Document Detail


Immobilization of catalase on chitosan and amino acid- modified chitosan beads.
MedLine Citation:
PMID:  23316810     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Bovine liver catalase was covalently immobilized onto amino acid-modified chitosan beads. The beads were characterized with SEM, FTIR, TGA and the effects of immobilization on optimum pH and temperature, thermostability, reusability were evaluated. Immobilized catalase showed the maximal enzyme activity at pH 7.0 at 30°C. The kinetic parameters, K(m) and V(max), for immobilized catalase on alanine-chitosan beads and lysine-chitosan beads were estimated to be 25.67 mM, 27 mM and 201.39 μmol H(2)O(2)/min, 197.50 μmol H(2)O(2)/min, respectively. The activity of the immobilized catalase on Ala-CB and Lys-CB retained 40% of its high initial activity after 100 times of reuse.
Authors:
Esra Başak; Tülin Aydemir
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-15
Journal Detail:
Title:  Artificial cells, nanomedicine, and biotechnology (Print)     Volume:  -     ISSN:  2169-141X     ISO Abbreviation:  Artif Cells Nanomed Biotechnol     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101594777     Medline TA:  Artif Cells Nanomed Biotechnol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Science and Arts Faculty , Chemistry Department, Celal Bayar University, Muradiye, Manisa , Turkey.
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