Elaidic acid
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| Names | |
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| IUPAC name
(E)-octadec-9-enoic acid
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| Other names
(E)-9-octadecenoic acid
(9E)-octadecenoic acid trans-9-octadecenoic acid 18:1 trans-9 C18:1 trans-9 | |
| Identifiers | |
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3D model (JSmol)
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PubChem CID
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| Properties | |
| C 18H 34O 2 | |
| Molar mass | 282.46 g/mol |
| Appearance | colorless waxy solid |
| Density | 0.8734 g/cm3 |
| Melting point | 45 °C (113 °F) |
| −204.8·10−6 cm3/mol | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Template:Chembox Footer/trackingTemplate:Short description
Elaidic acid is a chemical compound with the formula C
18H
34O
2, specifically the fatty acid with structural formula Page Module:Chem2/styles.css has no content.HOOC−(CH2)7−CH=CH−(CH2)7−CH3, with the double bond (between carbon atoms 9 and 10) in trans configuration. It is a colorless solid. Its salts and esters are called elaidates.
Elaidic acid is an unsaturated trans fatty acid, with code C18:1 trans-9. This compound has attracted attention because it is a major trans fat found in hydrogenated vegetable oils, and trans fats have been implicated in heart disease.[1]
It is the trans isomer of oleic acid. The name of the elaidinization reaction comes from elaidic acid.
Etymology
The name elaidic comes from the Ancient Greek word ἔλαιον (élaion), meaning oil.
Occurrence and bioactivity
Elaidic acid occurs mostly in industrial hydrogenation of polyunsaturated fatty acids.[2] It's also present in small amounts in goat and cow milk (very roughly 0.1% of the fatty acids)[3] and in some meats.[4]
Elaidic acid increases plasma cholesterylester transfer protein (CETP) activity which lowers HDL cholesterol.[5]
See also
References
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- ^ Page Module:Citation/CS1/styles.css has no content.Tardy, Anne-Laure; Morio, Béatrice; Chardigny, Jean-Michel; Malpuech-Brugère, Corinne (2011). "Ruminant and industrial sources of trans-fat and cardiovascular and diabetic diseases". Nutrition Research Reviews. 24 (1): 111–7. doi:10.1017/S0954422411000011. PMID 21320382.
- ^ Page Module:Citation/CS1/styles.css has no content.Wendeu-Foyet, Gaëlle; Bellicha, Alice; Chajès, Véronique; Huybrechts, Inge; Bard, Jean-Marie; Debras, Charlotte; Srour, Bernard; Sellem, Laury; Fezeu, Léopold K.; Julia, Chantal; Kesse-Guyot, Emmanuelle; Agaësse, Cédric; Druesne-Pecollo, Nathalie; Galan, Pilar; Hercberg, Serge (2023). "Different Types of Industry-Produced and Ruminant Trans Fatty Acid Intake and Risk of Type 2 Diabetes: Findings From the NutriNet-Santé Prospective Cohort". Diabetes Care. 46 (2): 321–330. doi:10.2337/dc22-0900. PMID 36542554. S2CID 255041911.
- ^ Page Module:Citation/CS1/styles.css has no content.Alonso L, Fontecha J, Lozada L, Fraga MJ, Juárez M (1999). "Fatty acid composition of caprine milk: major, branched-chain, and trans fatty acids". J. Dairy Sci. 82 (5): 878–84. doi:10.3168/jds.S0022-0302(99)75306-3. hdl:10261/113439. PMID 10342226.
- ^ Page Module:Citation/CS1/styles.css has no content.Stillwell, William (2016). "Chapter 23. Membranes and Human Health". An Introduction to Biological Membranes – Composition, Structure and Function (2 ed.). Elsevier. doi:10.1016/B978-0-444-63772-7.00023-3.
- ^ Page Module:Citation/CS1/styles.css has no content.Abbey M, Nestel PJ (1994). "Plasma cholesteryl ester transfer protein activity is increased when trans-elaidic acid is substituted for cis-oleic acid in the diet". Atherosclerosis. 106 (1): 99–107. doi:10.1016/0021-9150(94)90086-8. PMID 8018112.
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