Quercetin is a natural antioxidant. Due to its quenching effect on free radicals, we expect that quercetin has consistent effects on delayed luminescence (DL) of cells. Quantification of these effects can help answer the question on the origin of DL, which at the moment is still a matter of debate. We determined clonogenic survival and DL emission spectra of Saccharomyces cerevisiae yeast cells following treatment with various doses of the oxidant agent hydrogen peroxide (H2O2), in the presence or absence of the bioflavonoid at different concentrations. We obtained that H2O2 treated cells emit more photons in the red-region of the visible domain. A consistent decrease in DL intensity is observed in quercetin-treated cells, suggesting that free radicals substantially contribute to DL emission in this cell type.
|Titolo:||Effects of bioflavonoid quercetin on delayed luminescence of hydrogen peroxide-treated yeast cells|
|Data di pubblicazione:||2007|
|Citazione:||Effects of bioflavonoid quercetin on delayed luminescence of hydrogen peroxide-treated yeast cells / BARAN I; GANEA C; MUSUMECI F; TUDISCO S; SCORDINO A; PRIVITERA S; LANZANO L; GRASSO R; SUI L; BARAN V. - In: LNS. ACTIVITY REPORT. - ISSN 1827-1561. - 2007(2007), pp. 199-201.|
|Appare nelle tipologie:||1.1 Articolo in rivista|