Chinese herbal medicine vacuum freeze-drying machine

Chinese herbal medicine vacuum freeze-drying machineIt is to freeze Chinese medicinal materials (fresh or moist) containing a large amount of water into a solid state, and then directly let the ice rise into water vapor without going through the liquid state in a vacuum environment, in order to achieve the purpose of drying. This process is also called "sublimation drying".

Retaining active ingredients: The entire process is carried out at low temperatures (usually -30 ℃~50 ℃), avoiding the damage and decomposition of heat sensitive active ingredients such as volatile oils, glycosides, vitamins, enzymes, alkaloids, etc. in medicinal materials by high temperatures.

Chinese herbal medicine vacuum freeze-drying machineMaintain the original shape, color, and taste: The drying process does not shrink, and the medicinal materials maintain their volume and shape before freeze-drying, with bright colors and minimal loss of aroma substances. For example, freeze-dried ginseng and dendrobium have a plump appearance and rehydration properties.

Eliminate mold and oxidation: Vacuum and low temperature environments inhibit microbial growth and enzyme activity, reduce oxidation reactions, and extend shelf life.

Easy to store and transport: The moisture content can be reduced (1% -3%), the weight is greatly reduced, and the texture is loose after drying, making it easy to crush.

Environmentally friendly and pollution-free: It belongs to the physical drying method and does not add any chemical preservatives.

Drying chamber (freeze-drying room): a vacuum sealed chamber for storing traditional Chinese medicinal materials, with heating shelves inside to provide the heat required for sublimation.

Refrigeration system: Provides ultra-low temperature for the drying chamber and cold trap, quickly freezes medicinal herbs, and cools the cold trap to capture water vapor.

Vacuum system: including vacuum pumps, etc., used to create and maintain a low-pressure (high vacuum) environment required for sublimation.

Heating system: Provides controllable and gentle heat to promote the sublimation of ice without melting.

Cold trap (water vapor condenser): located between the drying chamber and the vacuum pump, with an extremely low temperature (-40 ° C to -80 ° C), used to capture the water vapor sublimated from medicinal herbs, allowing it to re condense into ice and prevent water vapor from entering the vacuum pump.

Control system: Modern freeze-drying machines are controlled by PLC or computer, which can accurately set and monitor the freeze-drying curve (temperature, pressure, time).