Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Selective Monitoring of Rutin and Quercetin based on a Novel Multi-wall Carbon Nanotube-coated Glassy Carbon Electrode Modified with Microbial Carbohydrates α-Cyclosophorohexadecaose and Succinoglycan Monomer M3

  • Jin, Joon-Hyung (Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University) ;
  • Cho, Eun-Ae (Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University) ;
  • Kwon, Chan-Ho (Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University) ;
  • Jung, Seun-Ho (Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University)
  • Received : 2010.03.23
  • Accepted : 2010.05.04
  • Published : 2010.07.20
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Abstract

Multi-wall carbon nanotube (MWNT)-modified glassy carbon electrodes (GCE) were prepared for simultaneous determination of rutin and quercetin. Microbial carbohydrates, $\alpha$-cyclosophorohexadecaose ($\alpha$-C16) and succinoglycan monomer M3 (M3) were doped into MWNTs to prepare a $\alpha$-C16-doped MWNT-modified GCE (($\alpha$-C16 + MWNTs)/GCE) and a M3-doped MWNT-modified GCE ((M3 + MWNTs)/GCE), respectively. The sensitivities of the ($\alpha$-C16 + MWNTs)/GCE to rutin and quercetin were 34.7 ${\mu}A\cdot{\mu}M^{-1}{\cdot}cm^{-2}$ and 18.3 ${\mu}A\cdot{\mu}M^{-1}{\cdot}cm^{-2}$, respectively, in a linear range of $2\sim8{\mu}M$ at pH 7.2. The sensitivities of the (M3 + MWNTs)/GCE was 2.44 ${\mu}A\cdot{\mu}M^{-1}{\cdot}cm^{-2}$ for rutin and 7.19 ${\mu}A\cdot{\mu}M^{-1}{\cdot}cm^{-2}$ for quercetin without interference.

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