Determination of Rutin in Green Tea Infusions Using Square‐Wave Voltammetry with a Rigid Carbon‐Polyurethane Composite Electrode | Zendy

Malagutti Andréa R. | Zendy; Zuin Vânia G. | Zendy; Cavalheiro Éder T. G. | Zendy; Mazo Luiz H. | Zendy

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Determination of Rutin in Green Tea Infusions Using Square‐Wave Voltammetry with a Rigid Carbon‐Polyurethane Composite Electrode

Author(s) -

Malagutti Andréa R.,

Zuin Vânia G.,

Cavalheiro Éder T. G.,

Mazo Luiz H.

Publication year - 2006

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.200603496

Subject(s) - rutin , electrode , square wave , detection limit , electrochemistry , cyclic voltammetry , polyurethane , carbon fibers , adsorption , materials science , voltammetry , composite number , glassy carbon , chemistry , carbon paste electrode , nuclear chemistry , chromatography , composite material , organic chemistry , antioxidant , physics , quantum mechanics , voltage

This paper presents a comparative study on the electrochemical behavior of the flavonoid rutin on a rigid carbon‐polyurethane composite electrode and on a glassy carbon electrode. The electrochemical oxidation reaction of rutin was found to be quasireversible and affected by adsorption on the electrode surface. A square‐wave voltammetric method was developed for determination of rutin in green tea infusion samples using the RCPE electrode and data treatment by a deconvolution procedure. The detection limit achieved in buffered solutions was 7.1×10 −9 mol L −1 using the RCPE and 1.7×10 −8 mol L −1 using the GC electrode the average reproducibility for five determinations being 3.5%.

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