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chrysopogon_zizanioides_l._roberty [2019/08/15 18:06]
andreas
chrysopogon_zizanioides_l._roberty [2021/05/27 09:47] (aktuell)
andreas
Zeile 24: Zeile 24:
 [Meaningful Scents around the World, Roman Kaiser, Zürich 2006, 291-295] [Meaningful Scents around the World, Roman Kaiser, Zürich 2006, 291-295]
  
-|{{:khusimone.jpg|}} \\ khusimone \\ //(vetiver-like, grapefruit, flowery)// | {{:vetivone_alpha.jpg| α-vetivone }} \\ α-vetivone \\ //(vetiver, grapefruit-like, fruity)// | {{:vetivone_beta.jpg| β-vetivone }} \\ β-vetivone \\ //(woody-vetiver or lime-like, hesperidic, rosy, exotic fruit)// |+|{{:khusimone.jpg|}} \\ khusimone \\ //(vetiver-like, grapefruit, flowery)// | {{:vetivone_alpha.jpg| α-vetivone }} \\ α-vetivone (isonootkatone) \\ //(vetiver, grapefruit-like, fruity)// | {{:vetivone_beta.jpg| β-vetivone }} \\ β-vetivone \\ //(woody-vetiver or lime-like, hesperidic, rosy, exotic fruit)// |
  
 "Although it originates in India, vetiver is widely cultivated in the tropical regions around the world. The world’s major producers include Haiti, India, Indonesia’s Java and the French island Réunion. α-Vetivone (CAS# 15764-04-2; (4R,4aS)-4,4a-dimethyl-6-propan-2-ylidene-4,5,7,8-tetrahydro-3H-naphthalen-2-one) has a warm pleasant powerful odor while β-vetivone (CAS# 18444-79-6; (5R,10R)-6,10-dimethyl-2-(1-methyl-ethylidene)-spiro[4.5]dec-6-en-8-one) has a quinolinelike, fruity (cassis, grapefruit) aroma with a woody by-note." \\ "Although it originates in India, vetiver is widely cultivated in the tropical regions around the world. The world’s major producers include Haiti, India, Indonesia’s Java and the French island Réunion. α-Vetivone (CAS# 15764-04-2; (4R,4aS)-4,4a-dimethyl-6-propan-2-ylidene-4,5,7,8-tetrahydro-3H-naphthalen-2-one) has a warm pleasant powerful odor while β-vetivone (CAS# 18444-79-6; (5R,10R)-6,10-dimethyl-2-(1-methyl-ethylidene)-spiro[4.5]dec-6-en-8-one) has a quinolinelike, fruity (cassis, grapefruit) aroma with a woody by-note." \\
Zeile 53: Zeile 53:
 [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]]
  
-{{chrysopogon_zizanoides.jpg?800}} \\+"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." \\ 
 +Main components of vetiveryl acetate preparations were β-vetivenene (~0-1%), ylangen-15-yl acetate (~0-1%), cyclocopacamphan-12-yl acetate A (~1-3%), cyclocopacamphan-12-yl acetate B (~1-3%), khusian-2-yl acetate (~1-2%), ziza-6(13)en-3α-yl acetate (~1-2%), β-funebren-14-yl acetate (~1-2%), β-vetivone (~2-3%), ziza-6(13)en-3β-yl acetate (~1-2%), isokhusimyl acetate (~0-2%), vetiselinenyl acetate (~3-10%), α-vetivone (~1-4%), khusimyl acetate (~11-27%), α-isonootkatyl acetate (~1-7%), and (E)-isovalencenyl acetate (~3-28%). \\ 
 +[Tissandié, Loïc, et al. "Integrated comprehensive two-dimensional gas-chromatographic and spectroscopic characterization of vetiveryl acetates: Molecular identifications, quantification of constituents, regulatory and olfactory considerations." Journal of Chromatography A 1573 (2018): 125-150] 
 + 
 +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] \\ 
 +[[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7986879/]] 
 + 
 +{{chrysopogon_zizanoides.jpg}} \\
 Chrysopogon zizanioides-seeding habit-Kokomo Haiku (2009) \\ Chrysopogon zizanioides-seeding habit-Kokomo Haiku (2009) \\
  [[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]]  [[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.1565885173.txt.gz · Zuletzt geändert: 2019/08/15 18:06 von andreas