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convallaria_majalis_l [2017/10/23 16:34]
andreas 		convallaria_majalis_l [2021/05/27 20:13]
andreas
Zeile 7: Zeile 7:
 The fragrant volatiles of Convallaria majalis flowers were enriched by dynamic and vacuum headspace sampling. The products of the vacuum process displayed a more typical odor, maybe due the higher content of farnesol (2-3%) and 2,3-dihydrofarnesol (2%). Main volatiles of the flowers (vacuum) were benzyl alcohol (27-44%) and geraniol (10-17%), together with (E)-ocimene (traces), citronellyl acetate (0.5-3%), (Z)-3-hexenyl acetate (1%), benzyl acetate (1%), phenylacetonitrile (2-4%), phenylacetaldoxime (1-2%), and cinnamic alcohol (3-7%). \\ The fragrant volatiles of Convallaria majalis flowers were enriched by dynamic and vacuum headspace sampling. The products of the vacuum process displayed a more typical odor, maybe due the higher content of farnesol (2-3%) and 2,3-dihydrofarnesol (2%). Main volatiles of the flowers (vacuum) were benzyl alcohol (27-44%) and geraniol (10-17%), together with (E)-ocimene (traces), citronellyl acetate (0.5-3%), (Z)-3-hexenyl acetate (1%), benzyl acetate (1%), phenylacetonitrile (2-4%), phenylacetaldoxime (1-2%), and cinnamic alcohol (3-7%). \\
 [Surburg et al., Volatile compounds from Flowers, in: Teranishi, R.;Buttery, R. G.;Sugisawa, H. Bioactive volatile compounds from plants. (Book) 1993, 169-186]  [Surburg et al., Volatile compounds from Flowers, in: Teranishi, R.;Buttery, R. G.;Sugisawa, H. Bioactive volatile compounds from plants. (Book) 1993, 169-186] 
 +
 +|{{citronellol.jpg| citronellol }} \\ citronellol| {{geraniol.jpg| geraniol }} \\ geraniol| {{e23dihydrofarnesol.jpg| (E)-2,3-dihydrofarnesol}} \\ (E)-2,3-dihydrofarnesol|
  
 "The odorants could be divided into floral-rosy-citrusy notes: citronellol (9.6%), geraniol (8.4%), nerol (1.3%), citronellyl acetate (1.1%), geranyl acetate (3.3%), geranial + benzyl acetate (0.96%), neral (0.02%), benzyl alcohol (35%), phenethyl alcohol (0.78%), phenylacetonitrile (3.0%), farnesol (1.9%) and 2,3-dihydrofarnesol (0.88 %), green-grassy notes: (Z)-3-hexen-1-ol (11%), (Z)-3-hexenyl acetate (7.8%), (Z)-3-hexenal (trace) and (E)-2-hexenal (0.18%), green pea and galbanum-like notes: 2-isopropyl-3-methoxypyrazine (trace) and 2-isobutyl-3-methoxypyrazine (trace), fatty, waxy, aldehydic notes: octanal (0.15%), nonanal (0.1 %), decanal (0.07%) and fruity, raspberry notes: β-ionone (trace)." \\ "The odorants could be divided into floral-rosy-citrusy notes: citronellol (9.6%), geraniol (8.4%), nerol (1.3%), citronellyl acetate (1.1%), geranyl acetate (3.3%), geranial + benzyl acetate (0.96%), neral (0.02%), benzyl alcohol (35%), phenethyl alcohol (0.78%), phenylacetonitrile (3.0%), farnesol (1.9%) and 2,3-dihydrofarnesol (0.88 %), green-grassy notes: (Z)-3-hexen-1-ol (11%), (Z)-3-hexenyl acetate (7.8%), (Z)-3-hexenal (trace) and (E)-2-hexenal (0.18%), green pea and galbanum-like notes: 2-isopropyl-3-methoxypyrazine (trace) and 2-isobutyl-3-methoxypyrazine (trace), fatty, waxy, aldehydic notes: octanal (0.15%), nonanal (0.1 %), decanal (0.07%) and fruity, raspberry notes: β-ionone (trace)." \\
 [[http://www.bojensen.net/EssentialOilsEng/EssentialOils17/EssentialOils17.htm]] \\ [[http://www.bojensen.net/EssentialOilsEng/EssentialOils17/EssentialOils17.htm]] \\
 [New data on trace components with sensory relevance in flower scents, Brunke, E.J., Rittler, F., Schmaus, G., Dragoco Rep., 1, 1996, 5-21] [New data on trace components with sensory relevance in flower scents, Brunke, E.J., Rittler, F., Schmaus, G., Dragoco Rep., 1, 1996, 5-21]
 +
 +„…studies performed at Firmenich also revealed trace amounts of phenylacetaldehyde oxime, which exhibits an interesting muguet-orange flower duality when in pure form. It was proposed that its combination with 2,3-laevo-dihydrofarnesol could reproduce the key note of the flower; however, the instability of this oxime prevents its use on industrial scale.“ \\
 +[Coulomb, J. "Beyond muguet." Perfumer & Flavorist 43.4 (2018): 40-46]
 +
 +Main volatile constituents of a diethyl ether extract of C. majalis flowers from Serbia were benzyl alcohol, citronellol, geranyl acetate, 2,3-dihydrofarnesol, (E)-cinnamyl alcohol, and (E)- and (Z)-isomers of phenylacetaldehyde oxime. \\
 +[Đorđević, Miljana R. "PP94. Lily of the valley flower volatiles: the chemical composition of the flower diethyl ether extract."] \\
 +[[https://core.ac.uk/download/pdf/228560523.pdf]]
  
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convallaria_majalis_l.txt · Zuletzt geändert: 2024/05/22 10:23 von andreas

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