Immobilization of the epoxide hydrolase from Aspergillus niger

• Published in: Biotechnology letters Vol. 23; no. 19; pp. 1633 - 1639
• Main Authors: KARBOUNE, S, AMOURACHE, L, NELLAIAH, H, MORISSEAU, C, BARATTI, J
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer 01.10.2001; Springer Nature B.V
• Subjects: Adsorption; Aspergillus niger; Biological and medical sciences; Biotechnology; Cellulose; Enzymes; Food science; Fundamental and applied biological sciences. Psychology; Immobilization of enzymes and other molecules; Immobilization techniques; Methods. Procedures. Technologies; polypropylene; Fungi; Enzymatic activity; Enzyme; Aspergillus niger; Ether hydrolases; Immobilization; Hydrolases; Fungi Imperfecti; Kinetic parameter; Epoxide hydrolase; Physicochemical properties; Thallophyta
• ISSN: 0141-5492; 1573-6776
• DOI: 10.1023/A:1011940802411

Three methods for the immobilization of the epoxide hydrolase from the fungus Aspergillus niger were tested. The highest immobilization yield (90%) and retention of activity (65%) were obtained by adsorption onto DEAE-cellulose compared to adsorption onto hydrophobic porous polypropylene and covalent linkage using Eupergit resin. The enzymatic properties of the immobilized enzyme were similar to those of the free enzyme with respect to the effect of temperature and pH on both activity and stability as well as the effect of solvent (DMF) on activity. The kinetic parameters were affected leading to lower K^sub M(app)^ and higher Vm^sub (app)^.[PUBLICATION ABSTRACT]