April, 2018 update

    • Lipid of the month

      Palmitelaidic acid

      Palmitelaidic acid (systematic name: 9E-hexadecenoic acid) is a trans fatty acid (the trans isomer of palmitoleic acid). Trans fatty acids are known to cause changes in plasma lipids and lipoprotein phenotypes, but the mechanisms involved are unknown. The major dietary sources of trans fatty acids are partly hydrogenated vegetable oils, mainly elaidic acid (9E-octadecenoic acid). Additional sources are animal and dairy fats (palmitelaidic acid and trans-vaccenic acid (11E-octadecenoic acid)) and partly hydrogenated fish oils. Palmitelaidic acid has been reported as the predominant trans-16:1 isomer in cheeses made with goat and sheep milk.

      Lipid of the month archive

"Lipid Matters - A Personal Blog" — by William (Bill) W. Christie

Apr 18th, 2018

Concerns over the nutritional effects of fatty acids with trans double bonds have created a need for methodologies that enable analysts to determine the nature and amounts of the trans isomers of polyunsaturated fatty acids that may be generated in the refining process of commercial oils. Two papers have just appeared on the topic. …

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