Study on Optimal Conditions for Extraction of Polygala fallax Hemsl by Orthogonal Test / 国际中医中药杂志

Objective To explore the optimal conditions for extraction of Polygala fallax Hemsl. Methods Various trials were conducted to extract P. Fallax Hemsl. With L_(16) (4~5) orthogonal experiments. Results The optimal experimental parameters for extraction were 95% ethenol, dosage-liquor ration at 1:5, three-times extraction at 75℃, 1.5 hours for each extraction, and extraction rate at 11.89%. Conclusion Orthogonal test is convenient and accurate in extracting P. Fallax Hemsl.

Selection on the optimal extraction of Weining-Dispersible Tablet by central composite design-response surface methodology / 中成药

AIM: To optimize the extraction of Weining-Dispersible Tablet(Radix et Rhizoma notoginseng,Radix et Rhizoma ginseng) with the help of central composite design-response surface methodology. METHODS: The main influencing factors of extraction effect included the quantity of ethanol,the concentration of ethanol and extraction time and the extraction conditions were evaluated by the extract yield and the contents of total notoginseng saponins.The optimal extraction of Weining-Dispersible Tablet was selected by central composite design-response surface methodology. RESULTS: The optimal conditions consisted of extraction two times,2 h each time with ten fold of 70% ethanol. CONCLUSION: It is simple,convenient and high predictive to optimize the extraction craft of Weining-Dispersible Tablet by central composite design-response surface methodology.