Anti-oxidation polysaccharide in boletus subsplendidus as well as preparation method and application thereof

• Main Authors: WANG YIJUN, ZHANG KEREN, LIU FANG
• Format: Patent
• Language: Chinese; English
• Published: 11.01.2017
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; DERIVATIVES THEREOF; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; POLYSACCHARIDES; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention discloses an anti-oxidation polysaccharide in boletus subsplendidus as well as a preparation method and application thereof. The anti-oxidation polysaccharide is extracted from boletus subsplendidus and is named HNG2. The anti-oxidation polysaccharide is obtained by grinding boletus subsplendidus sporocarp into powder and then carrying out hot water extraction, ethanol precipitation, protein removal, dialysis, freeze-drying, ion exchange and molecular sieving. The HNG2 is yellowish powder, is a polysaccharide containing alpha- and beta-glycosidic bond configurations simultaneously, has a molecular weight of 177KDa, is easily soluble in hot water, and is insoluble in organic solvents, such as ethanol, ethyl ether and acetone. The anti-oxidation polysaccharide is composed of fucose, xylose, glucose, galactose and mannitose in a ratio of 0.36:0.8:30:2:1.6. The polysaccharide has a relatively strong effect on eliminating DPPH, superoxide anion and hydroxyl radical. The anti-oxidation polysaccharide