| Beide Seiten der vorigen RevisionVorhergehende ÜberarbeitungNächste Überarbeitung | Vorhergehende Überarbeitung |
| cupressus_nootkatensis_d._don [2018/12/31 08:59] – andreas | cupressus_nootkatensis_d._don [2025/06/11 07:33] (aktuell) – andreas |
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| "The essential oil of Alaska cedar heartwood is known to contain compounds which contribute to the remarkable durability of this species. While previous research has identified several compounds, a complete description of this oil, which has a "burnt-grape fruit" odor, has not been undertaken. In this research a profile of the oil is given in which the major components are identified by GC-MS, isolation and spectroscopic techniques. The major components of the steam distilled essential oil were identified as nootkatin, nootkatone, valencene, nootaktene, carvacrol, methyl carvacrol, nootkatol, and eremophil-1(10),11-dien-13-ol. In addition, it was found that the diethyl ether extract of the heartwood contained 1(10)-eremophilen-11,12-epoxide as a major component in addition to the compounds found in the steam distilled essential oil. 1(10)-Eremophilen-11,12-epoxide apparently does not survive the condition of steam distillation. Nootkatol, eremophil-1(10),11-dien-13-ol and 1(10)-eremophilen-11,12-epoxide have not been previously reported in Alaska cedar. Nootkatol is a known compound having been reported in other plants. However, eremophil-1(10),11-dien-13-ol and 1(10)-eremophilen-11,12-epoxide represent new chemical structures to science being described here for the first time." \\ | "The essential oil of Alaska cedar heartwood is known to contain compounds which contribute to the remarkable durability of this species. While previous research has identified several compounds, a complete description of this oil, which has a "burnt-grape fruit" odor, has not been undertaken. In this research a profile of the oil is given in which the major components are identified by GC-MS, isolation and spectroscopic techniques. The major components of the steam distilled essential oil were identified as nootkatin, nootkatone, valencene, nootaktene, carvacrol, methyl carvacrol, nootkatol, and eremophil-1(10),11-dien-13-ol. In addition, it was found that the diethyl ether extract of the heartwood contained 1(10)-eremophilen-11,12-epoxide as a major component in addition to the compounds found in the steam distilled essential oil. 1(10)-Eremophilen-11,12-epoxide apparently does not survive the condition of steam distillation. Nootkatol, eremophil-1(10),11-dien-13-ol and 1(10)-eremophilen-11,12-epoxide have not been previously reported in Alaska cedar. Nootkatol is a known compound having been reported in other plants. However, eremophil-1(10),11-dien-13-ol and 1(10)-eremophilen-11,12-epoxide represent new chemical structures to science being described here for the first time." \\ |
| [Xiong, Yeping. "Essential oil components of Alaska cedar heartwood." (2000)] | [Xiong, Yeping. "Essential oil components of Alaska cedar heartwood." (2000)] |
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| | Of 15 natural products isolated from essential oil components extracted from the heartwood of Chamaecyparis nootkatensis, "...nootkatone from Alaska yellow cedar was the most effective of the eremophilane sesquiterpenes against ticks (LC50 = 0.0029%), whereas the nootkatone grapefruit extract exhibited the greatest biocidal activity against fleas (LC50 = 0.0029%). Mosquitoes were most susceptible to one of the derivatives of valencene, valencene-13-aldehyde (LC50 = 0.0024%), after 24 h. " \\ |
| | [Panella, Nicholas A., et al. "Use of novel compounds for pest control: insecticidal and acaricidal activity of essential oil components from heartwood of Alaska yellow cedar." Journal of medical entomology 42.3 (2005): 352-358] |
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| | Essential oil components extracted from the heartwood of Chamaecyparis nootkatensis were evaluated against nymphal Ixodes scapularis in a laboratory bioassay and compared with N,N-diethyl-3-methylbenzamide (DEET). Nootkatone, valencene-13-ol, nootkatone 1→10 epoxide, and carvacrol had repellent concentration (RC)50 values in the range of DEET. \\ |
| | [Dietrich, Gabrielle, et al. "Repellent activity of fractioned compounds from Chamaecyparis nootkatensis essential oil against nymphal Ixodes scapularis (Acari: Ixodidae)." Journal of medical entomology 43.5 (2006): 957-961] |
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| | {{:carvacrol.jpg| carvacrol }} \\ carvacrol | {{:valencene.jpg| (+)-valencene }} \\ (+)-valencene | {{:nootkatone.jpg| (+)-nootkatone }} \\ (+)-nootkatone | | | {{:carvacrol.jpg| carvacrol }} \\ carvacrol | {{:valencene.jpg| (+)-valencene }} \\ (+)-valencene | {{:nootkatone.jpg| (+)-nootkatone }} \\ (+)-nootkatone | |
| [Cedarwood Alsaka essential oil, Firmenich 967442, 2016] \\ | [Cedarwood Alsaka essential oil, Firmenich 967442, 2016] \\ |
| [[https://www.firmenich.com/uploads/files/ingredients/marketing-sheet/perfumery/CEDARWOOD_ALASKA_EO_967442.pdf]] retrieved 2018-12-31 | [[https://www.firmenich.com/uploads/files/ingredients/marketing-sheet/perfumery/CEDARWOOD_ALASKA_EO_967442.pdf]] retrieved 2018-12-31 |
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| | 'Wood 49 Essential Oil' (Robertet) is a fraction of the essential oil from steam distillation of Alaskan Cypress with woody smoky odor. \\ |
| | [[https://perfumersupplyhouse.com/product/wood-49-essential-oil/]] |
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| {{:cupressus_nootketensis.jpg?700}} \\ | {{:cupressus_nootketensis.jpg?700}} \\ |
| [[http://plantgenera.org/species.php?id_species=1231059]] | [[http://plantgenera.org/species.php?id_species=1231059]] |
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| | {{:callitropsis-nootkatensis-1.jpg}}\\ |
| {{http://www.botanische-spaziergaenge.at/Bilder/Lumix_4/P1250642.JPG}} \\ | Developing seed cones with characteristic horned mucros on Callitropsis nootkatensis on a mature tree at Rossie House, Perthshire, UK. (2024) \\ [[https://www.treesandshrubsonline.org/articles/callitropsis/callitropsis-nootkatensis/|International Dendrological Society]] |
| Cupressus nootkatensis as Chamaecyparis nootkatensis \\ © Rolf Marschner (2010), | Image Tom Christian [[https://creativecommons.org/licenses/by-sa/4.0/|CC BY-SA 4.0]] |
| [[http://botanische-spaziergaenge.at/viewtopic.php?f=29&t=3086| www.botanische-spaziergaenge.at]] | |
