Pakastekuivausmenetelmä
Pakastekuivausmenetelmä, known in English as freeze-drying or lyophilization, is a dehydration process typically used for preserving perishable materials or making them more convenient for transport. The process involves freezing the material and then reducing the surrounding pressure to allow the frozen water in the material to sublimate directly from the solid phase to the gas phase.
This method is beneficial as it preserves the structure, nutritional value, and flavor of the original substance.
The freeze-drying process consists of three main stages: freezing, primary drying (sublimation), and secondary drying (desorption).
Pakastekuivausmenetelmä is widely used in various industries, including food processing, pharmaceuticals, biotechnology, and conservation. In food,