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：15

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.

引用

页码：1739 / 1744

页数：6

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