A Hybrid L-Tyrosine Sensor Using an Enzyme and A Bacterial Co₂ Sensor

Hiroaki Suzuki Fujitsu Laboratories Ltd., 10-1 Morinosato-Wakamiya, Atsugi, 243-01, Japan

Eiichi Tamiya Fujitsu Laboratories Ltd., 10-1 Morinosato-Wakamiya, Atsugi, 243-01, Japan; Research Center for Advanced Science and Technology, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153, Japan

Isao Karube Fujitsu Laboratories Ltd., 10-1 Morinosato-Wakamiya, Atsugi, 243-01, Japan; Research Center for Advanced Science and Technology, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153, Japan

Abstract

An L-tyrosine sensor consisting of immobilized L-tyrosine decarboxylase and an amperometric bacterial CO₂ sensor was developed, and evaluated. the optimum pH was 5.5 and the optimum temperature was between 32°C and 34°C. A linear calibration curve was obtained in L-tyrosine concentrations between 10 μM and 50 μM.

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A Hybrid L-Tyrosine Sensor Using an Enzyme and A Bacterial Co₂ Sensor

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A Hybrid L-Tyrosine Sensor Using an Enzyme and A Bacterial Co2 Sensor

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A Hybrid L-Tyrosine Sensor Using an Enzyme and A Bacterial Co₂ Sensor