Obtinerea si caracterizarea de suporturi biocompatibile sub forma de microparticule si filme de chitosan-alginat cu ureaza imobilizata

摘要

This study focuses on the preparation and characterization of the microparticles and films from chitosan,alginate and alginate/chitosan in relation to their application as supports for the urease immobilization.These enzymes are imobilized by using the following adsorbtion on solid supports methods:direct immersion of the support into enzymatic solutions;direct attachment of the carbodiimide derivate or sodium citrate activated supports.Carbodiimide activated supports have proved to be the most appropriate imobilization procedure.In this case the immobilization yields exceed 70%.