发明名称 |
Immobilized enzyme membrane |
摘要 |
An immobilized enzyme membrane for use at the working face of an electrochemical electrode is prepared which comprises an asymmetrical membrane integrally formed from a skin layer substantially incapable of permeating an enzyme therethrough but capable of permeating a gas and a liquid, and a sponge layer having pores containing an enzyme immobilized therein by crosslinking and which pores intercommunicate with one another throughout the sponge layer and provide sufficient porosity for retaining a necessary amount of the enzyme. The immobilized enzyme membrane contains a large amount of enzyme, has good diffusion and permeability, and has stabilized enzyme activity for a prolonged period of time. Additionally, there is obtained a quick response time and good analytical precision when the immobilized enzyme membrane is used at the working face of an electrode of electrochemical measuring instruments.
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申请公布号 |
US4307195(A) |
申请公布日期 |
1981.12.22 |
申请号 |
US19790080026 |
申请日期 |
1979.09.28 |
申请人 |
HITACHI, LTD. |
发明人 |
KARASAWA, YOSHIHARU;KOHKAME, HISASHI |
分类号 |
C12N11/08;B01D57/00;B01D69/02;B32B5/18;C12M1/34;C12N11/00;C12N11/02;C12N11/04;C12N11/12;C12Q1/00;G01N27/333;G01N27/40;(IPC1-7):C12M1/40 |
主分类号 |
C12N11/08 |
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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