylmethacrylate) membranes for affinity separation of proteins
Arica, MY; Testereci, HN; Denizli, A (Elsevier Science Bv, 1998)Cibacron Blue F3GA was covalently immobilized onto poly(2-hydroxyethyl methacrylate) (pHEMA) membranes via the nucleophilic reaction between the chloride of its triazine ring and the hydroxyl group of pHEMA. Then, Fe3+ ... -
Entrapment of Lentinus sajor-caju into Ca-alginate gel beads for removal of Cd(II) ions from aqueous solution: preparation and biosorption kinetics analysis
Bayramoglu, G; Denizli, A; Bektas, S; Arica, MY (Elsevier Science Bv, 2002)A white rot fungus species Lentinus sajor-caju biomass was entrapped into alginate gel via a liquid curing method in the presence of Ca(II) ions. The biosorption of cadmium(II) by the entrapped live and dead fungal biomass ... -
Fibronectin purification from human plasma in a packed-bed column system with gelatin immobilized PHEMA microspheres
Kayirhan-Denizli, F; Arica, MY; Denizli, A (Vsp Bv, 2001)Bioaffinity chromatography has a unique and powerful role that is used as a purification tool in the production of therapeutic plasma protein derivatives. In this study, a bioaffinity-ligand, i.e. gelatin, was covalently ... -
Fluoride release from microporous poly(2-hydroxyethyl methacrylate) membranes
Yildirmaz, G; Akgol, S; Arica, MY; Sonmez, H; Denizli, A (Elsevier Science Bv, 2003)Fluoride ion is commonly used in the preventive treatment of tooth decay and when provided with extra fluoride, children living in regions that lack fluoride benefit from it. In the present study, the clinical properties ... -
Heavy metal separation capacity of a porous methacrylamidophenylalanine containing membrane based on a polyhydroxyethyl methacrylate matrix
Denizli, A; Say, R; Patir, S; Arica, Y (Marcel Dekker Inc, 2001)The abilities of various sorbent materials for heavy metal removal have been reported in the literature. We have developed a novel approach to obtain high metal-sorption capacity utilizing a membrane containing ... -
Hydrolysis of sucrose by invertase immobilized onto novel magnetic polyvinylalcohol microspheres
Akgol, S; Kacar, Y; Denizli, A; Arica, MY (Elsevier Sci Ltd, 2001)The magnetic polyvinylalcohol (PVAL) microspheres were prepared by crosslinking glutaraldehyde. 1,1 ' -Carbonyldiimidazole (CDI), a carbonylating agent was used for the activation of hydroxyl groups of polyvinylalcohol, ... -
Immobilization of glucoamylase on the plain and on the spacer arm-attached poly(HEMA-EGDMA) microspheres
Arica, MY; Yavuz, H; Denizli, A (John Wiley & Sons Inc, 2001)Immobilization glucoamylase onto plain and a six-carbon spacer arm (i.e., hexamethylene diamine, HMDA) attached poly(2-hydroxyethylmethacrylate-ethylen col dimethacrylate) [poly(HEMA-EGDMA] microspheres was studied. The ... -
Immobilization of glucoamylase onto spacer-arm attached magnetic poly(methylmethacrylate) microspheres: characterization and application to a continuous flow reactor
Arica, MY; Yavuz, H; Patir, S; Denizli, A (Elsevier Science Bv, 2000)Magnetic poly(methylmethacrylate) microspheres (MPMMA) were prepared by the solvent evaporation method and a 6-carbon spacer-arm (i.e. hexamethylene diamine, HMDA) was covalently attached by the reaction of carbonyl groups ... -
In vitro cadmium removal from human serum by Cibacron Blue F3GA-thionein-complex conjugated affinity membranes
Denizli, F; Denizli, A; Arica, MY (John Wiley & Sons Ltd, 2000)A new membrane affinity biosorbent carrying thionein has been developed for selective removal of cadmium ions from human serum. Microporous poly(2-hydroxyethyl methacrylate) (pHEMA) membranes were prepared by photopolymerization ... -
Invertase immobilized on spacer-arm attached poly(hydroxyethyl methacrylate) membrane: Preparation and properties
Arica, MY; Senel, S; Alaeddinoglu, NG; Patir, S; Denizli, A (John Wiley & Sons Inc, 2000)Microporous poly(2-hydroxyethyl methacrylate) (pHEMA) membrane was prepared by UV-initiated photopolymerization. The spacer arm (i.e., hexamethylene diamine) was attached covalently and then invertase was immobilized by ... -
Membrane with incorporated hydrophobic ligand for hydrophobic interaction with proteins: application to lipase adsorption
Bayramoglu, G; Denizli, A; Arica, MY (Wiley, 2002)In this study, phenylalanine as a hydrophobic ligand was covalently attached on a comonomer, methacryloyl chloride. Then, poly(2-hydroxyethyl methacrylate-co-methacrylamido-phenylalanine), poly(HEMA/MAPA), membranes were ... -
Metal-chelating properties of poly(2-hydroxyethyl methacrylate-methacryloylamidohistidine) membranes
Denizli, A; Bektas, S; Arica, Y; Genc, O (John Wiley & Sons Inc, 2005)Metal-chelating membranes have advantages as adsorbents in comparison with conventional beads because they are not compressible and they eliminate internal diffusion limitations. The aim of this study was to explore in ... -
Monosize and non-porous p(HEMA-co-MMA) microparticles designed as dye- and metal-chelate affinity sorbents
Denizli, A; Yavuz, H; Arica, Y (Elsevier Science Bv, 2000)Congo red was immobilised onto monosize and non-porous poly(2-hydroxyethylmethacrylate-co-methylmethacrylate) [p(HEMA-co-MMA)] copolymer microparticles (4.0 mu m in diameter). Then Fe(III) ions were complexed by chelation ... -
New metal chelate sorbent for albumin adsorption: Cibacron blue F3GA-Zn(II) attached microporous poly(HEMA) membranes
Denizli, A; Salih, B; Senel, S; Arica, MY (John Wiley & Sons Inc, 1998)Poly(2-hydroxyethyl methacrylate) [poly(HEMA)] membranes were prepared by UV-initiated photopolymerization of HEMA in the presence of an initiator (alpha-alpha'-azobis-isobutyronitrile, AIBN). The triazine dye Cibacron ... -
Nonporous monosize polymeric sorbents: Dye and metal chelate affinity separation of lysozyme
Denizli, A; Yavuz, H; Garipcan, B; Arica, MY (John Wiley & Sons Inc, 2000)Lysozyme adsorption onto dye-attached nonporous monosize poly(2-hydroxyethyl-methacrylate-methylmethacrylate) [poly(HEMA-MMA)] microspheres was investigated. Poly(HEMA-MNA) microspheres were prepared by dispersion ... -
Novel dye-attached macroporous films for cadmium, zinc and lead sorption: Alkali Blue 6B-attached macroporous poly(2-hydroxyethyl methacrylate)
Denizli, A; Kesenci, K; Arica, MY; Salih, B; Hasirci, V; Piskin, E (Elsevier Science Bv, 1998)Alkali Blue GB-attached poly(2-hydroxyethyl methacrylate) (poly(HEMA)) microporous films were investigated as chelate forming sorbents for heavy metal removal. Poly(HEMA) microporous films were prepared by UV-initiated ... -
Novel hydrophobic ligand-containing hydrogel membrane matrix: preparation and application to gamma-globulins adsorption
Arica, MY; Akin-Oktem, G; Denizli, A (Elsevier Science Bv, 2001)In this study, phenylalanine as a hydrophobic ligand was covalently attached to the co-monomer methacrylochloride. Then, poly(2-hydroxyethylmethacrylate-co-methacrylamidophenyalanine) [poly(HEMA-MApA)] membranes were ... -
Poly(hydroxyethyl methacrylate-co-glycidyl methacrylate) reactive membrane utilised for cholesterol oxidase immobilisation
Akgol, S; Bayramoglu, G; Kacar, Y; Denizli, A; Arica, MY (John Wiley & Sons Ltd, 2002)Poly(2-hydroxyethyl methacrylate-co-glycidyl methacrylate) p(HEMA-GMA) membrane was prepared by UV-initiated photopolymerisation of 2-hydroxyethyl methacrylate (HEMA) and glycidyl methacrylate (GMA) in the presence of an ... -
Poly(styrene-hydroxyethyl methacrylate) monodisperse microspheres as specific sorbent in dye affinity adsorption of albumin
Uzun, L; Odabasi, M; Arica, Y; Denizli, A (Taylor & Francis Inc, 2004)In this study, human serum albumin (HSA) adsorption properties of reactive green HE-4BD-attached monodisperse poly(styrene-2-hydroxyethyl methacrylate) [poly(St-HEMA)] microspheres were investigated. Poly(St-HEMA) microspheres ... -
Polyhydroxyethylmethacrylate/polyhydroxybutyrate composite membranes for fluoride release
Yildirmaz, G; Akgol, S; Arica, MY; Sonmez, H; Denizli, A (Wiley, 2003)Controlled release technology is a recent technology which has considerable potential in the fields of medicine, pharmacy, and agriculture. Fluoride ion is commonly used in the preventive treatment of decay, and when ...