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The methylene blue-D-glucose-O2 system. Oxidation of D-glucose by methylene blue in the presence and the absence of oxygen

✍ Scribed by L'ubica Adamčíková; Katarína Pavlíková; Peter Ševčík

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
139 KB
Volume
31
Category
Article
ISSN
0538-8066

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✦ Synopsis

] were observed during the methylene blue catalyzed oxidation of D-glucose by O 2 in alkaline aqueous solutions. The kinetics of anaerobic oxidation of D-glucose (GH) by methylene blue (MB ϩ ) was investigated in a closed system. The reaction was first order with respect to the concentration of methylene blue and the observed rate constant increased with GH concentration in a saturated mode. The oxidation proceeds via complex formation between GH and MB ϩ and the rate constant of the decay of the complex was determined. The oxidation process was also investigated under aerobic conditions and the reaction rates and reaction orders were determined by spectrophotometric measurements of the disappearance of MB ϩ and by amperometric determination of O 2 consumption.

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