title: [Comparing the dissolution of Rb1 from the micropowder and common powder of Radix Panacis Quinquefolii].
abstract: OBJECTIVE
  To compare the dissolution of Rb1 from the micropowder and common powder of Radix Panacis Quinquefolii in vitro.
  
  
  METHODS
  The contents of Ginsenoside Rb1 in micropowder (99% over 0-30 microm) and common powder (180 microm) with and without the barrier of dialytic membrane were determined at different time by HPLC.
  
  
  RESULTS
  The speed and degree of dissolution of Ginsenoside Rb1 in micropowder were better than those in common powder (15-45 min, P < 0.05; 45-60 min, P < 0.01).
  
  
  CONCLUSIONS
  The dissolution of effective components in Radix Panacis Quinquefolii can be improved by SFCT.
authors.affiliation: Nanfang Lee Kum Kee Co., Ltd, Guangzhou 510665, China. xf_zhai@nflkk.com
authors.forename: Xu-feng
authors.initials: XF
authors.lastname: Zhai
authors.forename: Chen
authors.initials: C
authors.lastname: Zhang
authors.forename: Xiao-lei
authors.initials: XL
authors.lastname: Guo
mesh_terms: D002851:Chromatography, High Pressure Liquid; D036145:Ginsenosides / Q000737:chemistry / Q000302:isolation & purification*; D005894:Panax / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011208:Powders; D012995:Solubility; D013678:Technology, Pharmaceutical / Q000379:methods*; D013997:Time Factors
chemical_list: D036145:Ginsenosides; D011208:Powders; C442759:ginsenoside Rb1