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4-ferrocenylphenol as an electron transfer mediator in PQQ-dependent alcohol and glucose dehydrogenase-catalyzed reactionsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Razumiene J., Meskys R., Gureviciene V., Laurinavicius V., Reshetova M.D., Ryabov A.D.
- Журнал: Electrochemistry Communications
- Том: 2
- Номер: 5
- Год издания: 2000
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 307
- Последняя страница: 311
- DOI: 10.1016/S1388-2481(00)00024-2
- Аннотация: Enzyme electrodes containing pyrroloquinoline quinone (PQQ)-dependent alcohol dehydrogenase (ADH) and glucose dehydrogenase (GDH) as a biological component in combination with 4-ferrocenylphenol (I) as an electron transfer mediator between PQQ and a carbon electrode were constructed and used for measurements of ethanol and D-glucose. Analysis of the current response of the carbon electrodes modified with 1 at different pH and potentials demonstrated that 1 participates in the bioelectrocatalytic oxidation of D-glucose or ethanol. The biosensors showed the highest response at pH 5.5 and the working potentials of 0.3 and 0.4 V (versus Ag \AgCl) for ADH and GDH, respectively. The electrocatalytic processes under such conditions at these electrodes are characterized by the apparent values of the Michaelis constants K-M(app) of 7.1 and 13 mM and the maximal current density j(max) 40 and 26 mu A cm(-2) for ethanol and D-glucose, respectively. No electrocatalysis was found when glucose oxidase from Aspergillus niger was used instead of GDH. (C) 2000 Elsevier Science S.A. All rights reserved.
- Добавил в систему: Решетова Марина Дмитриевна