ZHAO Bo, ZHANG Hui, CHEN Ying, et al. Determination Related Substances and Content in of Ammonium Glycyrrhizinate by HPLC[J]. Chinese journal of experimental traditional medical formulae, 2014, 20(7): 73-77.
ZHAO Bo, ZHANG Hui, CHEN Ying, et al. Determination Related Substances and Content in of Ammonium Glycyrrhizinate by HPLC[J]. Chinese journal of experimental traditional medical formulae, 2014, 20(7): 73-77. DOI: 10.13422/j.cnki.syfix.2014070073.
Objective: To establish a method to determine related substances and content in Glycyrrhizia uralensis of ammonium glycyrrhizinate. Method: HPLC was adopted for the determination. The separation was performed on Ecosil-C18 column(4.6 mm×250 mm
5 μm)
column temperature at 30 ℃ with mobile phase consisted of phosphate buffer solution(pH=7.0)-acetonitrile(80:20). The flow rate was set at 1.0 mL·min-1 with its detection at 250 nm. Result: Related substances and degraded substances were completely separated from ammonium glycyrrhizinate
the least detective range was 1.52 ng
the least quantification range of 4.23 ng. The content was a good linear relationship within the range of 0.025 6-0.409 9 g·L-1(r=0.999 9).The precision in a day is good (RSD 0.60%). The average recovery was 99.51%(n=9). Conclusion: The method is simple
accurate
specific and sensitiveness for the determination of ammonium glycyrrhizinate related substances and its content.