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stephanotis_floribunda_brongn

Stephanotis floribunda Brongn. - syn. Stephanotis jasminoides Schltr.; Marsdenia floribunda (Brongn.) - Apocynaceae
Madagascar jasmine, waxflower, Kranzschlinge

Native vine of Madagascar. „Growing to 6m (20 ft) or more, it is an evergreen woody climber with glossy, leathery oval leaves and clusters of pure white, waxy, intensely fragrant tubular flowers.“ http://en.wikipedia.org/wiki/Stephanotis_floribunda

Diurnal changes of volatiles collected from the headspace of S.floribunda flowers show methyl benzoate (30-80% of total volatiles) and 1-nitro-2-phenylethane (5-45%) are emitted in the night and linalool (up to 15%) mainly during the day. The highly sensitive 2,6-dimethyl-3(E),5(Z),7-octatriene-2-ol and its 5(E) isomer (natural ratio 1:10, sweet floral odor) are present in the headspace of the flowers (evening 2-4%, day 0.1-0.3%).
[Rhythms of fragrance emission in flowers., Matile P., Altenburger R., Planta, 174, 1988, 242-247]
[Trapping, Investigation and Reconstitution of Flower Scents, Roman Kaiser, in: Müller, P.M., and Lamparsky, D. eds. Perfumes: Art, Science and Technology. Springer Science & Business Media, Dordrecht 1994, 213-250]

 methylbenzoate
methylbenzoate
 linalool
linalool
 1-nitro-2-phenylethane
1-nitro-2-phenylethane
 2,6-dimethyl-3(E),5(Z/E),7-octatriene-2-ol
2,6-dimethyl-3(E),5(Z/E),7-octatriene-2-ol

„Stephanotis floribunda (Asclepediaceae), a plant that grows in Madagascar and is now a common house plant, emits a number of volatiles from its flowers. Its floral scent has been noted to increase in intensity during the night. At this time prominent scent compounds include benzyl alcohol, benzyl acetate, benzyl benzoate, eugenol, α-farnesene, linalool, linalool oxide, methyl benzoate (MBA), methyl salicylate (MSA), β-ocimene, phenylethyl alcohol, and 1-nitro-2-phenylethane.“
[Evening specific oscillations of scent emission, SAMT enzyme activity, and SAMT mRNA in flowers of Stephanotis floribunda. Pott, Marcella B., Eran Pichersky, and Birgit Piechulla. Journal of Plant Physiology Vol.159 (8), 2002, 925-934]

The flowery-spicy, cinnamon-like smelling 2-nitroethylbenzene (1-nitro-2-phenylethane) was found in the headspace trappings of Stephanotis floribunda at 27%: „Although it is also somewhat fragrant during the daytime, this most spectacular representative of the Asclepiadaceae starts to emit around twilight a powerful spicy white-floral fragrance based on methyl benzoate, methyl salicylate, isoeugenol, and enormus amounts of 2-nitroethylbenzene.“
[Meaningful Scents around the World, Roman Kaiser, Zürich 2006, 141]

„Methyl benzoate was the dominant component in St. floribunda, accompanied by (E)-ocimene, and benzyalcohol, however, linalool and 1-nitro-2-phenyl ethane were missing from our samples, which were collected in the late afternoon. Both compounds, methyl benzoate and linalool, are commonly reported in the floral odours of moth-adapted plant species… The attractiveness of methyl benzoate and linalool for noctuid moths has been demonstrated in upwind flight experiments in wind-tunnel systems…“
[Jürgens, A., et al. „Floral scent composition in early diverging taxa of Asclepiadoideae, and Secamonoideae (Apocynaceae).“ South African Journal of Botany 76.4 (2010): 749-761] https://www.sciencedirect.com/science/article/pii/S0254629910002152

stephanotis_floribunda.jpg
Loiseleur-Deslongchamps, J.L.A., Herbier général de l’amateur. Deuxième Série, vol.2 t.24 (1839-50)
http://plantgenera.org/species.php?id_species=977937

stephanotis_f.jpg
Stephanotis flowers, CC BY-SA 3.0, Author: Andreas Kraska

stephanotis_floribunda_brongn.txt · Zuletzt geändert: 2019/04/21 14:36 von andreas