发明名称 |
Stabilization of intracellular enzymes. |
摘要 |
The subject invention concerns a process for stabilizing intact or ruptured microbial cells having active enzymes associated therewith. Specifically exemplified is a process for stabilizing glucose isomerase producing cells of a microorganism belonging to the genus Ampullariella in the invention process the whole or ruptured microbial cells are contacted with a partially modified cationic polyelectrolyte, e.g., a partially modified polyamine, to stabilize and flocculate the cells. it is critical that the polyelectrolyte be partially modified; a fully modified or non-modified polyelectrolyte will not give the surprising beneficial results of the invention process. The flocculated cells are further stabilized by encapsulation with a partially modified cationic polyelectrolyte. The encapsulation can be done prior to or after the flocculated cells are cross-linked. The net effect is manifested by a dramatic increase in the half-life of the enzyme, thus. leading to a more effective use of the immobilized enzyme. |
申请公布号 |
EP0195304(A2) |
申请公布日期 |
1986.09.24 |
申请号 |
EP19860102808 |
申请日期 |
1986.03.04 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
CHENG, ROBERTA C.;MCCOY, KAREN M.;HOUTCHENS, ROBERT A.;MOLL, NORMAN G. |
分类号 |
C12N1/04;C12N9/96;C12N11/02;C12N11/04;C12P19/02;C12P19/24;C12R1/01 |
主分类号 |
C12N1/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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