Differences in Oxidation Mechanism of Selected Bioflavonoids, UV-Vis and IR Spectroelectrochemical Study

0490089 - ÚFCH JH 2020 RIV CZ eng C - Conference Paper (international conference)
Sokolová, Romana - Fiedler, Jan - Ramešová, Šárka - Kocábová, Jana - Degano, I. - Quinto, A. - Křen, Vladimír
Differences in Oxidation Mechanism of Selected Bioflavonoids, UV-Vis and IR Spectroelectrochemical Study.
XXXVIII. Moderní elektrochemické metody. Sborník přednášek. Ústí nad Labem: Best Servis, 2018 - (Navrátil, T.; Fojta, M.; Schwarzová, K.), s. 212-216. ISBN 978-80-905221-6-9.
[Moderní elektrochemické metody /38./. Jetřichovice (CZ), 21.05.2018-25.05.2018]
R&D Projects: GA ČR(CZ) GA18-00150S; GA ČR GA17-03868S
Institutional support: RVO:61388955 ; RVO:61388971
Keywords : oxidation * flavonoids * decomposition
OECD category: Analytical chemistry; Biophysics (MBU-M)

The oxidation of selected bioflavonoids (quercetin, rhamnazin, fisetin, rhamnetin, taxifolin, luteolin, silybin and 2,3-dehydrosilybin) was studied by electrochemical and spectroscopic methods. The oxidation mechanism and formation of oxidation products depends on the chemical structure. Only small differences in the chemical structure of compounds with flavone, flavanone and flavonol motif result in extremely variable oxidation pathways and products. Products of oxidation and further decomposition were determined by HPLC-ESIMS/MS and HPLC-DAD.
Permanent Link: http://hdl.handle.net/11104/0284381