title: Triterpenes in the hexane extract of leaves of Olea europaea L.: analysis using 13C-NMR spectroscopy.
abstract: Two neutral triterpenes and a triterpene acid were identified and quantified directly, in the absence of any purification steps, in a precipitate obtained during the industrial extraction of the leaves of Olea europaea L. using 13C-NMR spectroscopy (spectrometer operating at 4.7 T equipped with a 10 mm probe). The method was optimised in order to reduce the duration of analysis with a routine NMR spectrometer. Together with long-chain linear compounds, erythrodiol, uvaol and oleanolic acid accounted for 27.3, 18.3 and 12.5% of the precipitate, respectively.
authors.affiliation: Université de Corse, Equipe Chimie et Biomasse, UMR CNRS 6134, Route des Iles Sanguinaire, 20000 Ajaccio, France.
authors.forename: Emilie
authors.initials: E
authors.lastname: Duquesnoy
authors.forename: Vincent
authors.initials: V
authors.lastname: Castola
authors.forename: Joseph
authors.initials: J
authors.lastname: Casanova
mesh_terms: D002247:Carbon Isotopes; D006586:Hexanes / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D031658:Olea / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry*; D014315:Triterpenes / Q000032:analysis* / Q000737:chemistry*
chemical_list: D002247:Carbon Isotopes; D006586:Hexanes; D010936:Plant Extracts; D014315:Triterpenes