Bioelectrochemical Determination at Histamine Dehydrogenase-based Electrodes
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概要
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Histamine dehydrogenase (HmDH) from Nocardioides simplex was used in constructing mediated bioelectrochemical systems for histamine oxidation using Os complexes as mediators. Amperometric histamine sensor was prepared by immobilizing a mixture of HmDH and a mediator, poly(1-vinylimidazole) complexed with [Os(2,2′-dipyridylamine)2Cl], with a crosslinker, poly(ethylene glycol) diglycidyl ether on a glassy carbon electrode. The electrode responded linearly to histamine over the range from 2 to 30 µmol dm−3, became free from the substrate inhibition observed in solution, and was almost insensitive to ascorbate at pH 7.0. On the other hand, the charge in coulometry using carbon felt electrodes was proportional to the histamine amount over the range from 0.1 to 5 nmol and the slope indicates a 4-electron oxidation (2-electron in the enzyme reaction and 2-electron in follow-up electrochemical reaction).
- 公益社団法人 電気化学会の論文
著者
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Kano Kenji
Division Of Applied Life Science Graduate School Of Agriculture Kyoto University
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Fujieda Nobutaka
Division Of Applied Life Sciences Graduate School Of Agriculture Kyoto University
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Shirai Osamu
Division Of Applied Life Science Graduate School Of Agriculture Kyoto University
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TSUJIMURA Seiya
Division of Applied Life Science, Graduate School of Agriculture, Kyoto University
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YAMADA Ryosuke
Division of Applied Life Science, Graduate School of Agriculture, Kyoto University
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TSUTSUMI Maiko
Division of Applied Life Science, Graduate School of Agriculture, Kyoto University
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