Methods of drying biological products
US5035900A · kind A · utility
7Cited by
0References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1989 |
| Grant date | Jul 30, 1991 |
| Priority date | — |
| Expiry date | Aug 24, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/38672
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Enzymes and other biologically produced materials are recovered from the fermentation broth or other liquor in which they are provided initially and simultaneously distributed throughout particles of a polymeric matrix by dissolving the polymer in the liquor, dispersing the resultant polymer solution in a non-aqueous liquor in the presence of a stabiliser, and azeotroping the dispersion to produce either dry beads or a dispersion of small particles in the non-aqueous liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.