title: [Optimization of extraction technics of total saponins from Pulsatilla cernua].
abstract: OBJECTIVE
  The extraction condition of total saponins from Pulsatilla cenua by ultrasonic wave was optimized by single factor and orthogonal experiments.
  
  
  METHODS
  The largest absorbency of saponin was intended to be 470 nm by wavelength scan method with the pulchinenoside B4 as control sample, the linear relationship was observed between the absorbency and the content of saponin in the range of 0 - 0.040 mg/mL.
  
  
  RESULTS
  The optimal conditions of extraction was as following: 80% of alcohol concentration, 40 min of ultrasonic time, 1: 20 of solid to liquid ratio, 80 W of ultrasonic power and one time for extraction. Among them, alcohol had the most significant effect on the extraction of total saponins.
  
  
  CONCLUSIONS
  The content of total saponins in Pulsatilla cernua was 4. 32% under the optimal condition. The method developed here is efficient, stable, accurate and repeatable.
authors.affiliation: College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China. cjmin820518@126.com
authors.forename: Hai-Yan
authors.initials: HY
authors.lastname: Li
authors.forename: Ning
authors.initials: N
authors.lastname: Hao
authors.forename: Yong-Nan
authors.initials: YN
authors.lastname: Xu
authors.forename: Zhong-Yun
authors.initials: ZY
authors.lastname: Piao
mesh_terms: D000704:Analysis of Variance; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D000431:Ethanol / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D031946:Pulsatilla / Q000737:chemistry*; D015203:Reproducibility of Results; D012503:Saponins / Q000032:analysis / Q000302:isolation & purification*; D012997:Solvents / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D013678:Technology, Pharmaceutical / Q000379:methods*; D013696:Temperature; D013997:Time Factors; D014465:Ultrasonics
chemical_list: D004365:Drugs, Chinese Herbal; D012503:Saponins; D012997:Solvents; D000431:Ethanol