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US 4,617,272 AGranted
Enzyme drying process
AssigneeEconomics Laboratory, Inc.
InventorsMarda K. Kirkwood, Keith E. Olson
Life of this patent
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Abstract
A process for removing the water from an enzyme-containing aqueous medium is disclosed which comprises spraying the medium onto a heated, fluidized bed of inert substrate particles and recovering a dry enzyme concentrate therefrom.
Claims14
A process for removing the water from an enzyme-containing aqueous medium comprising:
- forming a heated fluidized bed of inert particles by means of a gas stream wherein said fluidized bed is maintained at about 100.degree.-180.degree. F.
- contacting said heated inert particles with a spray of an enzyme containing medium, wherein said medium is sprayed at a temperature at about 40.degree.-100.degree. F. resulting in the evaporation of the water and the deposition on said inert particles of a dry powder comprising said enzyme;
- and
- separating said dry enzyme-containing powder from said particles.
1 more element
A process for removing the water from an aqueous medium containing a protease enzyme comprising:
- forming a fluidized bed of polypropylene beads heated to about 110.degree.-140.degree. F. by means of an air stream;
- contacting said heated beads with an about 45.degree.-75.degree. F. spray of an enzyme containing medium resulting in the evaporation of the water and the deposition on the particles of a dry powder comprising said enzyme;
- and
- separating said dry enzyme-containing powder from said particles, wherein said dry powder retains at least about 60% of the initial enzymatic activity of the medium.
1 more element
Dependencies are inferred from the claim text.