Carboxymethyl longan pulp polysaccharide and pharmaceutical application thereof

The invention relates to a carboxymethyl longan pulp polysaccharide. The carboxymethyl longan pulp polysaccharide is obtained by adding chloroacetic acid into a sodium hydroxide solution to react. The invention further relates to pharmaceutical application of the carboxymethyl longan pulp polysaccharide, in particular to application of the carboxymethyl longan pulp polysaccharide in preparation of anti-oxidation or immunological regulation medicaments. The application includes application of the carboxymethyl longan pulp polysaccharide in the preparation of free radial removing medicaments, lipid peroxidation restraining medicaments, red blood cell hemolysis restraining medicaments, T cell immune level raising medicaments, organism humoral immunity level raising medicaments and non-specific immunity enhancing medicaments. A synthetic carboxymethyl longan pulp polysaccharide is applied to in-vitro anti-oxidation and in-vivo immunological competence activity experiments of Kunming mice to obtain an experiment r