Objective: To optimize extraction technology conditions of Dieda Kangfu tinctures. Method: With weight of extract and the content of safflower yellow A as indexes

effects of ethanol concentration

extraction time and extraction times on extraction technology were investigated by orthogonal test. Result: According to weight of extract

the concentration of ethanol had very significant effect

extraction times had significant effect;According to the content of safflower yellow A

only the concentration of ethanol had significant effect.Optimum extraction technology was as following:impregnated 3 times with 75% ethanol

30 days each time. Conclusion: This optimized extraction technology was not only benefiting for extraction of effective components in transition of powders to tinctures

but also simple and reasonable for industrial production in small and medium-sized hospitals.