title: [Study on the quality of Rhizome of Dioscorea persimilis].
abstract: OBJECTIVE
  To evaluate the quality of Rhizome of D. persimilis Prain et Burk.
  
  
  METHODS
  Determined the contents of 6 qualitative indexes in samples of Rhizome of D. persimilis Prain et Burk that were cultivated in Yongning, Bobai, Beiliu, Guiping and Rongxian of Guangxi and in sample of Rhizome of Dioscorea opposita Thunb, that was cultivated in Wenxian, Henan province.
  
  
  RESULTS
  The contents of water in them (%): 15.39, 18.52, 15.41, 13.96, 15.48, 15.74; the contents of protein in them (%): 7.06, 8.45, 9.20, 9.67, 8.63, 9.79; the contents of starch in them (%): 84.51, 86.51, 82.72, 83.65, 84.19, 79.13; the contents of water extracts in them (%): 6.19, 6.98, 8.95, 7.41, 6.70, 9.40; 90% EtOH extracts in them (%): 2.00, 2.04, 2.68, 2.20, 2.11, 3.53; the contents of 18 kinds of amino acids in them (%): 5.23, 6.31, 6.22, 6.78, 6.59, 6.83.
  
  
  CONCLUSIONS
  The quality of Rhizome of D. persimilis Prain et Burk cultivated in Guiping or Beiliu is beter than that of Rhizome of D. persimilis Prain et Burk cultivated in Yongning. The quality of Rhizome of D. persimilis Prain et Burk cultivated in Rongxian or Bobai are between those of Rhizome of D. persimilis Prain et Burk cultivated in Guiping or Beiliu and Rhizome of D. persimilis Prain et Burk cultivated in Yonging. The qualities of Rhizome of D. persimilis Prain et Burk cultivated in Guiping or Beiliu are similar to that of Yam.
authors.affiliation: Guangxi Traditional Medical College, Nanning, 530001.
authors.forename: Baozuo
authors.initials: B
authors.lastname: He
authors.forename: Jianping
authors.initials: J
authors.lastname: Jiang
authors.forename: Jianguang
authors.initials: J
authors.lastname: Mo
authors.forename: Daoping
authors.initials: D
authors.lastname: Huang
authors.forename: Lin
authors.initials: L
authors.lastname: Zhou
authors.forename: Huiling
authors.initials: H
authors.lastname: Ban
authors.forename: Yuzhong
authors.initials: Y
authors.lastname: He
mesh_terms: D000596:Amino Acids / Q000032:analysis; D027742:Dioscorea / Q000737:chemistry* / Q000145:classification; D010940:Plant Proteins / Q000032:analysis; D010945:Plants, Edible / Q000737:chemistry / Q000145:classification; D010946:Plants, Medicinal / Q000737:chemistry* / Q000145:classification; D011786:Quality Control; D027343:Rhizome / Q000737:chemistry; D013213:Starch / Q000032:analysis; D014867:Water / Q000032:analysis
chemical_list: D000596:Amino Acids; D010940:Plant Proteins; D014867:Water; D013213:Starch