Freeze dryer, also known as vacuum freeze dryer machine, is a drying technology of sublimation to dehydrate materials.
Why vacuum freeze dryer is worth recommendation for novel fruits snacks now?
- Because it is sublimation dehydrate, the nutrients are almost undestroyed, especially heat sensitive substances.
- Because it sublimates water directly from the solid state into vapors, the food structure does not change.
- Under vacuum drying, the possibility of oxidation and enzymatic change is small, so the original color is easy to maintain.
- Because the aroma ingredients in the food are concentrated during the freeze drying, the flavor is enhanced.
- Following the water sublimation during freeze drying , a large amount of pores are formed, the rehydration is excellent , up to 95%.
- Due to the high dehydration rate, no preservative is needed, the shelf life can be more than five years.