title: [The optimation of extraction technology of chuanxiong and xiangfu compatibility by SFE-CO2].
abstract: OBJECTIVE
  To optimize the extraction conditions of Chuanxiong and Xiangfu compatibility by supercritical CO2 and control the quality of the extract.
  
  
  METHODS
  The orthogonal design experiments were used to select the optimal conditions and the factors were extraction pressure, extraction temperature, extraction time and flow rate of CO2. The extraction rate was used as inspection index. The contents of alpha-cyperolone and butenyl were detected by HPLC.
  
  
  RESULTS
  The optimal conditions were as follows: extraction pressure 25 Mpa, extraction temperature 45 degrees C, extraction time 2 h, flow rate of CO2 20 Kg/h. The average content of alpha-cyperolone, butenyl was 3.26%, 1.50% respectively.
  
  
  CONCLUSIONS
  The method of supercritical CO2 extraction is reliable and feasible and can be used in industry. The quality of the extract is stable and controlled.
authors.affiliation: Pharmaceutical Preparation Section, First Affiliated Hospital of Zhongshan University, Guangzhou 510700, China. linqlinj@126.com
authors.forename: Qing
authors.initials: Q
authors.lastname: Lin
authors.forename: Yuan
authors.initials: Y
authors.lastname: Li
authors.forename: Mei
authors.initials: M
authors.lastname: Li
authors.forename: Kai-Ming
authors.initials: KM
authors.lastname: Huang
mesh_terms: D000704:Analysis of Variance; D019661:Apiaceae / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry; D025924:Chromatography, Supercritical Fluid / Q000379:methods*; D029786:Cyperus / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D018517:Plant Roots / Q000737:chemistry; D011312:Pressure; D011427:Propiophenones / Q000032:analysis; D015203:Reproducibility of Results; D013678:Technology, Pharmaceutical / Q000379:methods; D013696:Temperature
chemical_list: D004365:Drugs, Chinese Herbal; D011427:Propiophenones; D002245:Carbon Dioxide