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Immobilized enzyme electrodes

  • US 4,970,145 A
  • Filed: 01/20/1988
  • Issued: 11/13/1990
  • Est. Priority Date: 05/27/1986
  • Status: Expired due to Term
First Claim
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1. An enzyme electrode for indicating amperometrically the catalytic activity of an enzyme in the presence of a liquid containing a substance acted upon by said enzyme and of an electric potential on the electrode, said electrode comprising(a) an electrically conductive support member comprising a porous electrically conductive layer formed of carbon particles in intimate surface contact with finely divided particles of a platinum group metal and bonded together by resin, said layer constituting a substantially heterogeneous porous substrate consisting essentially of resin-bonded metalized carbon particles with said metal particles distributed substantially uniformly therethroughout, and(b) a catalytically active quantity of said enzyme adsorbed or immobilized onto the surfaces of said porous substrate.

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