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--- philadelphus_coronarius_l [2015/06/13 09:39] – Externe Bearbeitung 127.0.0.1
+++ philadelphus_coronarius_l [2024/09/03 07:04] (aktuell) – 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]
+| {{:acetophenone.jpg| acetophenone}} \\ acetophenone | {{:indole.jpg| indole}} \\ indole \\ //(sweet floral)// | {{:2-aminobenzaldehyde.jpg| 2-aminobenzaldehyde}} \\ 2-aminobenzaldehyde \\ //(sweet orange flower)// | {{:myrtenal.png| myrtenal}} \\ myrtenal \\ //(sweet spicy)// | {{:14dihydro2me31benzoxazine.png|1,4-Dihydro-2-methyl-2H-3,1-benzoxazine}} \\ 1,4-dihydro-2-methyl-2H-3,1-benzoxazine \\ //(quinoline-like)// |
+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-benzoxazine (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]
 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. \\
@@ Zeile 17: / Zeile 25: @@
 [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?500}} \\
+{{: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}} \\
+mock orange flowers, [[https://creativecommons.org/licenses/by-sa/3.0/de/|CC BY-SA 3.0]], Author: Andreas Kraska