WANG Shuang1, ZHANG Li-yan2, XIE Yu3, et al. Determ Ina Tion of Gallic Acid in Polygonum Capita Tum and Relinqing Granules by HPLC[J]. Chinese journal of experimental traditional medical formulae, 2012, 18(9): 112-115.
WANG Shuang1, ZHANG Li-yan2, XIE Yu3, et al. Determ Ina Tion of Gallic Acid in Polygonum Capita Tum and Relinqing Granules by HPLC[J]. Chinese journal of experimental traditional medical formulae, 2012, 18(9): 112-115. DOI: 10.13422/j.cnki.syfjx.2012.09.080.
Objective: To establish an HPLC method for determination of the contents of gallic acid in Polygonum capitatum and Relinqing granules.Method: The reserved HPLC method was achieved.Diamonsil C18 colunm(4.6 mm×250 mm
5 μm) with MeOH-H2O-DMF-HAc(1∶ 95∶ 3∶ 1) as amobile phase at flow rate of 1.0 mL·min-1and detection wavelength was at 272 nm and the column temperature was at 25 ℃.Result: The calibration curve was linear in the range of 0.139 6-1.396 0 μg(r=0.999 97).The average recovery rate of gallic acid in P.capitatum was 99.35%(RSD 2.61%)
and was 99.35%(RSD 0.73%) in Relinqing granules.Conclusion: The method is reliable
specific and with good repeatability.It can be used for the quality control of P.capitatum and Relinqing granules and provide a science bases for the planting of polygonum cap itatum.