title: [Extraction of polysaccharide from Penthorum chinense].
abstract: OBJECTIVE
  To study the extraction technology of polysaccharide from Penthorum chinense.
  
  
  METHODS
  Single factor test and orthogonal experiment design methods L9 (3(3)) were applied to analyze the influence of solid-liquid rate, extraction temperature and time on the extraction percent of polysaccharide from Penthorum chinense.
  
  
  RESULTS
  The temperature significantly affected the extraction percent of the soluble polysaccharide, and the optimum conditions for the extraction technology were as follows: solid-liquid rate at 1:15, temperature at 95 degrees C, time for 3h. Under this condition, the extraction percent of polysaccharide from Penthorum chinense was 1.12%, RSD = 1.21%.
  
  
  CONCLUSIONS
  The research can provide a theoretical foundation for further development and utilization of polysaccharide from Penthorum chinense.
authors.affiliation: College of Life Sciences, China West Normal University, Nanchong 637002, China. edeng1983@163.com
authors.forename: E
authors.initials: E
authors.lastname: Deng
authors.forename: Jun
authors.initials: J
authors.lastname: Yang
authors.forename: Li-qiang
authors.initials: LQ
authors.lastname: Wang
authors.forename: Guang-bi
authors.initials: GB
authors.lastname: Wang
mesh_terms: D000704:Analysis of Variance; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D000431:Ethanol; D010946:Plants, Medicinal / Q000737:chemistry*; D011134:Polysaccharides / Q000032:analysis / Q000302:isolation & purification*; D031995:Saxifragaceae / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013678:Technology, Pharmaceutical / Q000379:methods*; D013696:Temperature; D013997:Time Factors
chemical_list: D004365:Drugs, Chinese Herbal; D011134:Polysaccharides; D000431:Ethanol