Supported polyionic hydrogels containing biologically active mat

Details Supported polyionic hydrogels containing biologically active mat Supported polyionic hydrogels containing biologically active mat

1995-03-22

1997-07-15

Naff, David M.

Chemistry: molecular biology and microbiology

Carrier-bound or immobilized enzyme or microbial cell;...

Enzyme or microbial cell is immobilized on or in an organic...

435177, 435178, 435182, 435397, 436529, 436530, 530813, 530814, C12N 1112, C12N 1110, C12N 500, G01N 33544

Patent

active

056482523

ABSTRACT:
A supported polyionic hydrogel containing biologically active material is epared by impregnating into a porous support material a solution of anionic polysaccharide, a solution of cationic polysaccharide and a biologically active material. The anionic polysaccharide and the cationic polysaccharide react with each other to form a hydrogel containing the biologically active material. The hydrogel may be dried such as by lyophilization. The biologically active material can be in either polysaccharide solution or in another solution impregnated into the porous support material. A paper material or a textile material may be used as the porous support material. Preferably, the anionic polysaccharide is xanthan, dicarboxystarch or dicarboxycellulose and the cationic polysaccharide is chitosan. Especially preferred is a hydrogel formed from xanthan and chitosan. Biologically active materials in the hydrogel can be enzymes, antibody-producing cells or water-soluble drugs such as the antimicrobial agent, chlorohexidine.

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