9(E),12(Z)-Octadecadienoic acid is an ω-6 polyunsaturated fatty acid and an isomer of linoleic acid that contains a trans double bond at the C9 position. It has been found as a minor component of bovine milk fat and in partially hydrogenated vegetable oils.1 9(E),12(Z)-Octadecadienoic acid levels increase in rabbit meat following supplementation with heated sunflower oil, α-tocopheryl acetate, and zinc.2
1.Precht, D., and Molkentin, J.Trans‐geometrical and positional isomers of linoleic acid including conjugated linoleic acid (CLA) in German milk and vegetable fatsEur. J. Lipid Sci. Technol.99(9)319-326(1997) 2.Tres, A., Bou, R., Codony, R., et al.Oxidized oils and dietary zinc and ɑ-tocopheryl acetate supplementation: effects on rabbit plasma, liver and meat fatty acid composition and meat Zn, Cu, Fe and Se contentAnimal4(11)1929-1939(2010)