Preparation of porous polyvinyl alcohol gel containing an immobilized enzyme
US4727030A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 25, 1985 |
| Grant date | Feb 23, 1988 |
| Priority date | — |
| Expiry date | Oct 25, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N11/04
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A porous gel containing an immobilized enzyme is prepared by mixing an aqueous solution of polyvinyl alcohol having a saponification degree of not lower than 95 mol% and an average polymerization degree of not lower than 1,000, with an enzyme or enzyme-producing cell, and activated carbon powder, pouring the mixture into a container of any desired form, gelating and molding the mixture by dehydrating it up to a dehydration ratio of not lower than 50%, immersing the resulting molding in water, and drying the immersed molding. Preferably, dehydrating is by leaving the mixture to stand at room temperature or a temperature of from 30.degree. C. to 40.degree. C. The enzyme or enzyme-producing cell may be mixed with or adsorbed on an inorganic or organic carrier. The dried molding may be granulated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.