title: [Study on the extraction of isofavones in rhizoma belamcandae].
abstract: In orthogonal tests, five factors were evaluted which were ethanol concentration, ethanol quantity, diameter of drug powder, reflux time and repetition times. Consideration of industrial produce, the optimal extraction was A2B2C3D2E2. That is 4-20 meshes drug powder refluxed with 70% ethanol which was 6 times weight of powder for 1 hour, repeated 2 times.
authors.affiliation: China Pharmaceutical University, Nanjing 210038.
authors.forename: W
authors.initials: W
authors.lastname: Ji
authors.forename: M
authors.initials: M
authors.lastname: Qin
authors.forename: Z
authors.initials: Z
authors.lastname: Wang
mesh_terms: D000704:Analysis of Variance; D002626:Chemistry, Pharmaceutical / Q000379:methods; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D000431:Ethanol; D027621:Iridaceae / Q000737:chemistry*; D007529:Isoflavones / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D004365:Drugs, Chinese Herbal; D007529:Isoflavones; D000431:Ethanol