title: Detection of antifungal activity in Belamcanda chinensis by a single-cell bioassay method and isolation of its active compound, tectorigenin.
abstract: The antifungal activity of Belamcanda chinensis was evaluated by a single-cell bioassay method. An active fraction was separated by silica gel column chromatography and reverse-phase HPLC. The isolated compound was found to be identical to tectorigenin (5,7-dihydroxy-3-(4-hydroxy phenyl)-6-methoxy-4H-1-benzopyran-4-one) which has formerly appeared in the literature without any remarks on its antimicrobial activity. Antimicrobial activity was investigated against 17 strains of fungi and 6 strains of bacteria. This compound showed marked antifungal activity against dermatophytes of the genera Trichophyton, the minimum inhibitory concentration (MIC) being in the range of 3.12-6.25 mg/ml.
authors.affiliation: Natural Products Research Institute, Seoul National University, Jongro, Korea. ohkibong@snu.ac.kr
authors.forename: K B
authors.initials: KB
authors.lastname: Oh
authors.forename: H
authors.initials: H
authors.lastname: Kang
authors.forename: H
authors.initials: H
authors.lastname: Matsuoka
mesh_terms: D000935:Antifungal Agents / Q000302:isolation & purification / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects; D002851:Chromatography, High Pressure Liquid; D005658:Fungi / Q000187:drug effects; D007529:Isoflavones / Q000302:isolation & purification / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D014249:Trichophyton / Q000187:drug effects
chemical_list: D000935:Antifungal Agents; D007529:Isoflavones; C120039:tectorigenin