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anthoxanthum_odoratum_l [2017/10/14 11:00]
andreas
anthoxanthum_odoratum_l [2019/03/21 13:33] (aktuell)
andreas
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 Anthoxanthum odoratum L. - Poaceae - sweet vernalgrass,​ scented vernal grass, flouve odorante (fr.), **Gewöhnliches Ruchgras** Anthoxanthum odoratum L. - Poaceae - sweet vernalgrass,​ scented vernal grass, flouve odorante (fr.), **Gewöhnliches Ruchgras**
  
-Perennial grass, up to 60cm high, native to Europe, West Asia, naturalozed ​in Africa; leaves flat, up to 12cm long, glabrous or loosely pilose, smooth or scabrid, apex acuminate; panicle dense, spikelike, lanceolate; glumes unequal, pubescent or punctiform-scabrid,​ margins sometimes ciliate, lower glume ca. 1/2 length of upper glume; lower florets sterile, composed only of lemmas, first lemma awned from near middle; second lemma awned near base, awn geniculate; bisexual floret 2-3 mm, smooth, shiny, ​ palea 1-veined; anthers 3-4.5mm. ​ \\+Perennial grass, up to 60cm high, native to Europe, West Asia, naturalized ​in Africa; leaves flat, up to 12cm long, glabrous or loosely pilose, smooth or scabrid, apex acuminate; panicle dense, spikelike, lanceolate; glumes unequal, pubescent or punctiform-scabrid,​ margins sometimes ciliate, lower glume ca. 1/2 length of upper glume; lower florets sterile, composed only of lemmas, first lemma awned from near middle; second lemma awned near base, awn geniculate; bisexual floret 2-3 mm, smooth, shiny, ​ palea 1-veined; anthers 3-4.5mm. ​ \\
 [[http://​www.efloras.org/​florataxon.aspx?​flora_id=2&​taxon_id=200024834]] [[http://​www.efloras.org/​florataxon.aspx?​flora_id=2&​taxon_id=200024834]]
  
 The perfumery ingredient '​Flouve absolute'​ (with herbal coumarin scent, CAS 89957-44-8) is obtained by extraction from A.odoratum. The perfumery ingredient '​Flouve absolute'​ (with herbal coumarin scent, CAS 89957-44-8) is obtained by extraction from A.odoratum.
 +
 +"​Flouve absolute is a viscous, greenish-amber to brownish-yellow liquid, having a very sweet, herbaceous, tobacco-like and coumarinic odor. The odor is so rich and so complex that one can keep on finding notes in it. However, the overall fragrance is sweet, licorice-like,​ root-like, somewhat mossy-herbaceous like wet underforest and meadows, of exceptional tenacity and high penetrating power. ​
 +[Arctander, Steffen. Perfume and flavor materials of natural origin. 1960, 185; reprint Arctander, Steffen. Perfume and flavor materials of natural origin. Lulu. com, 2017, 158-162 (orig.250-253)] ​
  
 {{:​coumarin.jpg|}} coumarin {{:​coumarin.jpg|}} coumarin
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 The major volatile component (steam distillation) of the oil from fresh leaves (96.3%) and hay (46.8%) was coumarin. A.odoratum hay oil also contained alcohols like amyl alcohol (0.1%), (Z)-3-hexenol (0.1%), heptanol (0.1%), octanol (3%), (Z)-2-octenol (0.1%), and borneol (0.1%); (Z)-3-hexenyl acetate (0.1%); furthermore 4-vinylguaiacol (1.9%) and its methyl ether (0.3%); aldehydes like valeraldehyde (0.6%), hexanal (0.3%), octanal (0.1%), nonanal (0.3%), (E)-2-decenal (0.1%), benzaldehyde (0.1%), phenylacetaldehyde (0.1%), and veratraldehyde (0.2%). The hay oil was treated with diazomethane,​ so acids could be quantified as their methyl esters like methyl butyrate (0.7%), methyl valerate (0.3%), methyl hexanoate (0.6%), methyl octanoate (0.9%), methyl nonanoate (1.0%), methyl decanoate (0.3%), methyl dodecanoate (1.3%), methyl tetradecanoate (1.3%), methyl hexadecanoate (9.9%), methyl linolenate (3%) e.g.\\ The major volatile component (steam distillation) of the oil from fresh leaves (96.3%) and hay (46.8%) was coumarin. A.odoratum hay oil also contained alcohols like amyl alcohol (0.1%), (Z)-3-hexenol (0.1%), heptanol (0.1%), octanol (3%), (Z)-2-octenol (0.1%), and borneol (0.1%); (Z)-3-hexenyl acetate (0.1%); furthermore 4-vinylguaiacol (1.9%) and its methyl ether (0.3%); aldehydes like valeraldehyde (0.6%), hexanal (0.3%), octanal (0.1%), nonanal (0.3%), (E)-2-decenal (0.1%), benzaldehyde (0.1%), phenylacetaldehyde (0.1%), and veratraldehyde (0.2%). The hay oil was treated with diazomethane,​ so acids could be quantified as their methyl esters like methyl butyrate (0.7%), methyl valerate (0.3%), methyl hexanoate (0.6%), methyl octanoate (0.9%), methyl nonanoate (1.0%), methyl decanoate (0.3%), methyl dodecanoate (1.3%), methyl tetradecanoate (1.3%), methyl hexadecanoate (9.9%), methyl linolenate (3%) e.g.\\
 [Coumarin-containing grass: volatiles from sweet vernalgrass (Anthoxanthum odoratum L.)., Tava, A., Journal of Essential Oil Research, Vol.13(5), 2001, 367-370] [Coumarin-containing grass: volatiles from sweet vernalgrass (Anthoxanthum odoratum L.)., Tava, A., Journal of Essential Oil Research, Vol.13(5), 2001, 367-370]
 +
 +Coumarin showed also the major GC peak area in 14.7% of all investigated hay samples form the Alps (multi-species products), occuring together in every sample with phenylethanol,​ 6-methyl-5-hepten-2-one,​ p-cymene, Δ3-carene, linalool, β-ionone, and γ-muurolene. \\
 +[Valtiner, S. M., G. K. Bonn, and C. W. Huck. "​Characterisation of different types of hay by solid‐phase micro‐extraction–gas chromatography mass spectrometry and multivariate data analysis."​ Phytochemical analysis 19.4 (2008): 359-367]
  
 {{:​anthoxanthum_odoratum.jpg?​500}} \\ {{:​anthoxanthum_odoratum.jpg?​500}} \\
anthoxanthum_odoratum_l.1507971657.txt.gz · Zuletzt geändert: 2017/10/14 11:00 von andreas