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Sensitive Voltammetric Determination of Natural Flavonoid Quercetin on a Disposable Graphite Lead

Sensitive Voltammetric Determination of Natural Flavonoid Quercetin on a Disposable Graphite Lead

Authors :
Dai Long Vu
Simona Žabčíková
Libor Červenka
Bensu Ertek
Yusuf Dilgin
Source :
Food Technology and Biotechnology, Vol 53, Iss 4, Pp 379-384 (2015)
Publication Year :
2015
Publisher :
University of Zagreb Faculty of Food Technology and Biotechnology, 2015.

Abstract

In this paper, a pencil graphite electrode was pretreated using chronoamperometry technique in phosphate buffer solution (pH=7.0) for sensitive determination of quercetin. Oxidation of quercetin was investigated using pretreated pencil graphite electrode and anodic stripping differential pulse voltammetry. Under optimal conditions, the anodic current of quercetin exhibited linear response to its concentration in the range from 0.001 to 1.5 μmol/L with the limit of detection of 0.3·10–3 μmol/L. The proposed method was successfully applied for the determination of quercetin in cranberry and blackcurrant juices with recovery rate from 93.2 to 94.7 %. Solid-phase extraction was found to be necessary prior to voltammetric determination of quercetin in fruit juice samples using pretreated pencil graphite electrode.

Details

Language :
English
ISSN :
13309862 and 13342606
Volume :
53
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Food Technology and Biotechnology
Publication Type :
Academic Journal
Accession number :
edsdoj.b43e79b590814e55949e1743c25fde53
Document Type :
article
Full Text :
https://doi.org/10.17113/ftb.53.04.15.4176