Eleostearic acid
Structural formula | ||||||||||
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α -leostearic acid (top) and β -leostearic acid (bottom) | ||||||||||
General | ||||||||||
Surname | Eleostearic acid | |||||||||
other names |
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Molecular formula | C 18 H 30 O 2 | |||||||||
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properties | ||||||||||
Molar mass | 278.44 g mol −1 | |||||||||
Physical state |
firmly |
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density |
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Melting point |
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boiling point |
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Refractive index |
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safety instructions | ||||||||||
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C |
The eleostearic acid or eleostearic acid , and eleostearic acid , is a conjugated and tri-unsaturated fatty acid from the group of omega-5 fatty acids . It is a trienoic acid in the group of trans fatty acids , it is also one of the conjugated linolenic acids (CLN).
There are two isomeric forms: (9 Z , 11 E , 13 E ) α -leostearic acid and all- trans - (9 E , 11 E , 13 E ) β -leostearic acid.
The α -Eleostearinsäure is esterified as triacylglycerol in the tung oil from Vernicia TYPES (Syn: Aleurites ), in the seeds of Momordica charantia ( Momordica spp.) And Gold prune plants ( Parinari spp.) As well as euphorbia Garcia nutans and Ricinocarpos bowmanii in high amounts up over 60% before. It is also found in pomegranate seed oil , but in much smaller amounts. Under the action of light, the α -leostearic acid in the seed oils is isomerized to form β -leostearic acid in smaller quantities.
Individual evidence
- ↑ a b W. Karrer : Constitution and occurrence of organic plant matter. Springer, 1958, ISBN 978-3-0348-6795-5 , p. 312 f.
- ↑ a b c d e f David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 95th edition. (Internet version: 2015), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-424.
- ↑ a b David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 93rd edition. (Internet version: 2012), CRC Press / Taylor and Francis, Boca Raton, FL, Biochemistry, pp. 7-8.
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ 9,11,13-Octadecatrienoic acid, (9Z, 11E, 13E) on PlantFa Database, accessed October 24, 2017.
- ↑ 9,11,13-Octadecatrienoic acid (beta-Eleostearic acid) ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. on PlantFa Database, accessed October 24, 2017.
- ^ Joan S. Hoffmann, W. G Bickford: New tung oil derivatives. United States Agricultural Research Service, 1956, pp. 1 f, archive.org .
- ^ Central office for scientific and technical research work of the Siemens group: Scientific publications from the Siemens group. Volume IV, Issue 2, Springer, 1925, ISBN 978-3-662-22753-4 , p. 295.