Exploratory Reaserch on the Quality Control of Stachyuri Medulla Helwingiae Medulla

OBJECTIVE To investigate new control methods and offer some suggestions according to the current quality standards and the exploratory reaserches on Stachyuri Medulla Helwingiae Medulla. METHODS On the basis of current quality standards, the exploratory reaserches were performed including TLC, determination of toal ashes and determination of As, Hg. RESULTS The TLC results were consistent with the current quality standard results in Chinese Pharmacopoeia 2015 Edition; the toal ashes content(13.92%-28.42%) was significantly higher than that of certified products(1.72%-2.98%); the determination methods for As and Hg were established by AFS. The detection limit of As and Hg were 0.015 5 ng·mL^-1 and 0.009 4 ng·mL^-1, and their recoveries (n=9) were 102.3% and 103.7%. CONCLUCION TLC is applied to authenticity of the identification, and it can be used as a supplement of current quality standards. Determination of toal ashes can indentify the adulteration obviously; the determination methods for As and Hg can provide references for the security assurance of Stachyuri Medulla Helwingiae Medulla.