PMID: 8585248Dec 1, 1995Paper

Determination of trans-octadecenoic acids in German margarines, shortenings, cooking and dietary fats by Ag-TLC/GC

Zeitschrift für Ernährungswissenschaft
J Molkentin, D Precht

Abstract

According to numerous, even recent studies, trans fatty acids (TFA) are related to coronary heart disease. Thus, for the evaluation of the daily TFA-intake precise data on the content of TFA in currently available edible fats are of great interest. The present study gives a comprehensive overview on total trans-octadecenoic acid contents in 93 brands of German margarines, shortenings, cooking and dietary fats purchases in 1994, that were obtained by a two-dimensional chromatography method (Ag-TLC/GC). Conventional margarines were found to contain 0.17-25.90 wt% (n = 46) and shortenings/cooking fats 0.04-32.51 wt% (n = 16) TFA related to total fatty acids. Mean values were 9.32 resp. 9.79%, whereas dietary and reformatory fats exhibited a mean of 0.65% (n = 31) TFA. Among conventional margarines the highest TFA contents were detected in products (n = 11) derived exclusively from sunflower oil (mean value = 20.71%). Seasonal changes in single brands were relatively small.

References

Feb 1, 1978·Journal of the American Oil Chemists' Society·L M SmithT Dairiki
Jun 1, 1978·The American Journal of Clinical Nutrition·H Heckers, F W Melcher
May 1, 1977·Journal of the American Oil Chemists' Society·D M OttensteinV Mahadevan
Sep 1, 1992·Zeitschrift für Ernährungswissenschaft·H Steinhart, A Pfalzgraf
Oct 1, 1991·Prostaglandins, Leukotrienes, and Essential Fatty Acids·D C Roberts
Mar 1, 1994·Zeitschrift für Ernährungswissenschaft·A PfalzgrafH Steinhart

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