Research on the Vacuum Freeze-Dryin g Method for the Gel of Aloes
With the simple instrument of resistance,the crystallizing point and the melting point of the gel of alo es were determined before vacuum freeze-drying,then the gel of aloes were freezed and lyophilized accord ing to a fixed procedure of rising temperature,after that a curve of vacuum freeze-drying for gel of aloes was ac hieved.At last the spaying-drying method for gel of aloes was processed,and some items of gel of aloes which used vacuum freeze-drying method and spraying-drying method were determined separately,these items include mineral,albumen,organic acid,appearance,etc..After the co ntrast on these items,a result was achieved:the biological activatio n and characteristics can be keeped w ell with the method of vacuum freeze-dry ing.