Abstract: | Polysaccharides are combined by the monosaccharide. The investigation shows that the polysaccharides have the extensive function on immunity regulate, restraining tumor, and lowing the blood sugar. Therefore, their application has wide prospect.In addition, because there are many difficulties and distinctions of polysaccharides on the quality standards, structural characterization and so on, they need for further research.This article summarizes research developments on their extraction, separation, identification, structural analysis and biological activities. |