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|Section2= }} Vaccenic acid, also known as (E)-Octadec-11-enoic acid is a naturally occurring trans-fatty acid found in the fat of ruminants and in dairy products such as milk, butter, and yogurt.〔(Natural trans fats may be good for you. ) May 19, 2008〕 It is also the predominant fatty acid comprising trans fat in human milk.〔Precht, D and J.Molkentin C18:1, C18:2, and C8:3 trans and cis fatty acid isomers including conjugated cis delta 9, trans delta 11 linoleic acid (CLA) as well as total fat composition of German human milk lipids, Nahrung 1999 43(4) 233-244〕〔Friesen, R, and S.M. Innis, Trans Fatty acids in Human milk in Canada declined with the introduction of trans fat food labeling, J. Nut 2006, 136 2558-2561〕 Its IUPAC name is (''E'')-11-octadecenoic acid, and its lipid shorthand name is 18:1 ''trans''-11. The name was derived from the Latin ''vacca'' (cow). Vaccenic acid was discovered in 1928 in animal fats and butter. It is the main ''trans'' fatty acid isomer present in milk fat.〔 Mammals convert it into rumenic acid, a conjugated linoleic acid, where it shows anticarcinogenic properties. Its stereoisomer, cis-vaccenic acid, is an omega-7 fatty acid, is found in Sea Buckthorn (''Hippophae rhamnoides'') oil.〔(【引用サイトリンク】author= Federal Research Centre for Nutrition and Food - Institute for Lipid Research )〕 Its IUPAC name is (''Z'')-11-octadecenoic acid, and its lipid shorthand name is 18:1 ''cis''-11. ==Health== A 2008 study at the University of Alberta suggests that vaccenic acid feeding in rats over 16 weeks resulted in lowered total cholesterol, lowered LDL cholesterol and lower triglyceride levels. The researchers are preparing to conduct further research, including human clinical trials.〔AFNS. (Alberta natural trans fat research earns global recognition ). April 2, 2008.〕 Vaccenic acid is also found in human orbitofrontal cortex of patients with bipolar disorder and schizophrenia. Oxidation of omega-7 unsaturated fatty acids on the skin surface, such as palmitoleic acid and vaccenic acid, may be the cause of the phenomenon commonly known as old person smell. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「vaccenic acid」の詳細全文を読む スポンサード リンク
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