Tinkturenpresse

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Dorstenia turnerifolia Fisch. & C.A.Mey. - syn.: Dorstenia argentata Hook. f. -  Moraceae 

Herb or subhrub, native to eastern Brazil. \\
[[https://www.gbif.org/species/3762794]] \\
[[http://legacy.tropicos.org/Name/21300161?tab=distribution]]

"The most striking characteristic of Dorstenia is their reproductive structure, called pseudanthium (Greek for "false flower") or in Moraceae hypanthium, which is composed of clusters of tiny unisexual flowers on a disc- or cup-shaped receptacle that are often adorned with bracts of various sizes and shapes." \\
[[https://en.wikipedia.org/wiki/Dorstenia]]

| {{geosmin.jpg}} \\ (-)geosmin| {{:dehydrogeosmin.jpg|dehydrogeosmin}} \\ (+)-dehydrogeosmin| (+)-dehydrogeosmin

Main componets of the flower scent are the (E/Z)-7-methyl-1,6-dioxaspiro-[4.5]decanes (30%). Olfactorily the scent is dominated by (-)-geosmin (0.2%) accompanied by dehydrogeosmin (0.01%). Together with fruit esters like methyl butyrate (20%), 2-methylbutyl butyrate (5.9%), 2-butyl butyrate (4.8%), and hexyl butyrate (1.2%), an extremely unusual musty-fruity scent is created. \\
[Kaiser, Roman. „Scents from rain forests.“ CHIMIA International Journal for Chemistry 54.6 (2000): 346-363] 


{{dorstenia_turnerifolia.jpg}} \\
Dorstenia turnerifolia (2007)
[[https://creativecommons.org/licenses/by-sa/3.0/de/|CC BY-SA 3.0]], Author: RI   [[https://commons.wikimedia.org/wiki/File:2007_dorstenia_turnerifolia_2.jpg|Wikimedia Commons]]

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