LI Yan-fang1, XIA Quan2, XU Feng-qing1, et al. Determination of Gallic Acid and Quercetin in Relinqing Preparations by HPLC[J]. Chinese journal of experimental traditional medical formulae, 2008, 14(12): 15-17.
LI Yan-fang1, XIA Quan2, XU Feng-qing1, et al. Determination of Gallic Acid and Quercetin in Relinqing Preparations by HPLC[J]. Chinese journal of experimental traditional medical formulae, 2008, 14(12): 15-17.DOI:
Objective:To develop an HPLC method for the determination of gallic acid and quercetin in Relinqing preparations.Method: A Kromosil C18 column(4.6 mm×250 mm
5 μm)was used
and the mobile phases were acetonitrile and 0.2% phosphoric acid solution with the gradient elution. The flow rate was 1 mL·min-1 and the detection wavelength was 254 nm.Results:The linear ranges of gallic acid and quercetin were 0.204~1.22 μg(r=0.999 7)
0.058~0.35 μg(r=0.999 5) respectively.The average recoveries were 98.5%(RSD=1.4%)
97.8%(RSD=1.6%) respectively.Conclusion:The method can be used to control the quality of Relinqing preparations.It is simple
accurate
reproducible and suitable for simultaneous determination of two active constituents in Relinqing preparations.