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--- philadelphus_coronarius_l [2015/05/26 23:25]
andreas
+++ philadelphus_coronarius_l [2021/03/16 10:36]
andreas
@@ Zeile 8: / Zeile 8: @@
 The pre-female //'nectar producing disk flowers'// are pleasantly fragrant, especially in the evening and then particularly intense. [[http://de.wikipedia.org/wiki/Philadelphus_coronarius]]
-Trans-myrtanal (46%), cis-myrtanal (2.2%), myrtenal, myrtenol, indole, nopinone (5.3%), 2-aminobenzaldehyde, 2-formamidobenzaldehyde and veratraldehyde have been determined in the headspace of living flowers by GC-MS analysis. Flowers from another single plant showed an entirely different composition with hugh amounts of acetophenone (20%) and indole (10%). \\
+Major constituents of the vacuum headspace concentrate of the flower volatiles were acetophenone (20%), linalool oxides (11.5%), and indole (10%). Among the minor constituents were 2-aminobenzaldehyde (2%), benzothiazole (1%), jasmone (trace), and (Z)-hexenyl benzoate (trace). \\
+[Joulain, D. „Study of the fragrance given off by certain springtime flowers.“ Progress in essential oil research (1986): 57-67]
+Trans-myrtanal (46%), cis-myrtanal (2.2%), myrtenal, myrtenol, indole, nopinone (5.3%), 2-aminobenzaldehyde (11%), 2-formamidobenzaldehyde and veratraldehyde have been determined in the headspace of living flowers by GC-MS analysis. Flowers from another single plant showed an entirely different composition with hugh amounts of acetophenone (20%) and indole (10%). \\
 [The composition of the headspace from fragrant flowers: Further results., Joulain D., Flavour and Fragrance J 1987; 2: 149-155]
+,4-Dihydro-2-methyl-2H-3,1-bezoxazine (odor: quinoline-like) as the cyclic product of anthranilic alcohol and acetaldehyde is found in the vacuum headspace concentrate of a P.coronarius flowers variety in amounts of 0.2-1%. In pure form it cleaves acetaldehyde in perceptible amounts. \\
+[Volatile constituents of European bird cherry flowers (Padus avium Mill.). Surburg, H., Güntert, M., Schwarze, B.,Journal of Essential Oil Research, Vol.2(6), 1990, 307-316]
+| {{:indole.jpg| indole}} \\ indole | {{:2-aminobenzaldehyde.jpg| 2-aminobenzaldehyde}} \\ 2-aminobenzaldehyde |
 Feeding experiments with 13C- and fluorine-labelled precursors revealed that the biosynthesis of 2-aminobenzaldehyde in flowers of Robinia pseudoacacia and Philadelphus coronarius is realized by transformation of anthranilic acid to indole followed by oxidative ring opening and hydrolysis of the resulting N-formyl-2-aminobenzaldehyde. \\
 [Biosynthesis of 2-aminobenzaldehyde in flowers of Robinia pseudoacacia and Philadelphus coronarius., Spiteller, P., Steglich, W., Phytochemistry, Vol.57(3), 2001, 361-363]
-{{:philadelphus_cor_curtis.jpg?500}} \\
+"The volatile constituents of both dried and fresh leaves, twigs and flowers of Philadelphus coronarius L. (Hydrangeaceae) were isolated by hydrodistillation and analyzed by GC/FID and GC/MS. There were major differences between the various oils. For example, epi-13-manool (47.6 %) was the major component of the fresh flower oil, but was not detected in the dried fower oil, whereas isolongifolol (15.5%), 2-nonanol (11.1%) and 7-hydroxycoumarin (9.7%) were the principal components of the dried flower oil. In the oils of both the fresh and dried leaves the major constituent was (E,E)-farnesol, although the proportion of this compound in the fresh leaf oil was considerably higher (37.3%) than that of the dried leaf oil (3.2%). (E,E)-farnesol was also the major component of the fresh twig oil (16.6%), but was absent from the dried twig oil, the major constituent of which was (E,E)-2,4-decadienal (2.4%); however, this was not detected in the fresh twig oil." \\
+[Identification of the components of Philadelphus coronarius L. essential oil., Czigle, Szilvia, et al., Journal of Essential Oil Research, Vol.18(4), 2006, 423-426]
+{{:philadelphus_cor_curtis.jpg?600}} \\
 Botanical Magazine, Vol.11, t.391 (1797) \\
 [[http://plantgenera.org/species.php?id_species=777547]]
-{{:dsc01093k.jpg?600|}}
+{{:dsc01093k.jpg?800|}} \\
+mock orange flowers, [[https://creativecommons.org/licenses/by-sa/3.0/de/|CC BY-SA 3.0]], Author: Andreas Kraska

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