Vacuum freeze-dried pharmaceutical industry applications
Such as : Bioengineering, Bioproduct( vaccine ,blood products, modernization
of Chinese traditional medicine antibiotics, veterinary drugs , health care foodand so on.
Vacuum freeze-dried freeze-dried product features excellent characteristics are summarized as follows:
Dry the products under the freezed state in order to keep the shape of the products after the lyophilizing .
The first step of lyophilization is to freeze the product to keep its’ original shape ,then remove the water like pumping the smoke out , so the original state(shape, inner ingredient, construction ) can be kept after lyophilizing.
Evaporation drying is to boil the products to dry , so the phenomenon of shrinkage, foam rising and the solvent moving to the surface form the membrane (surface hardening) would be there.， Not only the figure but also the inner structure can not keep the initial shape.
The good performance of restorability:
Lyophilization can form the excellent porous substance, after the ice sublimation , there would be numerous fine apertures which reach to the core of the substance ,which is just like the cotton. After dissolving, thelyophilized substance can restitute quickly and perfectly.As for the normal drying, the proper restitution cannot be achieved after the dissolving which is a huge difference.