Stable isotope characterization of olive oils: II‐deuterium distribution in fatty acids studied by nuclear magnetic resonance (SNIF‐NMR)

Royer, Anne-Lise; Naulet, N.; Mabon, Françoise; Lees, M.; Martin, G. J.

doi:10.1007/s11746-999-0232-y

Cited by 18 publications

(21 citation statements)

References 17 publications

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“…As anticipated, the (D/H) 9,10,12,13 value is the most impoverished and is close to the (D/H) 1 value obtained on the mixed sample (Table 1). Similarly, the (D/H) 11 value is highly impoverished and, when the standard errors in measuring this position are taken into account, does not differ significantly from the (D/H) 2 value obtained on the mixed sample. This indicates that no fractionation had taken place during workup, as the (D/H) 2 value for the mixed sample is due exclusively to the 4 present.…”

Section: Separationmentioning

confidence: 78%

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Natural Deuterium Distribution in Fatty Acids Isolated from Peanut Seed Oil: A Site-Specific Study by Quantitative 2H NMR Spectroscopy

et al. 2002

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Section: Separationmentioning

confidence: 78%

“…Similarly, both the (D/H) 8 and (D/H)14 values are obtained and found not to be impoverished. In contrast, the (D/H)11 value is markedly impoverished.…”

mentioning

confidence: 88%

Natural Deuterium Distribution in Fatty Acids Isolated from Peanut Seed Oil: A Site-Specific Study by Quantitative 2H NMR Spectroscopy

et al. 2002

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“…By using the 3 regions with greatest representation in the data set, all but one of a test set of 34 samples were correctly predicted [84]. Site-specific natural isotope fractionation of hydrogen was investigated, at natural abundance, by deuterium NMR (SNIF-NMR) on approximately 200 olive oil samples and clusters of signals obtained were explained in terms of geographical and temporal parameters and on a climatic basis [85].…”

Section: Spectroscopic Methodsmentioning

confidence: 99%

Authenticity of fats and oils

Ulberth¹,

Buchgraber²

2000

Eur. J. Lipid Sci. Technol.

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Food authenticity has become a focal point attracting the attention of producers, consumers, and policy makers. Although in most cases adulteration of fats and oils does not pose a threat to public health, fundamental rights of consumers (right of correct information and buying "value-for-money") are violated by fraudulent malpractice. Fraud is only economically viable, if a cheaper commodity can be made to resemble a genuine, more expensive product. The extent of adulteration that is possible is quite limited and, hence, the basic product that is being adulterated cannot be fundamentally different from the genuine material. Most methods to detect fraud rely on a thorough knowledge of the natural variation of characteristic constituents of the commodity concerned and make use of complex statistical procedures to derive indicators of adulteration. A range of analytical methods to detect fraud has to be developed, modified, and reappraised on a continuous basis to be a step ahead of those pursuing these illegal activities. In this article the technical merit of different analytical platforms to establish the authenticity of oils and fats is reviewed.

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“…Naturally occurring molecules contain isotopes in varying proportions, causing them to have slightly different physical and chemical properties (80).The natural distribution of isotopes in organic molecules may exhibit significant deviations with respect to the statistical repartition. These variations of stable isotopes ( 2 H/ 1 H, 13 C/ 12 C, and 18 O/ 16 O ratios) represent important tools for reconstructing past climate conditions (81) and determining the source of the compounds (82)(83)(84)(85) and their biosynthetic pathway (86).…”

Section: How Random Is the Natural Abundance?mentioning

confidence: 99%