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--- stanhopea_tigrina_bateman_ex_lindl [2017/10/21 17:18]
andreas angelegt
+++ stanhopea_tigrina_bateman_ex_lindl [2021/03/20 09:39] (aktuell)
andreas
@@ Zeile 1: / Zeile 1: @@
 Stanhopea tigrina Bateman ex Lindl. - Orchidaceae - tiger-spotted stanhopea, **Getigerte Stanhopea**
-Spectacular epiphytic orchid, endemic to Mexico; flowers in groups of 2–4 in a pendulous inflorescence up to 15 cm long; marked with distinctive purplish-brown streaks and stripes on a yellowish background; heavily scented. \\
+Spectacular epiphytic orchid, endemic to Mexico; flowers in groups of 2-4 in a pendulous inflorescence up to 15 cm long; marked with distinctive purplish-brown streaks and stripes on a yellowish background; heavily scented. \\
 "Pollination is by male euglossine bees (also known as orchid bees), which collect floral fragrance compounds from the lip of the flowers." \\
 [[http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:658613-1]]
-"Its diffusive, 'aromatic-spicy-floral' scent is extremly sweet. One would not expect to conatain more than 90% phenylethyl acetate; in fact, it is difficult even to detect this well-knon substance in the scent... the unusual accord is attributeable to minor constituents accompaning phenylethyl acetate, in particular beta-ionone and derivatives, coumarine, p-hydroxy phenylbutanone (raspberry ketone), and vanillin." \\
+The genus of Stanhopea (occurring throughout much of the Neotropics from northwestern Mexico to southeastern Brazil) was used as a detailed example of the variation and species specificity in floral fragrance composition. Components of the floral fragrance (adsorbed at a Tenax tube and desorbed with microdistillation) of S.tigrina were p-cymene (2.0%), phenylethanol (6.5%), benzyl acetate (1.0%), phenylethyl acetate (69.4%), indole (3.4%), (Z?)-cinnamyl acetate (1.0%), and (E?)-cinnamyl acetate (15.8%). \\
-The accord of raspberry ketone with vanilline and coumarine is extremly heavy and probably unique among orchid scents. \\
+[Williams, Norris H., and W. Mark Whitten. "Orchid floral fragrances and male euglossine bees: methods and advances in the last sesquidecade." The Biological Bulletin 164.3 (1983): 355-395]
+|{{:phenylethylacetate.jpg|2-phenylethyl acetate}} \\ 2-phenylethyl acetate | {{:coumarin.jpg|coumarin}} \\ coumarin | {{:raspberry_ketone.jpg|raspberry ketone}} \\ raspberry ketone | {{:vanillin.jpg| vanillin}} \\ vanillin |
+"Its diffusive, 'aromatic-spicy-floral' scent is extremly sweet. One would not expect to contain more than 90% phenylethyl acetate; in fact, it is difficult even to detect this well-knwon substance in the scent... the unusual accord is attributeable to minor constituents accompaning phenylethyl acetate, in particular β-ionone and derivatives, coumarin, p-hydroxy phenylbutanone (raspberry ketone), and vanillin." \\
+The accord of raspberry ketone with vanilline and coumarin is extremly heavy and probably unique among orchid scents. \\
 [R.Kaiser, The scent of orchids, Basel 1993, 80-81 and 244]
-Main component of the headspace of S.tigrina flowers was phenylethyl acetate (87-93%), minor components were e.g. benzyl acetate (1.4-3.2%), (E)-cinnamyl acetate (0-6.4%), and phenylethyl alcohol (0.7-1.5%). \\
+Main component of the headspace of S.tigrina flowers was phenylethyl acetate (87-93%), minor components were e.g. benzyl acetate (1.4-3.2%), (E)-cinnamyl acetate (0-6.4%), phenylethyl alcohol (0.7-1.5%), methyl salicylate (0.2-1.6%), indole (0-1.4%), and vanillin (0-0.2%). \\
 [Gerlach, Günter. "Stanhopeinae Mesoamericanae, V. El aroma floral de las Stanhopeas de Mexico." Lankesteriana International Journal on Orchidology 9.3 (2009)] [[http://www.redalyc.org/pdf/443/44339819008.pdf]]
@@ Zeile 19: / Zeile 24: @@
+{{:stanhopea_tigrina2012.jpg}} \\
+Stanhopea tigrina
+[[https://creativecommons.org/licenses/by-sa/3.0/de/|CC BY-SA 3.0]], Author: [[https://commons.wikimedia.org/wiki/User:Orchi|Orchi]]  [[https://commons.wikimedia.org/wiki/File:Stanhopea_tigrina_Orchi_2012-07-28_003.jpg|Wikimedia Commons]]

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