Determination of astragalin,kaemperfol-3-O-rutinoside,quercetin,kaempferol,and isorhamnetin in Lysimachia christinae by HPLC
Objective To develop an HPLC method for determination of astragalin,kaemperfol-3-O-rutinoside,quercetin,kaempferol,and isorhamnetin in Lysimachia christinae.Methods The analysis was performed on Eclipse XDB-C18 column(150 mm×4.6 mm,3.5 μm).The mobile phase consisted of methanol and 0.4% phosphoric acid with gradient elution.The detection wavelength was 360 nm,flow rate was 0.5 mL/min,column temperature was 30℃,and volume of injection was 10 μL.Results Aastragalin,kaemperfol-3-O-rutinoside,quercetin,kaempferol,and isorhamnetin showed good linear relationships of 22.10—176.80,21.14—169.12,17.40—174.00,51.12—408.96,and 23.30—186.40 μg/mL(R2≥0.999 1),whose average recoveries were 99.50% ,100.39% ,99.93% ,105.58% ,and 98.96% with RSD values of 1.07% ,1.44% ,0.57% ,0.24% ,and 0.65% (n=6),respectively.Conclusion The method is reproducible,simple,and accurate,which can be used for the quality control of Lysimachia christinae and its preparations.