Vegetable Fruit Meat Vacuum Freeze Dryer Introduction:
Freeze-drying, also known as freeze-drying or freeze-drying, is a dehydration process commonly used to preserve perishable materials or make them easier to transport. The principle of freeze-drying is to freeze the material and then reduce the surrounding pressure, so that the frozen water in the material can be sublimated directly from solid phase to gas phase.
In the freeze-drying process, the material is frozen first, and then the product is loaded into a vacuum drying tank, which sublimates the vacuum environment of ice to steam. The condenser in the tank condenses the steam into ice. On the coil surface, the product will be dehydrated.
Vegetable Fruit Meat Vacuum Freeze Dryer Advantages :
1. The freeze-dried products have a long storage time. If the freeze-dried substance is sealed to prevent moisture reabsorption, it can be stored at room temperature without refrigeration and can be protected from decay for many years. Preservation is possible because drastically reduced water content inhibits microorganisms and enzymes that normally destroy or degrade the substance.
2. Convenient transportation. Lightweight, freeze-dried products can be easily transported through ordinary containers or any other means of transportation. Therefore, there is no need for refrigeration facilities, which saves a lot of transportation costs.
3. Higher quality products. Compared with other dehydration methods at higher temperatures, freeze-drying has less damage to substances. Freeze drying usually does not lead to shrinkage or toughening of the dried material. In addition, appearance, flavor, odor and nutrients are usually kept unchanged, making the process widely used to preserve high-quality food.
4. Extremely high rehydration capacity. Freeze-dried products can be rehydrated (reconstructed) more quickly and easily because the process leaves micropores. Pores are produced by sublimated ice crystals, leaving gaps or pores in their positions. This is particularly important when it comes to immediate or convenient food use.