title: [Optimization of preparing technology for qiju dihuang oral liquid by orthogonal method].
abstract: L9(3)4 orthogonal experiment was performed to improve the clarity of Qiju Dihuang Oral Liquid. The result shows that the optimum pretreatment technology for the liquid includes alcohol concentration 75%, liquid pH 4.2 freezing temperature 3 degrees C and freezing time 48 hours.
authors.affiliation: Hu Qingyu Tang Pharmaceutical Factory, Hangzhou.
authors.forename: F
authors.initials: F
authors.lastname: Feng
authors.forename: S
authors.initials: S
authors.lastname: Xu
mesh_terms: D011232:Chemical Precipitation; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage; D006863:Hydrogen-Ion Concentration; D011786:Quality Control; D013678:Technology, Pharmaceutical / Q000379:methods*; D013696:Temperature; D013997:Time Factors
chemical_list: D004365:Drugs, Chinese Herbal