Deodorization of vegetable oils: Prediction of trans polyunsaturated fatty acid content

@article{Kemny2001DeodorizationOV,
  title={Deodorization of vegetable oils: Prediction of trans polyunsaturated fatty acid content},
  author={Zsolt Kem{\'e}ny and Katalin Recseg and Georges H{\'e}non and Katalin Kőv{\'a}ri and F. Zwobada},
  journal={Journal of the American Oil Chemists' Society},
  year={2001},
  volume={78},
  pages={973-979}
}
Kinetics of the formation of trans linoleic acid and trans linolenic acid were compared. Pilot plant-scale tests on canola oils were carried out to validate the laboratory-scale kinetic model of geometrical isomerization of polyunsaturated fatty acids described in our earlier publication. The reliability of the model was confirmed by statistical calculations. Formation of the individual trans linoleic and linolenic acids was studied, as well as the effect of the degree of isomerization on the… Expand

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References

SHOWING 1-10 OF 14 REFERENCES
Deodorization of vegetable oils. Part I: Modelling the geometrical isomerization of polyunsaturated fatty acids
Laboratory-scale treatments of canola oils similar to deodorization were carried out by applying the following conditions: reduced pressure with nitrogen or steam stripping at different temperaturesExpand
Further studies on artificial geometrical isomers of α-linolenic acid in edible linolenic acid-containing oils
Fifteen samples of commercial edible soybean and rapeseed oils (and mixtures of these) from Belgium, Great Britain and Germany have been analyzed for theirtrans-polyunsaturated fatty acid content.Expand
trans-Polyunsaturated fatty acids in French edible rapeseed and soybean oils
The fatty acid compositions of rapeseed and soybean oils marketed in France have been determined by gas liquid chromatography on a fused-silica capillary column coated with a 100% cyanopropylExpand
Heat-induced geometrical isomerization of α-linolenic acid: Effect of temperature and heating time on the appearance of individual isomers
The formation of linolenic acid geometrical isomers (LAGIs) was studied in linseed oil that was heated under vacuum in sealed ampoules at different temperatures (190–260°C) for several durationsExpand
Effect of temperature on linolenic acid loss and 18:3 Δ9-cis, Δ12-cis, Δ15-trans formation in soybean oil
Oil was extracted from soybeans, degummed, alkalirefined and bleached. The oil was heated at 160, 180, 200, 220 and 240°C for up to 156 h. Fatty acid methyl esters were prepared by boronExpand
Contribution of trans fatty acids from vegetable oils and margarines to the Belgian diet.
TLDR
Nineteen commercial samples of vegetable oils and margarines marketed in Belgium, Hungary, Hungary and Great Britain were analyzed by gas-liquid chromatography for their trans fatty acid (TFA) content to establish figures about the contribution of TFA from 'invisible fat' food products. Expand
Degradation of α-linolenic acid during heating
Degummed bleached rapeseed oil was heated at 210, 220, and 230°C for up to 86 h under reduced pressure with nitrogen stripping. No significant change of total linoleic acid content was found, but aExpand
Determination of tocopherols and tocotrienols in vegetable oils and fats by high performance liquid chromatography: results of a collaborative study and the standardised method
Chairman: 1983-85 M. Naudet (France); 1985-87 0. Levin (Sweden; Vice-chairman; A. Hautfenne (Belgium); Secretary: W. D. Pocklington (UK); Titular Members: J. L. BeareRogers (Canada; 1985-87); E.Expand
Trans Isomers of α-Linolenic Acid in Deodorized Oils
  • Lipid Technol. Newsletter
  • 1997
Modeling the Geometrical Isomerization of Polyunsaturated Fatty Acids, Ibid
  • 76:73–81
  • 1999
...
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2
...