Research Article

Benzophenone Suppression of Quercetin Antioxidant Activity towards Lipids under UV-B Irradiation Regime: Detection by HPLC Chromatography

Figure 4

Formation of lipid peroxides in the UV-B-irradiated sample, that is, quercetin/BZP/phospholipids mixture in methanol. (a) The recorded samples chromatograms recorded at 234 nm (peroxides retention times, , of 5.5 and 6.5 min). ((b) and (c)) changes in the two peroxides absorption spectra taken from the upper (a) chromatogram (Per1  min, Per2  min), as a result of the increasing UV-B irradiation periods . ((d) and (e)) Kinetics of rise of the two peroxides peaks (Per1  min, Per2  min) integrated areas as a result of the increased UV-B irradiation periods, ln . The corresponding rate constants and the related error bars are shown in the plots.