title: [Studies on purification of polyprenol from Ginkgo biloba L. leaves].
abstract: OBJECTIVE
  To research the methods of purifying polyprenol from leaves of Ginkgo biloba L..
  
  
  METHODS
  The purity of polyprenol was determined by HPLC to select the optimal purifying conditions.
  
  
  RESULTS
  The optimal conditions were degreased by 160 times of petroleum ether-ethyl acetate (9:1) firstly, then through a silica gel column (100-140 mesh) and eluted with petroleum etherethyl acetate (19:1).
  
  
  CONCLUSIONS
  The methods are feasible to purify polyprenol from leaves of Ginkgo biloba L. and could increase the purity of polyprenol obviously.
authors.affiliation: Department of Pharmaceutical Engineering of Jiangsu University, Zhenjiang 212013.
authors.forename: Yonghui
authors.initials: Y
authors.lastname: Li
authors.forename: Shulan
authors.initials: S
authors.lastname: Su
authors.forename: Zhen
authors.initials: Z
authors.lastname: Ouyang
authors.forename: Kedi
authors.initials: K
authors.lastname: Yang
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D005019:Ethyl Ethers; D020441:Ginkgo biloba / Q000737:chemistry*; D045782:Hemiterpenes; D000439:Pentanols / Q000032:analysis / Q000302:isolation & purification*; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011108:Polymers / Q000032:analysis / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D005019:Ethyl Ethers; D045782:Hemiterpenes; D000439:Pentanols; D011108:Polymers; C009034:prenol