Abstract
Nearly 200 olive oils produced in the Mediterranean basin, mainly in Greece, during 4 yr from 1993 to 1996, were studied by gas chromatography (GC) and on-line GC-isotope ratio mass spectrometry (GC-C-IRMS). The composition of the oils in the more abundant fatty acids (C16:0, C16:1, C18:0, C18:1, C18:2, and C18:3) was obtained by GC after transesterification of the triglycerides into methyl esters. Using the hyphenated GC-C-IRMS technique, the 13C contents of the three most abundant acids, C16:0, C18:1, and C18:2, were measured with satisfactory accuracy. The results, analyzed in terms of geographical, temporal, and botanical factors, provide new criteria for the authentication of olive oils.
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Royer, A., Gerard, C., Naulet, N. et al. Stable isotope characterization of olive oils. I—Compositional and carbon-13 profiles of fatty acids. J Amer Oil Chem Soc 76, 357–363 (1999). https://doi.org/10.1007/s11746-999-0243-8
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DOI: https://doi.org/10.1007/s11746-999-0243-8