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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0263564 (1988-10-27) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 348 인용 특허 : 2 |
Electrochemical biosensor systems or apparatus, components thereof, and methods for quantitatively measuring or assaying concentrations of selective substrates or metabolites in aqueous media as a function of electrochemical response to hydrogen peroxide concentration, using immobilized enzyme elect
Electrochemical biosensor systems or apparatus, components thereof, and methods for quantitatively measuring or assaying concentrations of selective substrates or metabolites in aqueous media as a function of electrochemical response to hydrogen peroxide concentration, using immobilized enzyme electrode means selective for the substrate or metabolite being measured.
An amperometric assay method for measuring the concentration of a hydrogen peroxide-yielding substrate in an aqueous sample as a function of amperometric response to enzymatically generated hydrogen peroxide, to provide a direct measurement of the concentration of said substrate, which comprises: di
An amperometric assay method for measuring the concentration of a hydrogen peroxide-yielding substrate in an aqueous sample as a function of amperometric response to enzymatically generated hydrogen peroxide, to provide a direct measurement of the concentration of said substrate, which comprises: diffusing a sample containing said substrate through a biocompatible, outer permeable membrane of polyurethane/butadiene resin which selectively restricts the passage of undesired substances which interfere with quantitative H2O2 detection and through an inner permeable membrane of a polyvinyl acetate and polyethylene glycol modified poly(styrene maleic anhydride) polymer having at least one immobilized enzyme therein, an enzyme having amino groups covalently bonded to the anhydride polymer groups in said polymer, said inner membrane being in interfacial contact with said outer membrane, said enzyme being selective to the substrate to be assayed and, to catalytically convert said substrate by means of an oxidation/reduction mechanism, and thereupon release H2O2 detectable at a planar electrode which is disposed under said inner membrane, which detector electrode senses H2O2 concentration as a measure of the concentration of the substrate being assayed.
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