Compared with normal sun drying, boiling drying, spray drying and vacuum drying, Vacuum lyophilization equipment has the following outstanding advantages:
a. Vacuum lyophilization equipment is done at low temperature, so it does not denature the protein.
b. Due to the low temperature drying, the loss of volatile components, heat-denatured nutrients and aromatic components in the substance is very small, so vacuum lyophilization equipment is a technology to process high quality of chemicals, drugs and food.
c. During the low temperature drying process, the growth of microorganisms and the role of enzymes can hardly proceed, so that the original properties of the substance can be best maintained.
d. The volume and shape are basically unchanged after vacuum lyophilization equipment. The material is like sponge. When rehydrated, the contact surface with water is large, and it can quickly return to its original shape.
e. Because it is generally dried under vacuum, there is very little oxygen, which protects easily oxidized substances.
f. It can remove 95% ~ 99.5% of the moisture in the products, and the shelf life of freeze dried products is long.
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