Enzyme immobilization

• Main Author: BRANNER-JORGENSEN; SVEN
• Format: Patent
• Language: English
• Published: 05.05.1981
• Subjects: BEER; BIOCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS THEREOF; CULTURE MEDIA; DAIRY PRODUCTS, e.g. MILK, BUTTER, CHEESE; ENZYMOLOGY; FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE; FOODS OR FOODSTUFFS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HUMAN NECESSITIES; MAKING THEREOF; METALLURGY; MICROBIOLOGY; MICROORGANISMS OR ENZYMES; MILK OR CHEESE SUBSTITUTES; MUTATION OR GENETIC ENGINEERING; PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS; SPIRITS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; VINEGAR; WINE

An immobilized enzyme granular product suitable for use in expanded and fluidized bed operations is formed by gelatine coating a dense particulate material, e.g., a mineral oxide, and hardening the coating with glutaraldehyde, then treating the coated particles with a pasty mixture of an enzyme substance and polyethylene imine, and thereafter treating the mixture with glutaraldehyde, followed by granulating and drying. Sand and titanium dioxide are preferred particulate materials. Lactase, urease, and inulinase are preferred enzymes, preferably in the form of whole or homogenized microbial cells.