The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2003
Filed:
Aug. 29, 2000
Novozymes A/S, Bagsvaerd, DK;
Abstract
An immobilized enzyme is prepared for use in organic mediums essentially devoid of free water. An enzyme-containing liquid medium is contacted with a particulate porous carrier which preferably has a particle size of 200-1000 &mgr;m and a surface area of 20-1000 m /g to adsorb the enzyme on the carrier, and volatile components of the liquid medium contained by the carrier are removed. The carrier may have a hydrophilic surface, and an amount of liquid medium is used to prevent agglomeration of the carrier. Alternatively, the carrier has a hydrophobic surface, and the addition of a hygroscopic substance suppresses agglomeration of the carrier by absorbing excess liquid. The hygroscopic substance may be removed during the removal of volatile components. Contacting of the enzyme-containing liquid and carrier can be in a fluidized bed where immobilization and removing volatile components are conducted simultaneously, or contacting can be in mixer followed by removing volatile components in a fluidized bed. The enzyme-containing liquid may be atomized onto the carrier in the fluidized bed or in the mixer. Enzymes immobilized include lipase, and the immobilized lipase can be used in trans-esterification reactions.