A freeze-dryer or a lyophilizer is a machine designed for canning products by freeze-drying in vacuum.
This method combines two well-known preservation methods – freezing and drying in a vacuum. During freezing, there are practically no changes in the properties of the product, and when drying in vacuum, the structure, composition and nutritional properties of the product are preserved to a much greater extent than when preserved by other methods. The process takes place without the use of any preservatives or additives, it is absolutely harmless both to the environment and to the products that are exposed to it.
Dehydrated products in vacuum (freeze-dried) retain:
- appearance and shape
- cell structure
- taste and aromatic properties
- nutritional value