On the bases of research papers investigation, the advances in isolation,
purification, bioactive function, structure determination, structure-activity relationship
of polysaccharides, and the polysaccharide research situation and prospect in our
country were reviewed. Then, four polysaccharides were isolated and purified from
four root foodstuff of Rhizoma Diosoreae (RDPS-I), lily bulb(LBPS-I), sweet
potato(SPPS-...