Browsing Biyoloji Bölümü by Issue Date

Covalent immobilization of α-amylase onto pHEMA microspheres: preparation and application to fixed bed reactor

ARICA, MY; HASIRCI, V; ALAEDDINOGLU, NG (Elsevier Sci Ltd, 1995)

Microspheres of poly(2-hydroxyethyl methacrylate) with and without cross-linker were prepared by suspension polymerization. As the amount of cross-linker increased, the equilibrium water content, enzyme loading, immobilization ...

In-vitro studies of enteric coated diclofenac sodium-carboxymethylcellulose microspheres

Arica, B; Arica, MY; Kas, HS; Hincal, AA; Hasirci, V (Taylor & Francis Ltd, 1996)

Microspheres containing diclofenac sodium (DS) were prepared using carboxymethylcellulose (CMC) as the main support material (1.0, 2.0, 3.0% (w/v)) and aluminium chloride as the crosslinker. Drug to polymer ratios of 1:1, ...

Comparison of β-galactosidase immobilization by entrapment in and adsorption on poly(2-hydroxyethylmethacrylate) membranes

Turut, A; Bati, B; Kokce, A; Saglam, M; Yalcin, N (Royal Swedish Acad Sciences, 1996)

Schottky barrier height shifts depending on the interfacial layer as well as a change of the interface state charge with the forward bias while considering the presence of bulk (semiconductor) series resistance are discussed ...

Comparison of β-galactosidase immobilization by entrapment in and adsorption on poly(2-hydroxyethylmethacrylate) membranes

Baran, T; Arica, MY; Denizli, A; Hasirci, V (John Wiley & Sons Ltd, 1997)

beta-Galactosidase was immobilized in/on poly(2-hydroxyethyl methacrylate) (pHEMA) membranes by two different methods: adsorption on Cibacron F3GA derivatized pHEMA membranes (pHEMA-CB), and entrapment in the bulk of the ...

Controlled release of Aldicarb from carboxymethylcellulese microcapsules

Arica M.Y.; Yiğtoğlu M.; Lale M.; Kök F.N.; Hasirci V. (1997)

Sodium carboxymethyl cellulose was converted into microspheres by crosslinking with aluminum chloride. Various microsheres with different amounts of crosslinker, biopolymer of various concentrations and molecular weights, ...

Immobilization of glucose oxidase and urease in hydrogel matrices

Gurel, I; Arica, MY; Hasirci, V (Scientific Technical Research Council Turkey, 1997)

Immobilization of glucose oxidase and urease in hydrogels of 2-hydroxyethyl methacrylae, and N-vinyl pyrrolidone (NVP) was achieved by irradiation (using UV kand gamma-rays). The effect of radiation on entrapment efficiencies, ...

Cibacron Blue F3GA-incorporated macroporous poly(2-hydroxyethyl methacrylate) affinity membranes for heavy metal removal

Denizli, A; Salih, B; Arica, MY; Kesenci, K; Hasirci, V; Piskin, E (Elsevier Science Bv, 1997)

Macroporous poly(2-hydroxyethyl methacrylate), poly(HEMA), membranes were prepared by UV-initiated photo-polymerization of HEMA in the presence of an initiator (azobisisobutyronitrile, AIBN). An affinity dye, i.e., Cibacron ...

Catalase adsorption onto cibacron blue F3GA and Fe(III)derivatized poly(hydroxyethyl methacrylate) membranes and application to a continuous system

Arica, MY; Denizli, A; Salih, B; Piskin, E; Hasirci, V (Elsevier Science Bv, 1997)

Poly(2-hydroxyethyl methacrylate) (poly(HEMA)) membranes were prepared by W-initiated photopolymerization of HEMA in the presence of an initiator (a-a'-azobisisobutyronitrile, AIBN). An affinity dye, i.e. Cibacron Blue ...

Dye derived and metal incorporated affinity poly(2-hydroxyethyl methacrylate) membranes for use in enzyme immobilization

Arica, MY; Denizli, A; Baran, T; Hasirci, V (John Wiley & Sons Ltd, 1998)

Microporous poly(2-hydroxyethyl methacrylate) (PHEMA) membranes were prepared by W-initiated photopolymerization of HEMA in the presence of an initiator (alpha,alpha'-azobisisobutyronitrile, AIBN). An affinity dye Cibacron ...

Synthesis and mechanical properties of interpenetrating networks of polyhydroxybutyrate-co-hydroxyvalerate and polyhydroxyethyl methacrylate

Gursel, I; Balcik, C; Arica, Y; Akkus, O; Akkas, N; Hasirci, V (Elsevier Sci Ltd, 1998)

Naturally occurring, biocompatible, and biodegradable polyhydroxybutyrate-co-hydroxyvalerate (PHBV), and synthetic, non-degrading polyhydroxyethylmethacrylate (PHEMA) membranes were prepared and their mechanical properties ...

Immobilization of glucoamylase onto activated pHEMA/EGDMA microspheres: properties and application to a packed-bed reactor

Arica, MY; Alaeddinoglu, NG; Hasirci, V (Elsevier Science Inc, 1998)

Glucoamylase was covalently immobilized onto pHEMA/EGDMA microspheres of two different sizes: 50-100 mu m and 100-200 mu m in diameter. The activity of the enzyme on smaller microspheres was found to be almost twice that ...

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 ...

Cibacron Blue F3GA and Cu(II) derived poly(2-hydroxyethylmethacrylate) membranes for lysozyme adsorption

Denizli, A; Senel, S; Arica, MY (Elsevier Science Bv, 1998)

Lysozyme adsorption onto Cibacron Blue F3GA and Cu(II) derived poly(2-hydroxyethyl methacrylate) [poly(HEMA)] membranes was investigated. Microporous poly(HEMA) membranes were prepared by photopolymerization of HEMA. The ...

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 ...