title: [Superfine comminution of Glycyrrhiza uralensis roots by vibration mill].
abstract: OBJECTIVE
  To discuss the mechanism of superfine comminution of traditional Chinese medicine (TCM) at low temperature.
  
  
  METHODS
  Glycyrrhiza uralensis roots were at room superfinely comminuted temperature and at low temperature by cryogenic vibration mill. The superfine powders were observed and analyzed by laser particle size analyzer and SEM.
  
  
  RESULTS
  The powder processed at low temperature was of smaller effective diameter and narrower size distribution and was also with smoother surface and smaller angle of repose.
  
  
  CONCLUSIONS
  The G. uralensis roots could be superfinely comminuted with high efficiency and simple procedure by vibration mill at low temperature.
authors.affiliation: Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Feng-shun
authors.initials: FS
authors.lastname: Wu
authors.forename: Li
authors.initials: L
authors.lastname: Chen
authors.forename: Yi-ping
authors.initials: YP
authors.lastname: Wu
mesh_terms: D029882:Glycyrrhiza uralensis; D010316:Particle Size; D018517:Plant Roots; D010946:Plants, Medicinal; D011208:Powders; D013678:Technology, Pharmaceutical / Q000295:instrumentation / Q000379:methods; D014732:Vibration
chemical_list: D011208:Powders