Figure 1.

The chromatograms of phenolic compounds from EAA and EAF based on HPLC analysis. Peak identification: 1: homogentisic acid, 2: gallic acid, 3: protocatechuic acid, 4: chlorogenic acid, 5: (+)-catechin, 6: caffeic acid, 7: phloretic acid, 8: p-coumaric acid, 9: ferulic acid, 10: veratric acid, 11: salicylic acid, 12: naringin, 13: hesperidin, 14: quercetin, 15: cinnamic acid, 16: naringenin, 17: kaempferol, and 18: hesperidin. Chromatogram of (a) standard solution used for phenolic compound analysis (100 μg/mL each), (b) EAA (10 mg/mL), and (c) EAF (10 mg/mL). EAA: Erigeron annuus aerial parts; EAF: E. annuus flowers.