Is it better to freeze-dry Panax notoginseng or to dry it naturally?

It should be freeze-dried notoginseng. All right. Freeze-drying Panax notoginseng refers to drying fresh and clean Panax notoginseng by vacuum freeze-drying process. As fresh Panax notoginseng enters the vacuum tank in a completely frozen state, frozen water (small ice crystals) directly sublimates into steam and leaves Panax notoginseng to obtain freeze-dried Panax notoginseng. The wall of Panax Notoginseng dried by this process is broken due to the freezing expansion of water and sublimation of ice crystals, and the effective components (especially volatile and active components) of Panax Notoginseng remain intact at low temperature, so the water content of freeze-dried Panax Notoginseng can be very low and it is not easy to mildew.