Enzyme stabilization with pre-superpolyamide or pre-fiber-forming polyamide oligomers
US6342381B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 1998 |
| Grant date | Jan 29, 2002 |
| Priority date | — |
| Expiry date | Feb 27, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3719
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Enzymes are stabilized with pre-superpolyamide or pre-fiber-forming polyamide oligomers having a polymer chain backbone containing only secondary amide linkages. The polyamide is combined with an enzyme such as in a liquid enzymatic composition or where the enzyme is in a non-fluid state such as a powder to improve stability and shelf-life of the enzyme. The polyamide oligomer is a condensation product of at least one dibasic acid and at least one diamine. The dibasic acid may be a saturated or unsaturated C3-C10 dicarboxylic acid, and the diamine may be 1,2-diaminoethane, 1,3-diaminopropane, 1,4-diaminobutane, 1,5-diaminopentane, 1,6-diaminohexane, 1,8-diaminooctane or 1,10-diaminodecane. Enzymes stabilized include proteases, xylanases, amylases, cellulases and lipases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.