Immobilization of enzymes with a starch-graft copolymer

US3985616A · kind A · utility

Assignee

• The United States of America, as represented by the Secretary of Agriculture · US

Inventors

• Mary Ollidene Weaver · Peoria, US
• Edward B. Bagley · Morton, US
• George F. Fanta · Peoria, US
• William M. Doane · Morton, US

Key dates

• Filing date: Sep 8, 1975
• Grant date: Oct 12, 1976
• Expiry date: Sep 8, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Enzymes are immobilized by entrappment or by covalent bonding with alkali saponified gelatinized-starch-polyacrylonitrile graft polymers. The polymers absorb amounts of water equaling up to more than 1000 times their own weight. In addition to immobilizing enzymes, the polymers find many applications including their incorporation into products such as disposable diapers, surgical pads and sheets, and paper towels.