Dear Mark:

enclosed you can find some d18O value ( in per mill vs. V-SMOW) plus
corresponding references.
Best regards

Roland


Glycerol (plants, wine, animal ...)
?                                 Rossmann et al., 1998
Fatty acids, water plants (water -5.9)     +11.7 ± 1.4               Bricout,
1978; Bricout, 1979
Fatty acids, water plants (water 0.8)     +16.7
Bricout, 1978; Bricout, 1979
Triglycerides (peanut, corn, cotton,       +10.0 - +16.6
Hillaire-Marcel, 1986
cambra, soya)
Olive oil (Italy)
+29.4                                Angerosa et al., 1999
Olive oil (Mediterranean)                      +20.7 - +28.5
Angerosa et al., 1999

Breas et al., 1998

References:

Angerosa F, Bréas O, Contento S, Guillou C, Reniero F, Sada E (1999)
Application of stable isotope ratio analysis to the characterisation of the
geographical origin of olive oils. J Agric Food Chem 47: 1013-1017

Breas O et al. (1998) Oxygen-18 measurement by continuous flow
pyrolysis/isotope ratio mass spectrometry of vegetable oils. Rapid Comm Mass
Spectrom 12, 188-192

Bricout J (1978) Recherches sur le fractionnement des isotopes stables de
l’hydrogène et de l’oxygène dans quelques végétaux. Rev Cytol Biol Végét - Bot
1: 133-209

Bricout J (1979) Natural abundance levels of 2H and 18O in plant organic
matter. In: ER Klein, PD Klein, eds, Stable Isotopes, Proc 3rd Int Conf,
Academic Press, New York, pp. 215-222

Hillaire-Marcel G (1986) Isotopes and food. In P Fritz, JC Fontes, eds,
Handbook of En-viron-mental Isotope Geochemistry, Vol. 2: The Terrestrial
Environment B, Elsevier, Amster-dam, pp. 507-547

Rossmann A, Schmidt H-L, Hermann A, Ristow R (1998) Multielement stable
isotope ratio analysis of glycerol to determine its origin in wine. Z Lebensm
Unters Forsch A 207: 237-243


Mark Clementz schrieb:

> Hello,
>
> I was wondering if anyone knew of information on the oxygen isotope
> composition of lipids, specifically fatty acids.  Any information would be
> greatly appreciated.
>
> Thanks,
> Mark Clementz

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Dr. Roland A. Werner
Max-Planck-Institut fuer Biogeochemie
Carl-Zeiss-Promenade 10, 07745 Jena, Germany
Postanschrift:
Postfach 10 01 64, 07701 Jena, Germany
Tel.: +49-3641-643719, -643825
Fax:  +49-3641-643710
e-mail: [log in to unmask]

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