OBJECTIVEFor anti-inflammation, relieving pain and decreasing acute toxicity, the best condition for extracting procedure of Psammosilene tunicoides was chosen. And the relationships between several solvent extracts and pharmacodynamic index were studied.

METHODUniform design with multi-targets was used in the optimization process, and the evaluate index were the results of anti-inflammation, relieving pain and LD50 were employed as the evaluating indexes. At the same time, the contents of the extracts, water extract, acetic ester extract and ether extract were determined.

RESULTThe best condition is that the medicinal material is optimized with 8 times of water (pH 6-7) and 2 h of each time. The best condition is satisfactory by test verification. And the pharmacodynamic actions of anti-inflammation, relieving pain and LD, were not obviously related to the dry extracts, water extract, acetic ester extract and ether extract.

CONCLUSIONUniform design method with pharmacodynamic index has the merit of being relaated to the function and symptom directly. The extracted twice technology condition optimized is stable, feasible and suitable for industry production. And it is not suitable to take the solvent extracts as quality control index related to the function and symptom.