Unitika Ltd.

Lion Corporation

Takeshi Kawabe

Takeaki Iida

Masayoshi Nakamura

Nobuo Johna

Tsutomu Ishikawa

An enzyme sensor comprising an enzyme acting specifically on a substrate and a transducer for converting the quantitative change of a substance or heat which is produced or consumed during an enzyme reaction to an electrical signal, wherein the enzyme is glucokinase is disclosed. By the enzyme sensor of the present invention, an accurate determination of an amount of glucose in a sample is possible as well as an accurate determination of adenosine-5'-triphosphate (ATP). A response time of the sensor is almost constant after a long-term use and a decrease of the detecting ratio is very small.

Enzyme sensor using immobilized glucokinase

A laser emission material containing a solid laser active medium dispersed in a melt molded product matrix of a zeolite.

Laser emission material

Disclosed is an enzyme sensor for determining a concentration of glutamate comprising an immobilize enzyme acting specifically to a substrate and a transducer for converting the quantitative change of a substance or heat which is produced or consumed during an enzyme reaction to an electrical signal, wherein the enzyme is glutamine synthetase and the transducer is the pH glass electrode or ion-sensitive field-effect transistor (ISFET). The enzyme sensor can be miniaturized and can accurately determine a concentration of glutamate even when it is low.

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Tokyo, Japan

Takeshi Kawabe