title: [Influence of decocting time on the amount of anthraguinone diffused from Cassia seeds].
abstract: OBJECTIVE
  To study the influence of decocting time on the amount of anthraquinone diffused from the cassia seeds.
  
  
  METHODS
  The amount of anthraquinone in the decoctions made in different lengths of decocting time was determined by spectrophotometry (for intact seeds and powdered seeds).
  
  
  RESULTS
  Fast nonlinear diffusion district, slow linear diffusion district and ceasing diffusion district were shown on the light absorption-decocting time curves, and appropriate smashing of the cassia seed facilitated the diffusion of anthraquinone.
  
  
  CONCLUSIONS
  The best decocting time for anthraquinone to diffuse from the cassia seeds should be the ending time of the fast nonlinear diffusion district, while the second decoction should not be given up.
authors.affiliation: Chemical Engineering College, Xi'an Jiaotong University, Xi'an 710049.
authors.forename: X
authors.initials: X
authors.lastname: Li
authors.forename: F
authors.initials: F
authors.lastname: Liu
mesh_terms: D000880:Anthraquinones / Q000032:analysis*; D002366:Cassia / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D006358:Hot Temperature; D010946:Plants, Medicinal / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry; D013997:Time Factors
chemical_list: D000880:Anthraquinones; D004365:Drugs, Chinese Herbal