Fatty acid composition, including trans‐isomers, was determined for four types of imported margarines consumed by the Bulgarian population. The results were compared with data obtained from a Bulgarian edible margarine produced under German license. Fatty acid composition and trans‐isomer content were determined by gas chromatography of fatty acid methyl esters on a packed and capillary column, respectively. The total contents of trans‐isomers of oleic and linoleic acid were within the ranges of 1.9–8.0% and 0.4–1.4%, respectively. The Bulgarian margarine contained similar quantities of trans‐isomers.
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Tsanev et al. (1998) studied this question.
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