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Biosensor

  • US 6,268,161 B1
  • Filed: 05/11/1999
  • Issued: 07/31/2001
  • Est. Priority Date: 09/30/1997
  • Status: Expired due to Fees
First Claim
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1. A biosensor 10 for measuring the concentration of an organic molecule, the biosensor comprising:

  • a polymeric hydrogel that changes its osmotic pressure in proportion to the concentration of a byproduct;

    an oxidoreductase enzyme immobilized in the hydrogel, the oxidoreductase enzyme catalyzing a chemical reaction consuming the organic molecule and producing the byproduct, thereby causing the hydrogel to change its osmotic pressure;

    a means for measuring the osmotic pressure of the hydrogel; and

    a means for reporting the concentration of the organic molecule based on the measured osmotic pressure of the hydrogel.

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