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Coimmobilization of urease and glutamate dehydrogenase in electrochemically prepared polypyrrole-polyvinyl sulfonate films

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Abstract

Immobilization of urease and glutamate dehydrogenase enzymes in electrochemically prepared polypyrrole-polyvinyl sulfonate films (PPY-PVS) was carried out using physical adsorption and electrochemical entrapment techniques. Detailed studies on optimum pH, Fourier transform infrared spectroscopy, cyclic voltammetry, and scanning electron microscopy of the enzymes in the immobilized state were conducted. The value of the apparent Michaelis-Menten constant was experimentally determined to be 2.5 and 2.7 for physically adsorbed and electrochemically entrapped urease in PPY-PVS films, respectively.

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Authors and Affiliations

  1. Biomolecular Electronics and Conducting Polymer Research Group, National Physical Laboratory, 110012, New Delhi, India

    Anamika Gambhir, Manju Gerard & B. D. Malhotra

  2. Chemical and Environmental Engineering Department, University of California, 92521-0425, CA

    A. K. Mulchandani

Authors
  1. Anamika Gambhir
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  2. Manju Gerard
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  3. A. K. Mulchandani
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  4. B. D. Malhotra
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Correspondence to Anamika Gambhir.

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Gambhir, A., Gerard, M., Mulchandani, A.K. et al. Coimmobilization of urease and glutamate dehydrogenase in electrochemically prepared polypyrrole-polyvinyl sulfonate films. Appl Biochem Biotechnol 96, 249–257 (2001). https://doi.org/10.1385/ABAB:96:1-3:249

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  • DOI: https://doi.org/10.1385/ABAB:96:1-3:249

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