![]() Trans fatty acids originate from two main sources either through alteration of dietary unsaturated fatty acids in the rumen by rumen bacteria (via the biohydrogenation pathway) or from chemical processing (partial hydrogenation) of unsaturated fatty acids (e.g. Naturally occurring fats and oils normally only contain cis fatty acids. Fatty acids can differ in shape (arrangement of the atoms around double bonds in the chain) with the two major categories referred to as ‘ cis ’ and ‘ trans ’ isomers (Figure 1). ![]()
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