title: [Orthogonal experiment of the extraction of triterpenoids from stems of Hyptis suaveolens with microwave].
abstract: OBJECTIVE
  To study the best technology of the extraction of triterpenoids from the stems of Hyptis suaveolens with microwave.
  
  
  METHODS
  Orthogonal experiment was carried out to investigate 4 influential factors as follows: the time (A), the temperature (B), the solid fluid compared to (C), the NaOH density (D).
  
  
  RESULTS
  The optimal conditions for microwave extraction were A1 B2 C3 D2.
  
  
  CONCLUSIONS
  The microwave extraction can extract more triterpenoids from the stems of Hyptis suaveolens in shorter time with less energy. It also shows a promising prospect for leaching the effective constituents from Chinese herbal medicine by using microwave extraction.
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
authors.forename: Xiu-xiang
authors.initials: XX
authors.lastname: Huang
authors.forename: Cui-wu
authors.initials: CW
authors.lastname: Lin
authors.forename: Li-fen
authors.initials: LF
authors.lastname: Chen
authors.forename: Xia
authors.initials: X
authors.lastname: Yuan
authors.forename: Zi-hua
authors.initials: ZH
authors.lastname: Ning
mesh_terms: D000704:Analysis of Variance; D004365:Drugs, Chinese Herbal / Q000302:isolation & purification; D000431:Ethanol / Q000737:chemistry; D031331:Hyptis / Q000737:chemistry*; D008872:Microwaves; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D015203:Reproducibility of Results; D012972:Sodium Hydroxide / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D013678:Technology, Pharmaceutical / Q000295:instrumentation / Q000379:methods*; D013696:Temperature; D014315:Triterpenes / Q000032:analysis / Q000302:isolation & purification*; D014465:Ultrasonics
chemical_list: D004365:Drugs, Chinese Herbal; D014315:Triterpenes; D000431:Ethanol; D012972:Sodium Hydroxide