PMID: 11929272Apr 4, 2002Paper

Determination of the diglyceride content in greek virgin olive oils and some commercial olive oils by employing (31)P NMR spectroscopy

Journal of Agricultural and Food Chemistry
Penelope FronimakiPhotis Dais

Abstract

In this study, the diglyceride contents of 96 samples of virgin olive oils from the regions of Crete, Lesvos, Messinia, Pilion, Zakynthos, Halkidiki, and Ilia, 15 samples of commercial extra virgin and pure olive oils, and 3 samples each of refined olive oils and pomace oils were determined by a facile method introduced in a previous publication. This method is based on the phosphitylation of the free hydroxyls of the diglycerides with 2-chloro-4,4,5,5-tetramethyldioxaphospholane and the integration of the appropriate peaks in the (31)P NMR spectra. This preliminary study showed interesting trends in the diglyceride content of the virgin olive oils from the various regions of Greece that can be used as simple criteria to assess the olive oil characteristics. Analysis of variance has been carried out for the diglyceride content of each region in an attempt to detect possible differences in the diglyceride levels among the various regions. Finally, the relationship between the ratio of 1,2-diglycerides to the total amount of diglycerides and the total amount of diglycerides has been used to monitor the quality of virgin olive oils, commercial olive oils, refined olive oils, and pomace oils.

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Citations

Sep 27, 2003·Phytochemical Analysis : PCA
Apr 25, 2007·Critical Reviews in Food Science and Nutrition·Wilailuk ChaiyasitEric A Decker
Feb 16, 2013·Analytica Chimica Acta·Photis Dais, Emmanuel Hatzakis
May 23, 2013·Food Chemistry·Francesco CaponioTommaso Gomes
Mar 1, 2016·Bioscience, Biotechnology, and Biochemistry·Satoshi TsuzukiTohru Fushiki
Apr 14, 2007·Magnetic Resonance in Chemistry : MRC·Christopher A Crutchfield, Douglas J Harris
Mar 21, 2007·Magnetic Resonance in Chemistry : MRC·Photis Dais, Apostolos Spyros
Sep 8, 2010·Journal of Mass Spectrometry : JMS·Pasquale AgozzinoKàroly Vèkey
Sep 25, 2012·Magnetic Resonance in Chemistry : MRC·Alexia Agiomyrgianaki, Photis Dais
Feb 9, 2012·Magnetic Resonance in Chemistry : MRC·Luisa Mannina, Anatoly P Sobolev
Aug 29, 2007·Analytica Chimica Acta·Giovanna Vlahov
Mar 24, 2015·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Muhamad Roddy RamliRaznim Arni Abd Razak
Dec 11, 2019·Journal of the Science of Food and Agriculture·Emilio San MartínJesús H Busto
Aug 9, 2019·Nature Protocols·Xianzhi MengDimitris S Argyropoulos
Jan 1, 2019·Comprehensive Reviews in Food Science and Food Safety·Emmanuel Hatzakis
Jan 31, 2021·Metabolites·Georgios TheodoridisOn Behalf Of The FoodOmicsGR Ri Consortium
Feb 2, 2006·Journal of Agricultural and Food Chemistry·Stella Christophoridou, Photis Dais
Feb 29, 2008·Journal of Agricultural and Food Chemistry·Emmanuel Hatzakis, Photis Dais
Jun 26, 2008·Journal of Agricultural and Food Chemistry·Fabian M DayritIan Mitchelle S de Vera

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