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Synthesis and characterization of both ionically and enzymatically cross-linkable alginate

Paper ID Volume ID Publish Year Pages File Format Full-Text
2029 98 2007 7 PDF Available
Title
Synthesis and characterization of both ionically and enzymatically cross-linkable alginate
Abstract

Alginate with phenol moieties in the polymer side chains was synthesized through the conjugation reaction of alginate and tyramine. Immersing an aqueous solution of the alginate containing horseradish peroxidase into a solution containing H2O2 caused the solution to gel via peroxidase-catalyzed oxidative coupling of the phenols. In addition, alginate prepared under appropriate reaction conditions retained the attractive properties associated with unmodified alginate; spherical gel beads were formed by dropping an aqueous alginate solution (1.0 wt.%) into a solution containing calcium ions. The oxidative coupling of the phenols was effective for suppressing the destabilization of the alginate gel resulting from a loss of bonding between the divalent cations and alginate. The mechanical properties of the resultant gels were influenced by the preparation conditions of the alginate and the type of cross-linking.

Keywords
Alginate; Peroxidase; Enzyme-catalyzed gelation; Oxidative coupling; Immobilization
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Synthesis and characterization of both ionically and enzymatically cross-linkable alginate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 3, Issue 4, July 2007, Pages 495–501
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
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Price was $35.95
You save - $31
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