title: [Optimizing extraction process of Scutellaria barbata by golden section method].
abstract: OBJECTIVE
  To probe into the feasibility of golden section method in the optimization of the extraction process of Scutellaria barbata.
  
  
  METHODS
  With the determination of the content of scutellarin and total flavonoids, selecting the range of alcohol concentration in the extraction of S. barbata was determined by the golden section method and method of equal interval, and validated it by orthogonal design.
  
  
  RESULTS
  The best extraction technique is that extract 3 times with 15 times of the alcohol which concentration is 70%, and each time for 1 h.
  
  
  CONCLUSIONS
  Applying golden section method in the extraction of S. barbata is practical, which as a method of preliminary trial, indicates that golden section method can also be applied into the field of optimization of extraction process of traditional Chinese medicine.
authors.affiliation: College of Chinese Pharmacy, Beijing University of Traditional Chinese Medicine, Beijing 100102, China. 24liujunyan@yahoo.com.cn
authors.forename: Jun-Yan
authors.initials: JY
authors.lastname: Liu
authors.forename: Yu-Rong
authors.initials: YR
authors.lastname: Wang
authors.forename: Yi
authors.initials: Y
authors.lastname: Liu
mesh_terms: D000438:Alcohols / Q000737:chemistry; D047310:Apigenin / Q000032:analysis; D002138:Calibration; D005591:Chemical Fractionation / Q000379:methods*; D002851:Chromatography, High Pressure Liquid; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D005240:Feasibility Studies; D005419:Flavonoids / Q000032:analysis; D005965:Glucuronates / Q000032:analysis; D010936:Plant Extracts / Q000032:analysis / Q000302:isolation & purification*; D031363:Scutellaria / Q000737:chemistry*; D013997:Time Factors; D014466:Ultraviolet Rays
chemical_list: D000438:Alcohols; D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D005965:Glucuronates; D010936:Plant Extracts; C524947:Scutellaria barbata extract; C484876:scutellarin; D047310:Apigenin