METHOD Sphingomyelin was prepared through the process of separating erythrocyte from blood,erythrocytolysis,dehydration,dry,et al,and then hydrolyzed to ceramide by phospholipase C.
Energy-saving ethanol dehydration techniques to produce dehydrated alcohol mainly included four measures as azeotropy distillation, extraction distillation, absorptive process and membrane separation.
A new method of processing candied jujube,except washing process and detaching nucleus process the three step are vacuum critical cryodrying,vacuum infusing sugar and vacuum dehydration in sequence.