Fig. 3. Antioxidant activity of flavonoids from C. paliurus leaves assessed by the DPPH radical-scavenging assay. Data represent means ± SD of three independent experiments.
Fig. 4. Typical LC–MS chromatograms of flavonoids from C. paliurus leaves obtained by MAE. Peak A, quercetin-3-O-b-D-glucuronide; Peak B, kaempferol-3-O-b-Dglucuronide; Peak C, kaempferol-7-O-a-L-rhamnoside, Peak D, quercetin; and Peak E, kaempferol.
results obtained, we can conclude that the flavonoids from C. paliurus leaves may be potentially used as a health-promoting agent with antioxidant activity in human diets, as well as providing valuable natural antioxidants in functional foods or medicine.