Determination of Anticancer Activity Components of Flavonoids from Hedyotis diffusa by HPLC / 中国药房

ABSTRACT

OBJECTIVE:To establish the method for the simultaneous determination of anticancer activity components of flavonoids from Hedyotis diffusa,i.e. quercetin,kaempferol. METHODS:HPLC was applied to determine the contents and performed on Alltima C18(250 mm?4.6 mm,5 ?m) column. Mobile phase consisted of methanol(A)-0.5% glacial acetic acid,(gradient elution). The detection wavelength was aet at 350 nm. RESULTS:The linear range of quercetin was 0.006 2～0.244 0 ?g(r=0.999 8)and that of kaempferol 0.007 8～0.310 6 ?g(r=0.999 9). The average recovery of quercetin was 101.84%(RSD=1.79%,n=6) and that of kaempferol 99.04%(RSD=2.90%,n=6). CONCLUSIONS:The method is simple,accurate and reproducible for the quality control of H. diffusa.