γ-terpinene
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| General | ||||||||||||||||
| Surname | γ-terpinene | |||||||||||||||
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| Molecular formula | C 10 H 16 | |||||||||||||||
| Brief description |
colorless, characteristic smelling oil |
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| properties | ||||||||||||||||
| Molar mass | 136.24 g mol −1 | |||||||||||||||
| Physical state |
liquid |
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| density |
0.85 g cm −3 |
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| boiling point |
183 ° C |
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| solubility |
bad in water |
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| Refractive index |
1.474 (20 ° C) |
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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 | ||||||||||||||||
γ-Terpinene is a naturally occurring chemical compound, in the pure state a colorless, pine-like smelling oil that is contained in many essential oils , especially citrus fruits and aromatic plants . Chemically it is a cyclic monoterpenic hydrocarbon with the backbone of p-menthane and is isomeric with other terpinenes . It differs from α-terpinene in that it has a less lemon-like, softer aroma. γ-terpinene has an antimicrobial and anti-inflammatory effect. It can be made from p- cymene and oxidizes to this in air. γ-terpinene inhibits the enzymes acetylcholinesterase and aldose reductase .
Occurrence
Apart from essential lemon oil and lime oil , γ-terpinene is found in oil from caraway , cumin , ajwain , stone mint , coriander , marjoram ; in thyme oil , bergamot oil , cedar leaves , oregano and nutmeg .
literature
- George A. Burdock: Encyclopedia of Food and Color Additives. CRC Press 1996, ISBN 0-8493-9416-3
Individual evidence
- ↑ a b c data sheet γ-terpinene (PDF) from Carl Roth , accessed on December 14, 2010.
- ^ The Merck Index . An Encyclopaedia of Chemicals, Drugs and Biologicals . 14th edition, 2006, ISBN 978-0-911910-00-1 , p. 1578.
- ↑ a b c data sheet γ-terpinene from Sigma-Aldrich , accessed on May 14, 2017 ( PDF ).
- ↑ Patent US2006148907
- ↑ a b U.S. Patent 3294550
- ↑ Dr. Duke's Phytochemical Databases: Page no longer available , search in web archives: gamma-Terpinen .