title: 31P NMR spectroscopy in the quality control and authentication of extra-virgin olive oil: a review of recent progress.
abstract: This review is a brief account on the application of a novel methodology to the quality control and authentication of extra-virgin olive oil. This methodology is based on the derivatization of the labile hydrogens of functional groups, such as hydroxyl and carboxyl groups, of olive oil constituents with the phosphorus reagent 2-chloro-4,4,5,5-tetramethyldioxaphospholane, and the use of the (31)P chemical shifts to identify the phosphitylated compounds. Various experimental aspects such as pertinent instrumentation, sample preparation, acquisition parameters and properties of the phosphorus reagent are reviewed. The strategy to assign the (31)P signals of the phosphitylated model compounds and olive oil constituents by employing 1D and 2D NMR experiments is presented. Finally, the capability of this technique to assess the quality and the genuineness of extra-virgin olive oil and to detect fraud is discussed.
authors: NMR Laboratory, Department of Chemistry, University of Crete, Voutes, 710 03 Heraklion, Crete, Greece. dais@chemistry.uoc.gr
authors: Photis
authors: P
authors: Dais
authors: Apostolos
authors: A
authors: Spyros
mesh_terms: D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D000069463:Olive Oil; D010636:Phenols / Q000032:analysis / Q000737:chemistry; D010759:Phosphorus Isotopes / Q000032:analysis*; D010938:Plant Oils / Q000737:chemistry* / Q000592:standards*; D011786:Quality Control; D015203:Reproducibility of Results
chemical_list: D000069463:Olive Oil; D010636:Phenols; D010759:Phosphorus Isotopes; D010938:Plant Oils