Acetylated longan pulp polysaccharide and application of acetylated longan pulp polysaccharide to medicine preparing

The invention relates to acetylated longan pulp polysaccharide. A synthesis method of the acetylated longan pulp polysaccharide includes the steps that longan pulp polysaccharide is dissolved into ultrapure water, a sodium hydroxide solution and acetic anhydride are alternately added, the mixture is stirred and reacted, a reaction solution is subjected to dialysis concentration, alcohol precipitation and freeze drying, and the acetylated longan pulp polysaccharide is obtained. The invention further relates to an application of the acetylated longan pulp polysaccharide to medicine preparing, in particular to an application to preparing of antioxidant or immune adjustment medicine preparations. The application includes the application to preparing of a free radical scavenging medicine preparation, the application to preparing of a lipid peroxidation inhibiting medicine preparation, the application to preparing of an erythrocyte hemolysis inhibiting medicine preparation, the application to preparing of a T-cell