Extraction and Drying Technique of Bawei Shangke Huoxue Tablets

[Objectives]To optimize the water extraction process of Bawei Shangke Huoxue tablets and determine the best drying method of the extract.[Methods]The orthogonal test method was used to select the optimal water extraction process,with the content of total flavonoids and the yield of dry extract as the test indicators,and the soaking time,the amount of water added,the extraction time and the extraction times as the main test factors.The water content of spray powder was taken as the evaluation indicator,the inlet air temperature,the density of liquid phase and the outlet air temperature were selected as the factors,and the spray drying process of water-extracted concentrated liquid was optimized by orthogonal test.[Results]The optimal water extraction process was no immersion,water decoction and extraction twice,adding 10 times of water each time,extraction for 1h,in which the amount of water added was the main factor.The liquid density of spray dried extract powder is 1.05-1.08(60℃),the inlet air temperature is 180℃,the outlet air temperature is 80℃is the most suitable,and the liquid density is the main factor.[Conclusions]The extraction and drying technology of Bawei Huangke Huoxue tablet is feasible,scientific and reasonable,and can be used for industrial production.