title: [Study on water extraction process of Herba epimedii with microwave technology].
abstract: OBJECTIVE
  To study, the high polar media-water extraction process of Herba epimedii with the microwave technology.
  
  
  METHODS
  The single parameters of extraction process was investigated with dry extract yield and extraction efficiency of icariin as content index.
  
  
  RESULTS
  Through studying the single parameter, the optimal conditions are as follows: 70% ethanol as wetting solvent, volume of solvent to weight of material equal to 6:1 in wetting, 30 min wetting time, 2.5 min microwave irradiation time, volume of solvent to weight of material equal to 50:1 in extraction process, 10 min microwave-assisted extraction time.
  
  
  CONCLUSIONS
  Compared with conventional methods, microwave-assisted extraction (MAE) after Microwave Pretreament (MP) of raw material was higher extraction efficiency and time-saving.
authors.affiliation: Chemical Engineering Research Center, Shanghai 200237, China.
authors.forename: Rui-hua
authors.initials: RH
authors.lastname: Huang
authors.forename: Yong-chuan
authors.initials: YC
authors.lastname: Zhou
authors.forename: Wei
authors.initials: W
authors.lastname: Han
authors.forename: Xiu
authors.initials: X
authors.lastname: Deng
mesh_terms: D004365:Drugs, Chinese Herbal / Q000032:analysis / Q000302:isolation & purification*; D034181:Epimedium / Q000737:chemistry*; D005419:Flavonoids / Q000032:analysis / Q000302:isolation & purification*; D008872:Microwaves; D010946:Plants, Medicinal / Q000737:chemistry*; D012997:Solvents; D013678:Technology, Pharmaceutical / Q000379:methods
chemical_list: D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D012997:Solvents; C056599:icariin