In the freeze-drying and storage processes of food, drugs, and organisms, many factors (such as chemical composition, freezing rate, freezing and dehydration stress, glass transition temperature, residual moisture in dried solids, temperature and humidity of the storage environment, etc.) can affect

The freeze-drying of a freeze-drying machine is a technique that uses the principle of sublimation for drying. It is the process of quickly freezing the dried substance at low temperature, and then directly sublimating the frozen water molecules into water vapor under an appropriate vacuum environme