Browsing by Author "Oztop, HN"
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Adsorption of bovine serum albumin onto radiation-crosslinked poly(acrylamide/acrylic acid)
Oztop, HN; Saraydin, D; Solpan, D; Guven, O (MULTI SCIENCE PUBL CO LTD, 2004)Poly(acrylamide/acrylic acid) (AAm/AAc) hydrogels were prepared at initial acrylic acid compositions of 70, 80 and 85 mol%, respectively. Mixtures of AAm and AAc monomers were irradiated in a Co-60 gamma-ray source at a ... -
Adsorption of BSA onto radiation-crosslinked poly(AAm/HPMA/MA) terpolymers
Oztop, HN; Saraydin, D; Solpan, D; Guven, O (SPRINGER-VERLAG, 2003)The terpolymeric poly(acrylaDaide/2-hydroxypropylmethacrylate/maleic acid) (AAm/ BPMA/MA) hydrogels in the rod form have been prepared by gamma-radiation of quaternary mixtures of acrylamide, 2-hydroxy propylmethacrylate, ... -
Immobilization of catalase into chemically crosslinked chitosan beads
Cetinus, SA; Oztop, HN (ELSEVIER SCIENCE INC, 2003)Bovine liver catalase was immobilized into chitosan beads prepared in crosslinking solution. Various characteristics of immobilized catalase such as the pH-activity curve, the temperature-activity curve, thermal stability, ... -
Immobilization of catalase on chitosan film
Cetinus, SA; Oztop, HN (ELSEVIER SCIENCE INC, 2000)Catalase was immobilized on the chitosan film that is a natural polymer. Studies were done on free catalase and immobilized catalase on chitosan film concerning the determination of optimum temperature, optimum pH, thermal ... -
Immobilization of Saccharomyces cerevisiae on to acrylamide-sodium acrylate hydrogels for production of ethyl alcohol
Oztop, HN; Oztop, AY; Karadag, E; Isikver, Y; Saraydin, D (ELSEVIER SCIENCE INC, 2003)Acrylamide/sodium acrylate (AAm/SA) copolymers, prepared by using various crosslinkers, were used in experiments on swelling, diffusion, immobilization of yeast cells (Saccharomyces cerevisiae) and production of ethyl ... -
Immobilization of Saccharomyces cerevisiae on to radiation crosslinked HEMA/AAm hydrogels for production of ethyl alcohol
Oztop, HN; Oztop, AY; Isikver, Y; Saraydin, D (ELSEVIER SCI LTD, 2002)Radiation crosslinked 2-hydroxyethyl methacrylate/acrylamide (HEMA/AAm) copolymers prepared by gamma-irradiation were used in experiments on swelling, diffusion, immobilization of yeast cells (Saccharomyces cerevisiae) and ... -
Influence of some amino acids on the dynamic swelling behavior of radiation-induced acrylamide hydrogel
Saraydin, D; Oztop, HN; Karadag, E; Caldiran, Y; Guven, O (HUMANA PRESS INC, 1999)The influence of some amino acids-alanine, glycine, valine, glutamine, histidine, phenylalanine, and tryptophan-on the swelling behavior of acrylamide (AAm) hydrogel prepared by gamma-radiation was investigated. Swelling ... -
Influence of some aromatic amino acids on the swelling behavior of acrylamide/maleic acid hydrogel
Oztop, HN; Saraydin, D; Karadag, E; Caldiran, Y; Guven, O (SPRINGER VERLAG, 1998)Influence of some aromatic amino acids (histidine, phenylalanine and tryptophan) on the swelling behavior of acrylamide/maleic acid hydrogel (AAm/MA) prepared by gamma-radiation was investigated. Swelling tests of AAm/MA ... -
PH-sensitive chitosan films for baker's yeast immobilization
Oztop, HN; Saraydin, D; Cetinus, S (HUMANA PRESS INC, 2002)Dried baker's yeast cells were immobilized on a chitosan film, which is a natural polymer. Prepared chitosan films were treated with glutaraldehyde to facilitate the immobilization of the cells. The effects of the amount ... -
The use of immobilized Saccharomyces cerevisiae on radiation crosslinked acrylamide-maleic acid hydrogel carriers for production of ethyl alcohol
Saraydin, D; Oztop, HN; Karadag, E; Oztop, AY; Isikver, Y; Guven, O (ELSEVIER SCI LTD, 2002)Radiation crosslinked acrylamide/maleic acid (AAm/MA) copolymers were prepared by gamma-irradiation. They were used in experiments on swelling, diffusion, and immobilization of yeast cells (Saccharomyces cerevisiae) for ...