wholesale home use 4kg 6kg 10kg fruit vegetable freeze dryer machine

Product Description

Freeze drying principle
A drying technique that freezes wet materials or solutions into a solid state at lower temperatures (-10 ° C~-50 ° C or even lower), and then sublimates the water in the liquid state directly into a gas state under vacuum (1.3~13 Pa), ultimately dehydrating the material. The principle of vacuum freeze-drying is based on the three-phase equilibrium diagram of water. Firstly, the temperature of the sample is reduced to below atmospheric pressure to completely solidify the water in the sample into ice crystals. Then, the freeze-drying machine starts to evacuate and reduce the pressure. The solid ice crystals can directly sublime into gaseous water vapor, releasing the water in the sample and ultimately achieving the purpose of drying. Due to the low temperature of the sample and its water during the drying process, it can effectively slow down the rate of chemical reactions, reduce the thermal motion of molecules, and thus reduce collisions and interactions between molecules, which is beneficial for maintaining the integrity of the internal molecular structure and properties of the sample.

Technical Parameters

Main Features

*Protects many heat sensitive substances in the materials.
*When drying at low temperature, the loss of some volatile components in the materials is very small.
*In the freeze-drying process, the growth of microorganisms and the role of enzymes can not be carried out.
*The volume is almost unchanged and the original structure is maintained.
*The surface hardening of the material will not be caused because the moisture in the material exists in the form
of ice crystal after freeze drying.
*The materials is loose, porous and spongy after freezing dried, so can dissolve quickly and completely, and almost
immediately returns to its original shape.
*Since drying is carried out under vacuum, there is little oxygen, so some easily oxidized substances are protected.

*Freeze drying can remove more than 95% ~ 99% of moisture, so that the dried products can be preserved for a long
time without deterioration.
*Because the material is in the freezing state and the temperature is very low, so the requirement of heat source is
not high.

Freeze dried samples

fruit vegetable freeze dryer machine  have broad application prospects in multiple fields due to their high efficiency, energy saving, convenience, and multifunctionality. Whether it is daily food preservation, homemade healthy snacks, pet food production, preservation and extraction of traditional Chinese medicine and health products, handicrafts and DIY creation, infant and toddler food production, or emergency food reserves, household freeze-drying machines can bring convenience and a healthy lifestyle to families.

Packaging & Shipping