Croatica Chemica Acta, Vol. 83 No. 2, 2010.
Izvorni znanstveni članak
The Process of Electrooxidation of Quercetin 3,4'-di-O-β-Glucopyranoside at Glassy Carbon Electrode
Boguslaw Pierozynski
; Department of Chemistry, Faculty of Environmental Management and Agriculture, University of Warmia and Mazury in Olsztyn, Plac Lodzki 4, 10-727 Olsztyn, Poland
Danuta Zielinska
; Department of Chemistry, Faculty of Environmental Management and Agriculture, University of Warmia and Mazury in Olsztyn, Plac Lodzki 4, 10-727 Olsztyn, Poland
Sažetak
The present paper reports electrochemical and UV-VIS spectroscopic studies on the process of electrooxidation of quercetin 3,4'-di-O-β-glucopyranoside (Q 3,4'-diglc) molecule, at glassy carbon electrode
surface in 0.1 M sodium acetate – acetic acid buffer in 90 % methanol solution. The process starts at 3'-OH group (ring B), followed by oxidation of 5,7-dihydroxyl group in ring A. As a result of electrochemical reactions, the surface area of glassy carbon (GC) electrode becomes extensively blocked by Q 3,4'-diglc oxidation products.
Ključne riječi
Q 3; 4'-diglc electrooxidation; cyclic voltammetry; impedance spectroscopy; UV-VIS spectroscopy
Hrčak ID:
56015
URI
Datum izdavanja:
15.7.2010.
Posjeta: 1.403 *