title: Determination of the Juglone Content of Juglans regia Leaves by GC/MS.
abstract: The constituents of walnut (Juglans regia L.) leaves are represented by tannins, phenolics, and naphthoquinones, the characteristic compound being juglone. The content of juglone in the methanolic extract of the leaves determined by the GC/MS method was 9.9 ± 0.2 mg/100 g; small amounts (1.3 ± 0.02 mg/100 g) were recorded in the infusion, whereas in the decoction it was not detected. As some studies indicate toxicity of juglone, only decoctions should be recommended for therapeutic use.
authors.forename: Irena
authors.initials: I
authors.lastname: Matławska
authors.forename: Wiesława
authors.initials: W
authors.lastname: Bylka
authors.forename: Ewa
authors.initials: E
authors.lastname: Widy-Tyszkiewicz
authors.forename: Beata
authors.initials: B
authors.lastname: Stanisz
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D031324:Juglans / Q000737:chemistry*; D009285:Naphthoquinones / Q000032:analysis*; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry
chemical_list: D009285:Naphthoquinones; D010936:Plant Extracts; C005134:juglone