Studies On The Physical And Chemic Characteristics Of Silk Protein And Fibroin Microcapsule Preparation

In this dissertation, methods of degradation and desalination of silk fibroin were researched. The results showed that self-made equipments not only can increase efficiency of fibroin power producing and reclaiming, but also have the effect of discoloring. There is no obvious difference in amino acid content between fibroin power and rude fibroin. The grains achieved by spray drying are smaller than those achieved by freeze drying. So the method of using self-made equipments together with spray drying are simple and feasible.Fibroin protein solution, decomposed from degummed silk by calcium chloride, has finer emulsification ability and stability. Its these ability are not be obviously effected by pH value which is between 3 and 10.With fibroin solution concentration increasing, its emulsification ability , spume ability and stability are also increased. Solution system color is ivory-white like milk.Fibroin solution has perfect emulsification and stability, it also has the same important characteristic to the colloid. So it can be used to prepare for microcapsule. Fibroin microcapsules'wall have different structure characteristic with different fibroin solution. But these characteristics also effect on microcapsules release ability.