Lyophilization technique is one of the ideal methods of making preserving various kinds of biological products.
The solid-state water in the biologics is changed directed into vapour under the high vacuum freezing condition therefore the materials can be dryer through dehydration. The materials can be preserved of years with the original chemicophysics and chemicobiology characteristics basically unchanged after dehydration, thus easily of their revive now this method is widely used in many fields such as medicine. Pharmacy, biochemistry, and industries.
