Comperative study of catalase immobilization on chitosan, magnetic chitosan and chitosan-clay composite beads
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2013
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Abstract
Catalase was immobilized on chitosan and modified chitosan. Studies were carried out on free-immobilized catalase concerning the determination of optimum temperature, pH, thermal, storage stability, reusability, and kinetic parameters. Optimum temperature and pH for free catalase and catalase immobilized were found as 35°C and 7.0, respectively. After 100 times of repeated tests, the immobilized catalases on chitosan-clay and magnetic chitosan maintain over 50% and 60% of the original activity, respectively. The ease of catalase immobilization on low-cost matrices and good stability upon immobilization in the present study make it a suitable product for further use in the food industry. © 2013 Informa Healthcare USA, Inc.
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Keywords
Aluminum Silicates , Animals , Catalase , Cattle , Chitosan , Enzyme Stability , Enzymes, Immobilized , Hydrogen-Ion Concentration , Magnetite Nanoparticles , Microspheres , Resins, Synthetic , Temperature , Radioactive waste vitrification , Reusability , activated carbon , carbonyl derivative , catalase , chitosan , glutaraldehyde , magnetite nanoparticle , nanoparticle , Catalase , Comparative studies , Composite beads , Food industries , Magnetic chitosan , Modified chitosan , Optimum temperature , Storage stability , adsorption , article , catalysis , comparative study , covalent bond , enzyme immobilization , enzyme stability , food industry , pH , temperature , thermogravimetry , thermostability , Chitosan