ABSTRACT
Objective:To provide specific suggestions for the reasonable application of various quality sampling inspection methods for Chinese herbal medicines in order to improve the scientificity of sampling inspection plan. Methods:The sampling inspection pro-gram and the overall quality of Chinese herbal medicines in Hubei province from 2014 to 2016 were reviewed and the existing problems were analyzed, finally, suggestions for improvement were proposed for the future work. Results and Conclusion:The current sampling inspection methods have made certain achievements;however, each method still needs optimization. It is suggested that the supervision sampling inspection be standardized to solidify the basis of sampling inspection, special sampling inspection be arranged periodically to target the complicated and recurring quality issues, and evaluation sampling inspection be strengthened for certain varieties to evaluate the overall quality status and discover the risk signals.
ABSTRACT
To establish an optimized determination method for the alkaloids peimine and peiminine in three varieties of Fritillaria. Methods:The samples were refluxed in a mixed solution, the pH value of the mixed solution was adjusted, and then the solution was extracted by ether to obtain the test solution. A Shim-pack VP-ODS column (4. 6 mm × 250 mm,5 μm) was used, the mobile phase consisted of acetonitrile-0. 02% diethylamine(75∶25), and the flow rate was 1. 0 ml·min-1. An Alltech 2000ES ELSD detector was used, the drift tube temperature and the flow rate of nitrogen carrier gas in the ELSD was set at 93℃ and 2. 4 L·min-1 , respectively. The regression equation was calculated between the logarithm values of the reference solution concentration and the corre-sponding peak area. Results:The method could effectively extract the alkaloids from the samples. Peimine and peiminine were well separated by the method, and showed good linearity within the respectively given ranges. The average recovery of the alkaloids in the three varieties of Fritillaria was within the range of 95. 22%-103. 51%. Conclusion: The method is simple,convenient and universal with easy operation,which provides references for the determination of alkaloids in the other varieties of Fritillaria.
