Fresh folium microctis freeze-drying preparation process
A preparation process, the technology of cloth dregs leaves, which is applied in the field of preparation technology of fresh Chinese herbal medicines cloth dregs leaves for vacuum freeze-drying preservation, can solve the problems of easy loss and damage of active ingredients, and high water content of cloth dregs leaves, etc.
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[0015] 1. Vacuum freeze-drying of cloth dregs leaves is carried out by vacuum freeze dryer.
[0016] Select fresh cloth dregs leaf raw materials, remove impurities such as branches, inferior quality and dead leaves, and rinse quickly; pre-dry the cloth dregs leaves to a water content of 70%; put the pre-dried cloth dregs leaves on a plate, and the weight of the plate is 3.1 kg / m2, thickness 2.5cm, pre-freeze at -18℃~-38℃ after gradually cooling down for 3 to 4 hours; then vacuumize until the absolute pressure of the system is 110Pa, enter the heating program, maintain the vacuum degree at 50~60Pa, and raise the temperature of the shed To 60°C, sublimation drying for 16 hours; then keep the temperature of the material at 30°C, make the water content below 1.8%, and then discharge.
[0017] After the above-mentioned process steps, the cloth dregs leaves are ground into powder and passed through a 120-mesh sieve for physical wall breaking. In a sealed and dry state, two supersoni...
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