Rumenic acid

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Rumenic acid
Rumenic acid
CAS number 2540-56-9 N
PubChem 5280644
ChemSpider 4444245 N
KEGG C04056 N
Jmol-3D images Image 1
Molecular formula C18H32O2
Molar mass 280.45 g mol−1
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Rumenic acid, also known as bovinic acid, is a conjugated linoleic acid (CLA) found in the fat of ruminants and in dairy products. It is an omega-7 trans fat. Its lipid shorthand name is cis-9, trans-11 18:2 acid. The name was proposed by Kramer et al. in 1998.[1] It is formed along with vaccenic acid by biohydrogenation of dietary polyunsaturated fatty acids in the rumen.[2] It can be considered as the principal dietary form, accounting for as much as 85-90% of the total CLA content in dairy products.[3]


  1. ^ Kramer J, Parodi P, Jensen R, Mossoba M, Yurawecz M, Adlof R (1998). "Rumenic acid: a proposed common name for the major conjugated linoleic acid isomer found in natural products". Lipids 33 (8): 835. doi:10.1007/s11745-998-0279-6. PMID 9727617. 
  2. ^ F. Destaillats, E. Buyukpamukcu, P.-A. Golay, F. Dionisi and F. Giuffrida (2005). "Letter to the Editor: Vaccenic and Rumenic Acids, A Distinct Feature of Ruminant Fats". Journal of Dairy Science 88 (449): 449. doi:10.3168/jds.S0022-0302(05)72705-3. 
  3. ^ Cyberlipid. "Polyenoic Fatty Acids". Retrieved 2007-01-17.