异油酸
















































异油酸





IUPAC名
(E)-Octadec-11-enoic acid
识别

CAS号
693-72-1  ✓

PubChem
5281127

ChemSpider
4444571

SMILES


InChI


InChIKey
UWHZIFQPPBDJPM-BQYQJAHWBK

ChEBI
28727
性质

化学式
C18H34O2

摩尔质量
 282.461 g/mol g·mol⁻¹
若非注明，所有数据均出自一般条件（25 ℃，100 kPa）下。

异油酸是一种可以从奶和乳制品（例如酸奶和奶酪）中获得的天然ω−7反式脂肪酸。



异油酸与健康


虽说异油酸是一种反式脂肪酸，但是这种天然反式脂肪可以降低人类血液里面的低密度胆固醇和三酸甘油酯。这正好与其它反式脂肪的作用相反。食用异油酸的人可以减少发生动脉硬化和心脏病的发病率。[1] 异油酸也是人奶中的主要反式脂肪。 [2][3]在哺乳动物体内，细胞会把异油酸转化成一种共轭亚油酸。[4][5]
共轭亚油酸可以抑制致癌物質的活性。[6]



参考文献





  1. ^ Natural trans fats may be good for you. May 19, 2008


  2. ^ 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


  3. ^ 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


  4. ^ Bauman, Dale. cis-9, trans-11 CLA - A Potent Anticarcinogen Found in Milk Fat. [2007-01-15]. （原始内容存档于2006-09-07）. 


  5. ^ Banni S, Angioni E, Murru E, Carta G, Melis M, Bauman D, Dong Y, Ip C. Vaccenic acid feeding increases tissue levels of conjugated linoleic acid and suppresses development of premalignant lesions in rat mammary gland. Nutr Cancer. 2001, 41 (1–2): 91–7. PMID 12094634. doi:10.1207/S15327914NC41-1&2_12. 


  6. ^ Lock AL, Corl BA, Barbano DM, Bauman DE, Ip C. The anticarcinogenic effect of trans-11 18:1 is dependent on its conversion to cis-9, trans-11 CLA by delta9-desaturase in rats. J Nutr. October 1, 2004, 134 (10): 2698–704 [2007-01-15]. PMID 15465769. 
























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脂類（脂肪）：以脂肪酸為主


饱和脂肪酸
（羧酸列表）











短链

蚁酸（C1） · 醋酸（C2） · 初油酸（C3） · 酪酸（C4） · 纈草酸（C5）
其他

己酸（C6） · 葡萄花酸（C7） · 辛酸（C8） · 壬酸（C9） · 癸酸（C10） · 十一酸（C11） · 月桂酸（C12） · 十三酸（C13） · 肉豆蔻酸（C14） · 十五酸（C15） · 棕櫚酸（C16） · 珠光脂酸（C17） · 硬脂酸（C18） · 十九酸（C19） · 花生酸（C20） · 二十一酸（C21） · 山嵛酸（英语：Behenic acid）（C22） · 二十三酸（英语：Tricosylic acid）（C23） · 木蠟酸（英语：Lignoceric acid）（木焦油酸）（C24） · 二十五酸（英语：Pentacosylic acid）（C25） · 蠟酸（C26） · 二十七酸（C27） · 褐煤酸（C28） · 二十九酸（C29） · 蜂花酸（C30） · 三十一酸（C31） · 蟲漆蠟酸（C32) · 葉虱酸（C33） · 三十四酸（C34） · 三十五酸（C35) · 三十六酸（C36）


不飽和脂肪酸





















ω−3多元不饱和

十六碳三烯酸（HTA）（16:3） · α-亚麻酸（ALA）（18:3） · 十八碳四烯酸（SDA）（18:4） · 二十碳三烯酸（ETE）（20:3） · 二十碳四烯酸（ETA）（20:4） · 二十碳五烯酸（EPA）（20:5） · 二十一碳五烯酸（HPA）（21:5） · 二十二碳五烯酸（DPA）（22:5） · 二十二碳六烯酸（DHA）（22:6） · 二十四碳五烯酸（Tetracosapentaenoic acid）（24:5） · 二十四碳六烯酸（Nisinic acid）（24:6）
ω−6多元不饱和

亚油酸（LA）（18:2） · 共轭亚油酸（CLA）（18:2） · γ-亚麻酸（GLA）（18:3） · 二十碳三烯酸（DGLA）（20:3） · 花生四烯酸（20:4） · 腎上腺酸（22:4） · 二十碳四烯酸（ETA）（20:4）
ω−7单元不饱和（英语：Omega-7 fatty acid）

棕榈油酸（16:1） · 异油酸（18:1） · 二十烯酸（20:1）
ω−9单元不饱和

油酸（18:1） · 反式油酸（trans-18:1） · 二十碳烯酸（20:1） · 芥酸（22:1） · 神经酸（鯊油酸）（24:1） · 11-二十碳烯酸（Gondoic acid）（20:1） · 二十碳三烯酸（Mead acid）（20:3）


反式脂肪酸

异油酸（18:1） · 反式油酸（trans-18:1）

生物分子構成：糖类（醇、醣蛋白、糖苷）、脂类（类花生酸、脂肪酸、磷脂、胆固醇与甾体中间产物、鞘脂）、核酸（碱基、核苷和核苷酸、核苷酸代谢中间产物）、蛋白质（氨基酸、氨基酸代谢中间产物）、四吡咯、血红素代谢中间产物



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