Patent ID: 6051411
Filing Date: 2000-04-18
Classification: C02F,C12N,Y02W

Abstract:
A method for the immobilization of a microorganism, comprising(a) providing an aqueous solution of chitosan and an acid, wherein the concentration of chitosan is 1-1.5%/ w/v,(b) adding a microorganism, to the solution, while maintaining the pH in a range of 4.0 to 5.0 to form a mixture,(c) adding the mixture dropwise to an aqueous solution of lignosulphonate, wherein the concentration of lignosulphonate is 8-12% w/v, while maintaining the pH in the range of 7.0 to 8.0 by means of a buffer, to form beads of a chitosan/lignosulphonate matrix membrane encapsulating the microorganism, and(d) stirring to harden the beads.