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Ixeris is a genus of Asian flowering plants in the dandelion family. Concepts of which species should be included in the genus have changed in recent years because of the use of molecular investigations. Numerous species formerly regarded as members of Ixeris have been moved to other genera; (Agoseris, Crepidiastrum, Ixeridium, Lactuca, Paraixeris, Paraprenanthes, Sonchella or Youngia). Species remaining in Ixeris or of uncertain affiliations are listed below.
Kudouzi polysaccharide, and preparation method and application thereof
The application discloses Ixeris sonchifolia Hance polysaccharides, a preparation method and application thereof, belongs to the technical field of plant polysaccharides, and provides polysaccharides ISP-1a and ISP-2a, wherein the ISP-1a has a molecular weight of 2086 Da and is composed of seven monosaccharides of mannose, rhamnose, glucuronic acid, glucose, galactose, xylose and arabinose; the ISP-2a has a molecular weight of 1781 Da and is composed of five monosaccharides of mannose, rhamnose, galacturonic acid, xylose and arabinose. The whole grass of Ixeris sonchifolia Hance is subjected to hot water extraction after ethanol degreasing, neutral enzyme + Sevage method is used to remove protein, macroporous resin is used for decolorization, column chromatography elution is carried out, purification is carried out, and two kinds of uniform polysaccharides are obtained after freeze-drying. The polysaccharides ISP-1a and ISP-2a have good antioxidant and lipid-lowering effects, and can be applied to the preparation of food, health products or medicines with antioxidant and lipid-lowering functions.
Owner:SHENYANG PHARMA UNIV