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nigritella_nigra_l._rchb._f [2016/12/20 08:35] andreasnigritella_nigra_l._rchb._f [2018/06/07 10:14] (aktuell) andreas
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 Nigritella nigra (L.) Rchb. f. - syn. Gymnadenia nigra (L.) Rchb.f. - Orchidaceae \\ Nigritella nigra (L.) Rchb. f. - syn. Gymnadenia nigra (L.) Rchb.f. - Orchidaceae \\
-Vanilla orchif, **Schwarzes Kohlröschen**, Schwarzes Männertreu, Bränderli+Black Vanilla orchid, **Schwarzes Kohlröschen**, Schwarzes Männertreu, Bränderli
  
-Endangered perennial, up to 15cm high, very rare, native to Europe, especially the Alps, Norway and Sweden (province flower of Jämtland); leaves linear, grass-like; flowers black-purple (sometimes also pinkish, white or pale yellow), very fragrant.+Endangered perennial, up to 15cm high, very rare, native to Europe, especially to the Alps, Norway and Sweden (province flower of Jämtland); leaves linear, grass-like; flowers black-purple (sometimes also pinkish, white or pale yellow), very fragrant.
  
 The unique spicy floral scent strongly reminescent of vanilla and cocoa is especially based on 2-phenylethanol (42.5%), 2-phenylacetaldehyde (9.0%), vanillin (0.1%), benzyl isovalerate (0.2%), 2-phenylethyl isovalerate (0.1%), methyl nicotinate (1.0%), eugenol (0.1%), (E)-geranylacetone (1.3%), 2-phenylethyl formate [?], and methyl benzoate (0.5%). \\ The unique spicy floral scent strongly reminescent of vanilla and cocoa is especially based on 2-phenylethanol (42.5%), 2-phenylacetaldehyde (9.0%), vanillin (0.1%), benzyl isovalerate (0.2%), 2-phenylethyl isovalerate (0.1%), methyl nicotinate (1.0%), eugenol (0.1%), (E)-geranylacetone (1.3%), 2-phenylethyl formate [?], and methyl benzoate (0.5%). \\
 [Scent of a vanishing flora, Roman Kaiser, 2011, 191 and 389]  [Scent of a vanishing flora, Roman Kaiser, 2011, 191 and 389] 
 +
 +|{{:phenylethanol.jpg| 2-phenylethanol}} \\ 2-phenylethanol | {{:phenylacetaldehyde.jpg|phenylacetaldehyde}} \\ phenylacetaldehyde \\ //(green-floral, honey)// | {{:benzylisovalerate.png|benzyl isovalerate}} \\ benzyl isovalerate \\ //(sweet fruity)// |{{:eugenol.jpg|eugenol}} \\ eugenol \\ //(clove-like)// | {{:vanillin.jpg| vanillin}} \\ vanillin |
  
 The volatile fraction of the inflorescences of Nigritella nigra isolated by steam distillation (0.9% f.w.) contained mainly benzyl alcohol (28.9%) and 2-phenylethanol (10.4%). Other important constituents were phenylacetaldehyde (8.1%), heptanal (7.0%), isovaleric acid (3.2%), tricosane (4.7%), pentacosane (4.8%), and heptacosane (2.3%). Vanillin was present at 0.8%. \\ The volatile fraction of the inflorescences of Nigritella nigra isolated by steam distillation (0.9% f.w.) contained mainly benzyl alcohol (28.9%) and 2-phenylethanol (10.4%). Other important constituents were phenylacetaldehyde (8.1%), heptanal (7.0%), isovaleric acid (3.2%), tricosane (4.7%), pentacosane (4.8%), and heptacosane (2.3%). Vanillin was present at 0.8%. \\
nigritella_nigra_l._rchb._f.1482222910.txt.gz · Zuletzt geändert: 2016/12/20 08:35 von andreas

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