title: [Structural features of two neutral polysaccharides Md-1, Md-2 from Ophiopogon japonocus].
abstract: OBJECTIVE
  To study the chemical feature of Md-1, Md-2 polysaccharides which extracted from Ophiopogon japonocus.
  
  
  METHODS
  Two constituents were isolated and purified by gel-filtration chromatography. Physicochemical constants and spectral analysis further were used to study their structural features.
  
  
  RESULTS
  The mean molecular weights were estimated to be 27064 and 48651. Structures were composed of D-glucose.
  
  
  CONCLUSIONS
  Md-1 and Md-2 polysaccharides are glucosans, which only are composed of D-glucose units joined by alpha-(1-->4) glucosidic linkages.
authors.affiliation: China Agricultural University, Beijing 100094.
authors.forename: Geimei
authors.initials: G
authors.lastname: She
authors.forename: Jieping
authors.initials: J
authors.lastname: Shi
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D005947:Glucose / Q000032:analysis; D008970:Molecular Weight; D031441:Ophiopogon / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D011134:Polysaccharides / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D004365:Drugs, Chinese Herbal; D011134:Polysaccharides; D005947:Glucose