Fruit and vegetable freeze-drying machine

The freeze-drying method of fruit and vegetable freeze-drying machine is basically carried out below 0 ℃, that is, in the frozen state of the product. Only when the residual moisture content of the product is reduced in the later stage, the product is allowed to rise to a temperature above 0 ℃, but generally not exceeding 40 ℃.

　　Fruit and vegetable freeze-drying machine

There are various drying methods, such as sun drying, boiling drying, drying, spray drying and vacuum drying, but common drying methods are usually carried out at temperatures above 0 ℃ or higher. The products obtained from drying generally have problems of volume reduction and texture hardening. Most of the volatile components are lost, and some heat sensitive substances undergo denaturation and deactivation. Some substances even undergo oxidation. Therefore, there is a significant difference in the characteristics of the dried product compared to before drying.

The freeze-drying method is basically carried out below 0 ℃, that is, in the frozen state of the product. Only when the residual moisture content of the product is reduced in the later stage, can the product be raised to a temperature above 0 ℃, but generally not exceeding 40 ℃. Under vacuum conditions, when water vapor sublimates directly, the drug remains in the frozen ice shelf, forming a sponge like porous structure. Therefore, its volume size remains almost unchanged after drying. Before reuse, simply add injection water and it will dissolve immediately.

　　Fruit and vegetable freeze-drying machine

The Kassel food vacuum freeze-drying machine has the characteristic of maintaining the original active ingredients and nutritional components of the material unchanged, and the physical, chemical, and biological states remain basically unchanged. After drying, the product not only maintains its color, aroma, taste, and shape, but also retains its original flavor and active ingredients after several years of storage. The machine has the advantages of good freeze-drying effect, fast drying speed, complete adjustment mechanism, stable operation, easy operation, intuitive display, reliable use, convenient maintenance, and more energy-saving than similar products. Kassel provides high-quality, affordable, and energy-saving vacuum freeze-drying equipment for food processing enterprises.