Polysaccharide has many biological functions, such as anti-tumor, anti-virus and so on. The function of polysaccharide is closely related to its structure. The structure of polysaccharides can be classified into primary structure and advanced structure. There are many methods for the analysis of polysaccharide structure, which are mainly divided into chemical analysis method, instrumental analysis method, biological method, two-dimensional NMR spectrum and atomic force microscope method. The research progress on the relationship between the structure, structure and function of polysaccharide is reviewed.
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