کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
185443 459597 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Glucose oxidation catalyzed by FAD-dependent glucose dehydrogenase within Os complex-tethered redox polymer hydrogel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Glucose oxidation catalyzed by FAD-dependent glucose dehydrogenase within Os complex-tethered redox polymer hydrogel
چکیده انگلیسی

FAD-dependent glucose dehydrogenase (FAD-GDH) from Aspergillus terreus was co-immobilized on a glassy carbon (GC) electrode surface with a poly(1-vinylimidazole)-tethered Os(2,2′-bipyridine)2Cl complex as a redox mediator. The steady-state catalytic current for glucose oxidation was 2.6 mA cm−2 at pH 7 and 25 °C. This value increased 1.6-fold after oxidative deglycosylation of the enzyme, which is the highest value so far reported for a GC-electrode-based glucose anode. The deglycosylation process did not decrease the stability of the FAD-GDH dissolved in the buffer solution and immobilized within the hydrogel. A 10% decrease in the catalytic current was observed after 24 h continuous operation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 136, 1 August 2014, Pages 537–541
نویسندگان
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