Benutzer-Werkzeuge

Webseiten-Werkzeuge


chrysopogon_zizanioides_l._roberty

Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

Link zu dieser Vergleichsansicht

Beide Seiten der vorigen RevisionVorhergehende Überarbeitung
chrysopogon_zizanioides_l._roberty [2021/05/27 07:47] andreaschrysopogon_zizanioides_l._roberty [2026/01/07 17:27] (aktuell) andreas
Zeile 1: Zeile 1:
-Chrysopogon zizanioides (L.) Roberty - syn.Vetiveria zizanioides (L.) Nash; Sorghum zizanioides (L.) Kuntze - Poaceae \\ +Chrysopogon zizanioides (L.) Roberty - syn.Vetiveria zizanioides (L.) Nash; Sorghum zizanioides (L.) Kuntze - Poaceae **Vetiver**
-vetiver, **Vetiver**+
  
 Perennial grass, up to 1.5m high. The name vetiver is derived from the Tamil: வெட்டிவேர் vettiver. \\ Perennial grass, up to 1.5m high. The name vetiver is derived from the Tamil: வெட்டிவேர் vettiver. \\
 "Vetiver is most closely related to Sorghum but shares many morphological characteristics with other fragrant grasses, such as lemongrass (Cymbopogon citratus), citronella (Cymbopogon nardus, C. winterianus), and palmarosa (Cymbopogon martinii). Though it originates in India, vetiver is widely cultivated in the tropical regions of the world. The world's major producers include Haiti, India, Java, and Réunion...\\ "Vetiver is most closely related to Sorghum but shares many morphological characteristics with other fragrant grasses, such as lemongrass (Cymbopogon citratus), citronella (Cymbopogon nardus, C. winterianus), and palmarosa (Cymbopogon martinii). Though it originates in India, vetiver is widely cultivated in the tropical regions of the world. The world's major producers include Haiti, India, Java, and Réunion...\\
-Vetiver is mainly cultivated for the fragrant essential oil distilled from its roots. In perfumery, the older French spelling, vetyver, is often used... Due to its excellent fixative properties, vetiver is used widely in perfumes. It is contained in 90% of all western perfumes." [[http://en.wikipedia.org/wiki/Chrysopogon_zizanioides]]+Vetiver is mainly cultivated for the fragrant essential oil distilled from its roots. In perfumery, the older French spelling, vetyver, is often used... Due to its excellent fixative properties, vetiver is used widely in perfumes. It is contained in 90% of all western perfumes." [[http://en.wikipedia.org/wiki/Chrysopogon_zizanioides|wikipedia]]
  
-"This species (Vetiver Grass) is said to have originated in India, but is now distributed throughout warm parts of the Old World and introduced into the S United States and West Indies. It has long been cultivated for the oil extracted from the aromatic roots, which is used in perfumery. More recently, its potential as a soil binder to prevent erosion has been recognized. It is planted in hedges for this purpose, particularly along the contours of sloping ground. The deep, non-invasive root system holds the plants firm, while the stiff, dense leaves trap soil and prevent it being washed away. It is also used as a forage grass." [[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=242312768]]+"This species (Vetiver Grass) is said to have originated in India, but is now distributed throughout warm parts of the Old World and introduced into the S United States and West Indies. It has long been cultivated for the oil extracted from the aromatic roots, which is used in perfumery. More recently, its potential as a soil binder to prevent erosion has been recognized. It is planted in hedges for this purpose, particularly along the contours of sloping ground. The deep, non-invasive root system holds the plants firm, while the stiff, dense leaves trap soil and prevent it being washed away. It is also used as a forage grass." [[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=242312768|efloras.org]]
  
 "The odour of vetiver oil is very complex, strong, warm-balsamic-woody with sandalwood, cedarwood, ambery, "The odour of vetiver oil is very complex, strong, warm-balsamic-woody with sandalwood, cedarwood, ambery,
Zeile 51: Zeile 50:
  
 "The characterization of the odour-active constituents of VEO [vetiver essential oil] is another example of a task that is particularly difficult when dealing with such complex materials. It obviously should be based on as complete as possible knowledge of the chemical composition, but it is also necessary that the sensorial analyses use samples of constituents at their highest state of olfactory purity. A good example of the difficulty of these determinations is furnished inter alia by the odorant activity of vetiselinenol. The Weyerstahl studies on essential oils are undoubtedly the most extensive analytical investigations ever conducted on complex oils, but despite his efforts to characterize the structures and the odour of many of VEO constituents, he attributed a ‘Woody, vetiver, cedar, ambra-like’ note to this ‘strong smelling component’ and reported that, with khusimol and (E)-isovalencol, it was ‘responsible for the base note’. When a high-resolution approach such as GC-O was used, vetiselenenol proved to be odourless for all of the panelists, and khusimol had apparently a much lower olfactory contribution to the whole oil than many other constituents, such as ziza-6(13)-ene-3-one and 2-epi-ziza-6(13)-ene-3-one." \\ "The characterization of the odour-active constituents of VEO [vetiver essential oil] is another example of a task that is particularly difficult when dealing with such complex materials. It obviously should be based on as complete as possible knowledge of the chemical composition, but it is also necessary that the sensorial analyses use samples of constituents at their highest state of olfactory purity. A good example of the difficulty of these determinations is furnished inter alia by the odorant activity of vetiselinenol. The Weyerstahl studies on essential oils are undoubtedly the most extensive analytical investigations ever conducted on complex oils, but despite his efforts to characterize the structures and the odour of many of VEO constituents, he attributed a ‘Woody, vetiver, cedar, ambra-like’ note to this ‘strong smelling component’ and reported that, with khusimol and (E)-isovalencol, it was ‘responsible for the base note’. When a high-resolution approach such as GC-O was used, vetiselenenol proved to be odourless for all of the panelists, and khusimol had apparently a much lower olfactory contribution to the whole oil than many other constituents, such as ziza-6(13)-ene-3-one and 2-epi-ziza-6(13)-ene-3-one." \\
-[Volatile constituents of vetiver: a review., Belhassen, E., Filippi, J.J., Brévard, H., Joulain, D., Baldovini, N., Flavour and Fragrance Journal, 30(1), 2015, 26-82] [[http://onlinelibrary.wiley.com/doi/10.1002/ffj.3227/pdf]]+[Volatile constituents of vetiver: a review., Belhassen, E., Filippi, J.J., Brévard, H., Joulain, D., Baldovini, N., Flavour and Fragrance Journal, 30(1), 2015, 26-82] [[http://onlinelibrary.wiley.com/doi/10.1002/ffj.3227/pdf|PDF]]
  
 "The manufacture of vetiveryl acetate modulates the initial scent of vetiver essential oil by suppressing the notes brought by the main fragrant alcohols. While the impact of undesired odorant molecules such as phenol derivatives and geosmin is lowered, the major odour-active ketones such as khusimone, ziza-6(13)-en-3-ones, and the two vetivones develop their own odor characters in vetiveryl acetate." \\ "The manufacture of vetiveryl acetate modulates the initial scent of vetiver essential oil by suppressing the notes brought by the main fragrant alcohols. While the impact of undesired odorant molecules such as phenol derivatives and geosmin is lowered, the major odour-active ketones such as khusimone, ziza-6(13)-en-3-ones, and the two vetivones develop their own odor characters in vetiveryl acetate." \\
Zeile 58: Zeile 57:
  
 The citrusy grapefruit character of vetiver oil originates from α-vetivone, β-vetivone, and nootkatone, earthy aspects are due to geosmine and nor-acorenone, and the creamy santal character mainly results from (E)-isovalencenol. The typical transparent woody-ambery character of vetiver is contributed by ziza-6(13)en-3-one (th 0.13 ng/L air) and 2-epi-ziza-6(13)en-3-one (th 0.029 ng/L air), now proved by synthesis of all (1R)-configured ziza-6(13)-en-3-one stereoisomers. \\ The citrusy grapefruit character of vetiver oil originates from α-vetivone, β-vetivone, and nootkatone, earthy aspects are due to geosmine and nor-acorenone, and the creamy santal character mainly results from (E)-isovalencenol. The typical transparent woody-ambery character of vetiver is contributed by ziza-6(13)en-3-one (th 0.13 ng/L air) and 2-epi-ziza-6(13)en-3-one (th 0.029 ng/L air), now proved by synthesis of all (1R)-configured ziza-6(13)-en-3-one stereoisomers. \\
-[Ouyang, Jie, et al. "The Smelling Principle of Vetiver Oil, Unveiled by Chemical Synthesis." Angewandte Chemie (International Ed. in English) 60.11 (2021): 5666] \\ +[Ouyang, Jie, et al. "The Smelling Principle of Vetiver Oil, Unveiled by Chemical Synthesis." Angewandte Chemie (International Ed. in English) 60.11 (2021): 5666] [[https://pmc.ncbi.nlm.nih.gov/articles/PMC7986879/pdf/ANIE-60-5666.pdf|PDF]]
-[[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7986879/]]+
  
 {{chrysopogon_zizanoides.jpg}} \\ {{chrysopogon_zizanoides.jpg}} \\
-Chrysopogon zizanioides-seeding habit-Kokomo Haiku (2009) \\ +Chrysopogon zizanioides-seeding habit-Kokomo Haiku © Forest and Kim Starr (2009) [[https://commons.wikimedia.org/wiki/File:Chrysopogon_zizanioides-seeding_habit-Kokomo_Haiku.jpg|Wikimedia Commons]] [[https://creativecommons.org/licenses/by/2.0/deed.en|CC BY-SA 2.0]]
- [[https://commons.wikimedia.org/wiki/File:Chrysopogon_zizanioides-seeding_habit-Kokomo_Haiku.jpg|Wikimedia Commons]], Author: Forest and Kim Starr  [[https://creativecommons.org/licenses/by/2.0/deed.en|CC BY-SA 2.0]]+
chrysopogon_zizanioides_l._roberty.txt · Zuletzt geändert: 2026/01/07 17:27 von andreas

Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki