Electrochemical enzyme biosensor

US5783056A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Norbert Hampp · Hersbruck, DE
• Anton Silber · Mering, DE
• Christoph Brauchle · Hersbruck, DE

Key dates

• Filing date: Nov 20, 1995
• Grant date: Jul 21, 1998
• Expiry date: Nov 20, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S435/817
• WIPO field: Biotechnology
• WIPO sector: Chemistry

Abstract

In the case of the electrochemical enzyme biosensor comprising noble metal electrodes, an electrochemical oxidation of pyridine nucleotides takes place, in particular of NADH. The noble metal electrodes have a microtexture rich in surface pores and having catalytic properties, as a result of which the overpotential required for electrochemical oxidation of the pyridine nucleotides is reduced. Owing to these microtextures, the surface area of an electrode is from 3 to 10 times larger than its geometric surface area.