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Immobilization of saccharomyces cerevisiae in graft copolymers of pyrrole
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116449.pdf
Date
2001
Author
Balcı, Zeynep
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https://hdl.handle.net/11511/10841
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Graduate School of Natural and Applied Sciences, Thesis
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Immobilization of tyrosinase in polysiloxane/polypyrrole copolymer matrices
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Immobilization of tyrosinase in conducting copolymer matrices of pyrrole functionalized polydimethylsiloxane/polypyrrole (PDMS/PPy) was achieved by electrochemical polymerization. The polysiloxane/polypyrrole/tyrosinase electrode was constructed by the entrapment of enzyme in conducting matrices during electrochemical copolymerization. Maximum reaction rate (V-max) and Michaelis-Menten constant were investigated for immobilized enzyme. Enzyme electrodes were prepared in two different electrolyte/sol vent sy...
Immobilization of tyrosinase in polysiloxane/polypyrrole copolymer matrices
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Immobilization of tyrosinase in conducting copolymer matrices of pyrrole functionalized polydimethylsiloxane/polypyrrole (PDMS/PPy) were achieved by electrochemical polymerization. The polysiloxane/polypyrrole/tyrosinase electrode was constructed by the entrapment of enzyme in conducting matrices during electrochemical copolymerization. Maximum reaction rate (Vmax) and Michaelis-Menten constant (Km) were investigated for immobilized enzyme. Enzyme electrodes were prepared in two different electrolyte/solven...
Immobilization of urease in conducting thiophene-capped poly(methyl methacrylate)/pyrrole matrices
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Urease was immobilized in conducting polypyrrole and block copolymers of thiophene-capped poly(methyl methacrylate) matrices by electropolymerization. Immobilization of the enzyme was achieved by application of 1.0 V constant potential in a solution of 0.02 M pyrrole, 2 mg/ml urease, 0.5 mg/ml supporting electrolyte. The optimum immobilization conditions, electrolysis time, electrolysis medium, enzyme concentration during electrolysis, type of supporting electrolyte were determined. The kinetic behaviors of...
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In this study, glucose isomerase enzyme was entrapped into modified and nonmodified calcium alginate gel beads. Various characteristics of free and immobilized enzymes such as the optimum pH, temperature and dependence of activity on storage and operational stability were evaluated. The optimum pH and temperature of free and immobilized glucose isomerase were found to be the same values as 7.5 and 60C, respectively. For free and immobilized enzymes, kinetic parameters were calculated as 1.79 x 10(-2) and 8....
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Z. Balcı, “Immobilization of saccharomyces cerevisiae in graft copolymers of pyrrole,” Middle East Technical University, 2001.