Calcium alginate gel as encapsulation matrix for coimmobilized enzyme systems

• Published in: Applied biochemistry and biotechnology Vol. 110; no. 1; pp. 53 - 60
• Main Authors: BLANDINO, A, MACIAS, M, CANTERO, D
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer 01.07.2003; Springer Nature B.V
• Subjects: Alginates - chemistry; Biochemistry; Biological and medical sciences; Calcium; Calcium - chemistry; Catalase - chemistry; Enzymes; Enzymes - chemistry; Enzymes, Immobilized; Fundamental and applied biological sciences. Psychology; Gels - chemistry; Glucose; Glucose - chemistry; Glucose Oxidase - chemistry; Glucuronic Acid - chemistry; Hexuronic Acids - chemistry; Hydrogen Peroxide - chemistry; Kinetics; Models, Chemical; Studies; Time Factors; gel capsules; coimmobilization; gel beads; Calcium alginate; catalase; glucose oxidase
• ISSN: 0273-2289; 1559-0291; 0273-2289
• DOI: 10.1385/ABAB:110:1:53

Encapsulation within calcium alginate gel capsules was used to produce a coimmobilized enzyme system. Glucose oxidase (GOD) and catalase (CAT) were chosen as model enzymes. The same values of Vmax and Km app for the GOD encapsulated system and for the GOD-CAT coencapsulated system were calculated. When gel beads and capsules were compared, the same catalyst deactivation sequence for the two enzymes was observed. However, when capsules were employed as immobilization support, GOD efficiencies were higher than for the gel beads. These results were explained in terms of the structure of the capsules.