HPLC chromatogram of Jiubiying extracts and fractions I, II, III, IV, and V. Conditions: column: Shiseido UG120-C18 reversed-phase column (4.6 mm×150 mm, 5 μm); mobile phase: acetonitrile (A) -water (B) for gradient elution, and the elution system was: 0–10 min, 10% of B; 10–20 min, 10%–40% of B; 20–30 min, 40% of B; flow rate: 1.0 mL/min; detection wavelength: 210 nm; column temperature: 30oC.