title: [Studies on the polysaccharide SGPS2 from the fruits of Siraitia grosvenorii].
abstract: OBJECTIVE
  To study the structure of the polysaccharides constituents in the fruits of Siraitia grosvenorii (Swingle) C. Jeffrey.
  
  
  METHODS
  SGPS2 was purified by DEAE-cellulose and Sephadex G-200 column chromatography, the component and structure of SGPS2 were analyzed on the basis of spectral and chemical studies by HPLC, IR analysis, partial hydrolysis with acid, methylation analysis, GC and 13C-NMR.
  
  
  RESULTS
  The molecular weight of SGPS2 was 650 000. Polysaccharide was composed of L- made up of (1 --> 2, 4) linked rhamnose, (1 --> 4) linked rhamnose residues in main chain; and (1 --> 2) linked rhamnose, (1 --> 3) linked rhamnose in side chains. Terminal residues attached main chain to rhamnose.
  
  
  CONCLUSIONS
  SGPS2 was composed of rhamnose and curonic acid.
authors.affiliation: Guangxi Key Laboratory of Environmental Engineering, Protection and Assessment, School of Environment and Resource of Guangxi Normal University, Guilin 541004, China.
authors.forename: Cui-Ping
authors.initials: CP
authors.lastname: Huang
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.forename: Qing-Ye
authors.initials: QY
authors.lastname: Liu
authors.forename: Xue-Wen
authors.initials: XW
authors.lastname: Lu
authors.forename: Ai-Ping
authors.initials: AP
authors.lastname: Meng
authors.forename: Sheng-Jun
authors.initials: SJ
authors.lastname: Zhu
mesh_terms: D002851:Chromatography, High Pressure Liquid; D019662:Cucurbitaceae / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry*; D005965:Glucuronates / Q000032:analysis*; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D008970:Molecular Weight; D010946:Plants, Medicinal / Q000737:chemistry; D011134:Polysaccharides / Q000737:chemistry* / Q000302:isolation & purification; D012210:Rhamnose / Q000032:analysis*
chemical_list: D005965:Glucuronates; D011134:Polysaccharides; D012210:Rhamnose