Study on the Quality Control of Yinpian of Isatis Root / 国际中医中药杂志

ABSTRACT

Objective To study the quality control of yinpian of Isatis Root.Methods Optical microscope was used to identify the microscopic features,TLC was adopted to identify the arginine in Isatis Root,and HPIC-ELSD was used to detect the quality of arginine.Results and Conclusion There is no difference between yinpian and crude powder of Isatis Root.Arginine can be detected bv TLC.The moisture contents.the total ash contents and the acid-insoluble ash contents in the yinpian should be less than 9.0%,10.0%,and 2.0% respectively;while the alcohol-soluble extractive contents and the contents of arginine in Isatis Root should be more than 25.0% and 2.01% respectively.