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pubmed-article:19908905rdf:typepubmed:Citationlld:pubmed
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pubmed-article:19908905pubmed:dateCreated2009-11-13lld:pubmed
pubmed-article:19908905pubmed:abstractTextThis paper describes a batch-type coulometric d-fructose biosensor based on direct electron transfer reaction of d-fructose dehydrogenase (FDH) adsorbed on a porous carbon electrode surface. The adsorbed-FDH electrodes catalyzed the electrochemical two-electron oxidation of d-fructose to 5-keto-d-fructose without a mediator. Nanostructured carbon particle-modified electrodes were used for the coulometric d-fructose biosensor to enhance the catalytic current density. The electric charge for the d-fructose oxidation gained by the biocoulometric measurement was in good agreement with the theoretical value corresponding to d-fructose amount in the range from 1 to 100 mM with a sample volume of 1 muL. This method is also applicable to the determination of several oligo/polysaccharides containing the d-fructose unit, in combination with specific hydrolases to yield d-fructose. An example was demonstrated by sucrose determination in which the electrode modified with FDH and invertase was used as a working electrode. To address the problem of electroactive interferences such as ascorbate, the electric charge at the FDH-free electrode was subtracted from the total charge obtained at the FDH-adsorbed electrode. The d-fructose concentrations in several beverages were successfully determined with this method.lld:pubmed
pubmed-article:19908905pubmed:languageenglld:pubmed
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pubmed-article:19908905pubmed:statusMEDLINElld:pubmed
pubmed-article:19908905pubmed:monthNovlld:pubmed
pubmed-article:19908905pubmed:issn1520-6882lld:pubmed
pubmed-article:19908905pubmed:authorpubmed-author:KanoKenjiKlld:pubmed
pubmed-article:19908905pubmed:authorpubmed-author:TsujimuraSeiy...lld:pubmed
pubmed-article:19908905pubmed:authorpubmed-author:KamitakaYujiYlld:pubmed
pubmed-article:19908905pubmed:authorpubmed-author:NishinaAkikoAlld:pubmed
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pubmed-article:19908905pubmed:day15lld:pubmed
pubmed-article:19908905pubmed:volume81lld:pubmed
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pubmed-article:19908905pubmed:authorsCompleteYlld:pubmed
pubmed-article:19908905pubmed:pagination9383-7lld:pubmed
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pubmed-article:19908905pubmed:year2009lld:pubmed
pubmed-article:19908905pubmed:articleTitleCoulometric D-fructose biosensor based on direct electron transfer using D-fructose dehydrogenase.lld:pubmed
pubmed-article:19908905pubmed:affiliationDivision of Applied Life Science, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan. seiya@kais.kyoto-u.ac.jplld:pubmed
pubmed-article:19908905pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:19908905pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed