Biosensor

A biosensor, comprising:na first working electrode on which is disposed a first biocatalyst with the property that it reacts with a specific ground substance;na second working electrode on which is disposed a second biocatalyst with the property that it also reacts with the specific ground substance; andat least one counter electrode for applying a voltage to the first working electrode and the second working electrode,wherein a rate of reaction of the first biocatalyst with the specific ground substance is different from a rate of reaction of the second biocatalyst with the specific ground substance, andwherein the first biocatalyst and the second biocatalyst are enzymes of the same type.

A biosensor, comprising:na first working electrode on which is disposed a first enzyme with the property that it reacts with a specific ground substance;na second working electrode on which is disposed a second enzyme with the property that it reacts with the specific ground substance; andat least one counter electrode for applying a voltage to the first working electrode and the second working electrode,wherein the second enzyme is obtained by genetic modification of the first enzyme so that a rate of reaction of the second enzyme with the specific ground substance is different from a rate of reaction of the first enzyme with the specific ground substance.

A biosensor in combination with a monitoring apparatus, wherein the biosensor comprises:na first working electrode on which is disposed a first biocatalyst with the property that it reacts with a specific ground substance;a second working electrode on which is disposed a second biocatalyst with the property that it also reacts with the specific ground substance; andat least one counter electrode for applying a voltage to the first working electrode and the second working electrode,wherein a reaction area on the first working electrode is different from a reaction area on the second working electrode, and

A biosensor in combination with a monitoring apparatus, wherein the biosensor comprises:na first working electrode on which is disposed a first biocatalyst with the property that it reacts with a specific ground substance;a second working electrode on which is disposed a second biocatalyst with the property that it also reacts with the specific ground substance; andat least one counter electrode for applying a voltage to the first working electrode and the second working electrode,wherein a total reaction activity of the first working electrode is different from a total reaction activity of the second working electrode, and

A monitoring apparatus, comprising:na first detection unit which detects a first signal value from a first working electrode obtained by applying a voltage between the first working electrode and a counter electrode, wherein disposed on the first working electrode is a first biocatalyst with the property that it reacts with a specific ground substance;a second detection unit which detects a second signal value from a second working electrode obtained by applying a voltage between the second working electrode and the counter electrode, wherein disposed on the second working electrode is a second biocatalyst with the property that it also reacts with the specific ground substance and has a rate of reaction different from that of the first biocatalyst;a correction unit which corrects a concentration of the specific ground substance that is calculated from the first signal value by the second signal value; andan output unit which outputs the corrected concentration of the specific ground substance.