Objective: To optimize traditional decoction process of Dachengqi decoctiom. Method: Traditional decocting apparatus of casserole was used to decoct

with extract rate

the content of combined anthraquinone

naringin

hesperidin

neohesperidin

honokiol and magnolol as indexes to comprehensive score

L9(34) orthogonal test was used to optimize traditional decoction technology of Dachengqi decoction with the amount of water

soaking time

decoction time and later added time of Rheum palmatum as factors. Result: Optimum decoctiom technology was:adding 8 times the amount of water in Dachengqi decoction

soaking 30 minutes

decocting 25 minutes after boiling

later added time of R. palmatum 10 minutes. Conclusion: Traditional decoction method was taken to establish decoction process standard of Dachengqi decoction in this study

and in order to provide a reference to improve quality of Dachengqi decoction.