PMID: 11312892Apr 21, 2001Paper

Authentication of vegetable oils by bulk and molecular carbon isotope analyses with emphasis on olive oil and pumpkin seed oil

Journal of Agricultural and Food Chemistry
Jorge E Spangenberg, N Ogrinc

Abstract

The authenticity of vegetable oils consumed in Slovenia and Croatia was investigated by carbon isotope analysis of the individual fatty acids by the use of gas chromatography-combustion-isotope ratio mass spectrometry (GC/C/IRMS), and through carbon isotope analysis of the bulk oil. The fatty acids from samples of olive, pumpkin, sunflower, maize, rape, soybean, and sesame oils were separated by alkaline hydrolysis and derivatized to methyl esters for chemical characterization by capillary gas chromatography/mass spectrometry (GC/MS) prior to isotopic analysis. Enrichment in heavy carbon isotope ((13)C) of the bulk oil and of the individual fatty acids are related to (1) a thermally induced degradation during processing (deodorization, steam washing, or bleaching), (2) hydrolytic rancidity (lipolysis) and oxidative rancidity of the vegetable oils during storage, and (3) the potential blend with refined oil or other vegetable oils. The impurity or admixture of different oils may be assessed from the delta(13)C(16:0) vs. delta(13)C(18:1) covariations. The fatty acid compositions of Slovenian and Croatian olive oils are compared with those from the most important Mediterranean producer countries (Spain, Italy, Greece, and France).

References


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Citations

Nov 16, 2001·Phytochemical Analysis : PCA
Jul 21, 2012·Journal of Agricultural and Food Chemistry·Weiguo LiuJinzhao Liu
Jan 28, 2003·Isotopes in Environmental and Health Studies·M ZielińskiP E Yankwich
Jun 24, 2008·Isotopes in Environmental and Health Studies·Jorge E SpangenbergJoerg Schibler
Jun 15, 2007·Critical Reviews in Food Science and Nutrition·Ioannis S Arvanitoyannis, Antonios Vlachos
Apr 2, 2005·Biomedical Chromatography : BMC·Tibor CserhátiIvan Miksik
Jan 16, 2007·Rapid Communications in Mass Spectrometry : RCM·María A AramendíaFrancisco J Urbano
Feb 6, 2014·Rapid Communications in Mass Spectrometry : RCM·Wolfram Meier-AugensteinJose R Almirall
Dec 4, 2014·Analytica Chimica Acta·Patryk WłasiukGrzegorz Zadora
Jan 7, 2009·Rapid Communications in Mass Spectrometry : RCM·Paola IacuminTiziano Boschetti
Nov 30, 2013·Journal of the Science of Food and Agriculture·Jeremy S CowanDebra A Inglis
Jun 9, 2020·Isotopes in Environmental and Health Studies·Janaina L SouzaLuiz A Martinelli
Feb 5, 2019·Rapid Communications in Mass Spectrometry : RCM·Zhi LiuKaryne M Rogers
Sep 11, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Milena Bučar MiklavčičNives Ogrinc
Jul 26, 2017·Talanta·Mauro PaoliniFederica Camin
Jun 23, 2009·Journal of Agricultural and Food Chemistry·Ming-Qiang ZouHong Wang
Jan 7, 2009·Journal of Agricultural and Food Chemistry·Robert HrastarIztok Joze Kosir
Jun 12, 2010·Journal of Agricultural and Food Chemistry·Eva Katharina RichterFlorian Leiber
Mar 22, 2019·Journal of Agricultural and Food Chemistry·Stephanie Krauß, Walter Vetter

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