[Simultaneous determination of eight active components in Chrysanthemum indicum by HPLC]

This study is aimed to establish a high-performance liquid chromatography (HPLC) method for simultaneous determination of chlorogenic acid, caffeic acid, 1,3-dicaffeoylquinic acid, 3,5-dicaffeoylquinic acid, luteolin-7-O-beta-D-glucoside, 3,4-dicaffeoylquinic acid, linarin and luteolin in Chrysanthemum indicum. The separation was carried out on a Shim pack VP-ODS (4.6 mm x 250 mm, 5 microm) column eluting with mobile phases of methanol (A) and water containing 0.3% phosphoric acid (B) in gradient mode (0-9 min, 85% -80% B; 9-12 min, 80% -70% B; 12-15 min, 70% -65% B; 15-20 min, 65% -60% B; 20-23 min, 60% -55% B; 23-29 min, 55% -54.4% B; 29-32 min, 54.4% -45% B; 32-37 min, 45% -5% B; 37-45 min, 5% -85% B) at the flow rate of 1.0 mL x min(-1). The column temperature was 35 degrees C and the detection wavelength was set at 326 nm. The good separation of chlorogenic acid, caffeic acid, 1,3-dicaffeoylquinic acid, 3,5-dicaffeoylquinic acid, luteolin-7-O-beta-D-glucoside, 3,4-dicaffeoylquinic acid, linarin and luteolin was achieved within 40 min. Calibration curves of the eight effective components showed good linear relationship (r > 0.999 5, n = 7). The average recoveries were within 97.03%-102.3% (RSD < 2.0%, n = 6). The method is simple, accurate and repeatable and can be used for the quality control of Ch. indicum.