title: [Study on ultrafine vibration extraction technology of Rhizoma Chuanxiong].
abstract: OBJECTIVE
  To explore the best ultrafine vibration extraction technology of Rhizoma Chuanxiong.
  
  
  METHODS
  Using the content of ligustrazine hydrochloride and ferulic acid as determination indexes, quadrature test was used to choose extraction times, time, solvent amount and to compare with the result of conventional extraction technology.
  
  
  RESULTS
  The best condition of the Rhizoma chuanxiong was with 90% ethanol of 4 times volume, extracting 2 times in 25 degrees C, 15 minutes each time. Comparing with conventional extraction technology, extraction time of UVET was 1/6, solvent amount was 4/7, the extraction rate of marker components was 1.19 and 1.09 times, respectivley.
  
  
  CONCLUSIONS
  UVET can improve the extracting rate of effective constituents, reduce the time and solvent amount and be used in industrialization.
authors.affiliation: Shandong University of Traditional Chinese Medicine, Jinan 250355, China. dailongdailong@263.net
authors.forename: Long
authors.initials: L
authors.lastname: Dai
mesh_terms: D002851:Chromatography, High Pressure Liquid; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification; D030004:Ligusticum; D008516:Medicine, Chinese Traditional / Q000379:methods*; D010946:Plants, Medicinal / Q000737:chemistry*; D027343:Rhizome / Q000737:chemistry*; D013678:Technology, Pharmaceutical / Q000379:methods*
chemical_list: D004365:Drugs, Chinese Herbal; C101574:chuangxiong extract