Abstract

In the fact that Stage 1 freeze humidity materials of processing Freeze – Drying will be the most effect, when temperature of materials comes up to the optimal temperature of freeze, at that time free water of materials will be completely crystallized, therefore when finshed on stage 2 of processing Freeze – Drying free humidity of materials be crystallized to completely sublimated. Like this, how to determine free water of materials completely crystallized and optimal temperature of freeze in stage 1 of processing Freeze – Drying. For this reason, We researched the method to determine the ice ratio and optimal temperature in stage 1 freeze of processing freeze - Drying.