Electrochemical selectivity enhancement by using monosuccinyl β-cyclodextrin as a dopant for multi-wall carbon nanotube-modified glassy carbon electrode in simultaneous determination of quercetin and rutin

被引：16
|
作者：
Jin, Joon-Hyung [1 ]
Kim, Hyunmyung [1 ]
Jung, Seunho [1 ]
机构：
[1] Konkuk Univ, BioMol Informat Ctr, Dept Biosci & Biotechnol, Seoul 143701, South Korea
来源：
BIOTECHNOLOGY LETTERS | 2009年 / 31卷 / 11期
关键词：
Multi-wall carbon nanotube; Quercetin; Rutin; Square wave voltammetry; Succinyl-beta-cyclodextrin; VOLTAMMETRY; FLAVONOIDS; ACID;
D O I：
10.1007/s10529-009-0066-6
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Monosuccinyl beta-cyclodextrin (succinyl-beta-CD) was synthesized and the selectivity to quercetin and rutin of the succinyl-beta-CD-modified, multi-wall carbon nanotube (MWNT)-coated, glassy carbon electrode [(succinyl-beta-CD + MWNT)/GCE] was investigated. H-1 NMR and MALDI-MS data confirmed molecular structure of the synthesized succinyl-beta-CD. As a dopant in carboxylated MWNT-modified electrode, succinyl-beta-CD clearly separated the peak potential (E-p) of quercetin from that of rutin. The measured peak potential separation (Delta E-p) was 110 mV. More favorable complexation between succinyl-beta-CD and quercetin may enhance relative selectivity to quercetin of the (succinyl-beta-CD + MWNT)/GCE in quercetin-rutin mixture as compared to the beta-CD-modified GCE.
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页码：1739 / 1744
页数：6
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