Omega-9 fatty acid

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Types of Fats in Food
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Omega-9 fatty acids are a class of unsaturated fatty acids that have a C=C double bond in the ω-9 position. (See Nomenclature for terms and discussion of ω (omega) nomenclature.) Some ω-9s are common components of animal fat and vegetable oil.

Two ω-9 fatty acids important in industry are:

Unlike ω-3 and ω-6 fatty acids, ω-9 fatty acids are not classed as essential fatty acids (EFA). This is both because they can be created by the human body from unsaturated fat, and are therefore not essential in the diet, and because the lack of an ω-6 double bond keeps them from participating in the reactions that form the eicosanoids.

Under severe conditions of EFA deprivation, mammals will elongate and desaturate oleic acid to make mead acid, (20:3 ω-9). (Lipomics)  This also occurs to a lesser extent in vegetarians and semi-vegetarians. (Phinney, 1990)

List of omega-9 fatty acids

Common name Lipid name Chemical name
oleic acid 18:1 (n-9) 9-octadecenoic acid
eicosenoic acid 20:1 (n-9) 11-eicosenoic acid
mead acid 20:3 (n-9) 5,8,11-eicosatrienoic acid
erucic acid 22:1 (n-9) 13-docosenoic acid
nervonic acid 24:1 (n-9) 15-tetracosenoic acid

See also

References

  • Cyberlipid Center. "Polyenoic fatty acids". Retrieved February 11. Unknown parameter |accessyear= ignored (|access-date= suggested) (help); Check date values in: |accessdate= (help)
  • Phinney, SD, RS Odin, SB Johnson and RT Holman (1990). "Reduced arachidonate in serum phospholipids and cholesteryl esters associated with vegetarian diets in humans". Retrieved February 11. Unknown parameter |accessyear= ignored (|access-date= suggested) (help); Check date values in: |accessdate= (help)
  • Lipomics. "Mead acid". Retrieved February 14. Unknown parameter |accessyear= ignored (|access-date= suggested) (help); Check date values in: |accessdate= (help)

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