title: [Effect of solution environments on ceramic membrane microfiltration of model system of Chinese medicines].
abstract: OBJECTIVE
  To investigate the effect of differents solution environments on the ceramic membrane microfiltration of model system of Chinese medicines.
  
  
  METHODS
  Taking binary system of soybean protein-berberine as the research object, flux, transmittance of berberine and traping rate of protein as indexes, different solution environment on membrane process were investigated.
  
  
  RESULTS
  When the concentration of soybean protein was under 1 g x L(-1), the membrane flux was minimum with the traping of berberine decreased slightly as the concentration increased. When pH was 4, the flux was maximum with the traping rate of protein was 99%, and the transmittance of berberine reached above 60%.
  
  
  CONCLUSIONS
  The efficiency of membrane separation can be improved by optimizing the solution environment of water-extraction of chinese medicines. The efficiency of membrane separation is the best when adjust the pH to the isoelectric point of proteins for the proteins as the main pollutant in aqueous solution.
authors.affiliation: Key Laboratory of Separation Engineering for Chinese Medicine Compound, Nanjing University of Chinese Medicine, Nanjing 210029, China. zhanglj1019@163.com
authors.forename: Lianjun
authors.initials: L
authors.lastname: Zhang
authors.forename: Jin
authors.initials: J
authors.lastname: Lu
authors.forename: Kang
authors.initials: K
authors.lastname: Le
authors.forename: Tingming
authors.initials: T
authors.lastname: Fu
authors.forename: Liwei
authors.initials: L
authors.lastname: Guo
mesh_terms: D001599:Berberine / Q000737:chemistry; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D005374:Filtration / Q000295:instrumentation* / Q000379:methods; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008962:Models, Theoretical; D012996:Solutions / Q000737:chemistry; D030262:Soybean Proteins / Q000737:chemistry
chemical_list: D004365:Drugs, Chinese Herbal; D012996:Solutions; D030262:Soybean Proteins; D001599:Berberine