Abstract With the increasing development and utilization of marine biological resources, the development of marine algae resources has also been developed to a certain extent, with abundant seaweed resources, which is the most important part of marine biological resources. The molecular structures of different alginpolysaccharides is significantly different, and the alteration of polysaccharide structure may have a decisive effect on their biological activity. Therefore, it is necessary to extract seaweed polysaccharide, study its derivatives deeply, select different derivative methods, and compare the structure and activity differences between different polysaccharides for marine drug screening. The text systematically summarizes the derivation of polysaccharides and various extraction methods of polysaccharides.
Keywords Algal Accharides; Derivation; Extraction of Polysaccharides.