title: [Antimicrobial activity of the epicarp of the fruits of Paulownia fortunei and Paulownia tomentosa].
abstract: One antimicrobial substance was obtained from the epicarp of the fruits of Paulownia fortunei and Paulownia tomentosa. Other parts of the fruits and leaves had no detectable antimicrobial activity. The substance was active in vitro for Staphylococcus aureus and Bacillus subtilis while it had lower activity for Saccharomyces carlsbergensis and the lowest was for Escherichia coli. The active material was extracted with organic solvents (ether, ethanol and acetone). The activity "in vitro" was demonstrated by the method of dilution in nutrient agar media. The active substance looked as a resin and was insoluble in water at neutral or acid pH. It was very soluble in strong alkaline pH solution.
mesh_terms: D000900:Anti-Bacterial Agents / Q000302:isolation & purification* / Q000494:pharmacology; D000935:Antifungal Agents / Q000302:isolation & purification* / Q000494:pharmacology; D001412:Bacillus subtilis / Q000187:drug effects; D004926:Escherichia coli / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D010936:Plant Extracts / Q000494:pharmacology; D012116:Resins, Plant / Q000302:isolation & purification / Q000494:pharmacology; D012440:Saccharomyces / Q000187:drug effects; D012995:Solubility; D013211:Staphylococcus aureus / Q000187:drug effects; D014197:Trees
chemical_list: D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D010936:Plant Extracts; D012116:Resins, Plant
vernacular_title: Actividad antimicrobiana del epicarpio de los frutos de Paulownia fortunei y Paulownia tomentosa.