YU Shu-yi1, LIU Ying2, LIU Shu-min2. Simultaneous Determination the Contents of Protodioscin,Methylprotodioscin,Pseudoprotodiosc in Rhizoma Dioscoreae Nipponicae with RP-HPLC[J]. Chinese journal of experimental traditional medical formulae, 2012, 18(9): 96-98.
YU Shu-yi1, LIU Ying2, LIU Shu-min2. Simultaneous Determination the Contents of Protodioscin,Methylprotodioscin,Pseudoprotodiosc in Rhizoma Dioscoreae Nipponicae with RP-HPLC[J]. Chinese journal of experimental traditional medical formulae, 2012, 18(9): 96-98. DOI: 10.13422/j.cnki.syfjx.2012.09.076.
Objective:Establish a method for determining the content of water soluble saponins of Rhizoma Dioscoreae Nipponicae which grow in Daxinganling area of Heilongjiang Province.Method:RP HPLC was used on an Diamonsil C18 column(4.6 mm×250 mm
5 μm) with acetomitrile-water as mobile phase by gradient elution for the separation and determination of saponins of Rhizoma Dioscoreae Nipponicae
the detection wavelength was at 203 nm
column temperature 30 ℃.Result:The linear ranges were 50-500 mg·L-1 for protodioscin concentration
35-350 mg·L-1 for methyl protodioscin concentration
15-150 mg·L-1 for pseudoprotodioscin concentration
the calibration curve of each solvent had good linear relationship within the range with a correlation coefficient of 0.999 9(n=6).On the basis of methodology of the test results show RSD <3%.Conclusion:All the results show that the method has good reproducibility
recovery rate and stability.This has provided a basis for Rhizoma Dioscoreae Nipponicae quality control.