METHOD OF PRODUCTION OF ENZYME PREPARATIONS Russian patent published in 1999 - IPC

FIELD: biotechnology, biochemistry. SUBSTANCE: method involves extraction of enzyme-containing raw, precipitation of enzymes from extract with alcohol or acetone and separation of a precipitate. Enzyme is dried by washing out with a mixture of liquid carbon dioxide and acetone taken at mass ratio from 3:7 to 7:3 under above atmosphere pressure followed by pressure drop to atmosphere value. This ensures to regenerate alcohol or acetone from solution in a mixture of fluidized gases and exclude loss of reagents in environment during the end product drying. EFFECT: improved method of production, improved ecology.