Stopped-flow-optical Absorption and -electron Spin Resonance Studies on Short-lived Quercetin Semiquinone Radical Produced by Redox Reactions with O2−• Radical in DMSO

Abstract

The stopped-flow-optical absorption and -ESR spectra of a quercetin (QueH2) derived semiquinone anion radical (Que−•, half-life time ∼31 ms) were detected by mixing the O2−• radical and QueH2 in di...