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trifolium_pratense_l [2023/02/08 08:14] andreastrifolium_pratense_l [2024/08/15 08:06] (aktuell) andreas
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 The most abundant volatile compounds in the green sample of red clover were 3-octanol, 6,10,14-trimethyl-2-pentadecanone, benzaldehyde, (Z)-β-caryophyllene, β-farnesene, 3-methyl-1-butanol and 3-octanone. In hay, reductions of the percentages of alcohols, such as 3-methylbutanol and 1-hexanol, of aldehydes and of low boiling point ketones are observed; The sesquiterpene β-farnesene (10%) and the phytol degradation product 6,10,14-trimethyl-2-pentadecanone (12%), together with phenylethyl alcohol and (Z)-β-caryophyllene, were the most abundant compounds detected. In silage, as a result of the fermentation of fresh red clover, esters (ca. 46%) are a more representative class of compounds. The most abundant components were ethyl hexanoate, 3-methylbutyl butanoate, and ethyl-2-methylpentanoate, furthermore phenylethyl alcohol, 3-methyl-1-butanol, and 3-methylbutanoic acid. \\ The most abundant volatile compounds in the green sample of red clover were 3-octanol, 6,10,14-trimethyl-2-pentadecanone, benzaldehyde, (Z)-β-caryophyllene, β-farnesene, 3-methyl-1-butanol and 3-octanone. In hay, reductions of the percentages of alcohols, such as 3-methylbutanol and 1-hexanol, of aldehydes and of low boiling point ketones are observed; The sesquiterpene β-farnesene (10%) and the phytol degradation product 6,10,14-trimethyl-2-pentadecanone (12%), together with phenylethyl alcohol and (Z)-β-caryophyllene, were the most abundant compounds detected. In silage, as a result of the fermentation of fresh red clover, esters (ca. 46%) are a more representative class of compounds. The most abundant components were ethyl hexanoate, 3-methylbutyl butanoate, and ethyl-2-methylpentanoate, furthermore phenylethyl alcohol, 3-methyl-1-butanol, and 3-methylbutanoic acid. \\
 [Volatile composition of red clover (Trifolium pratense L.) forages in Portugal: The influence of ripening stage and ensilage., Figueiredo, R., Rodrigues, A.I., do Céu Costa, M., Food chemistry, 104(4), 2007, 1445-1453] [Volatile composition of red clover (Trifolium pratense L.) forages in Portugal: The influence of ripening stage and ensilage., Figueiredo, R., Rodrigues, A.I., do Céu Costa, M., Food chemistry, 104(4), 2007, 1445-1453]
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 +Main components of the steam distilled pale yellow oil (0.018%) of the fresh plant material were 4-hydroxy-4-methyl-2-pentanone (16.5%), 2-phenylethanol (12.2%), benzylalcohol (11.6%), hexadecanoic aicd (6.2%), 6,10,14-trimethyl pentadecan-2-one (6.1%), phenylacetaldehyde (5.1%), 2-methylbutanol (3.8%), thymol (3.2%), 3-methylbutanol (2.9%), 1-octen-3-ol (2.2%), 1-phenylethanol (1.3%),  benzaldehyde (1.0%), and carvacrol (1.0%). Interesting minor components were e.g. acetophenone (0.2%), furfural (0.3%9, decanal (0.2%), linalool (0.4%), p-vinylguaiacol (trace), eugenol (0.7%), and methyleugenol (0.3%). \\
 +[Tava, Aldo, et al. "Volatile constituents of Trifolium pratense and T. repens from NE Italian alpine pastures." Natural Product Communications 4.6 (2009): 1934578X0900400619]
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 +Main volatile components of the steam distillate of Trifolium pratense L. ssp. nivale (Sieber) Asch. et Gr. plants at the flowering stage were phenylacetaldehyde (13.1%), 1-octen-3-ol (12.5%), 2- and 3-methylbutanol (6.8/8.0%), 2-phenylethanol (7.9%), cis-3-hexenol (5.1%), benzaldehyde (4.5%), hexahydrofarnesylacetone (4.4%), and benzylalcohol (3.1%). \\
 +[Cecotti, Roberto, et al. "Volatile constituents of Trifolium pratense spp. nivale quantified at different growth stages, and evaluation of their antimicrobial activity." Natural product communications 8.11 (2013): 1934578X1300801131]
  
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 Masclef,A., Atlas des plantes de France, vol.2 t.78 (1890) \\ Masclef,A., Atlas des plantes de France, vol.2 t.78 (1890) \\
 [[http://plantgenera.org/species.php?id_species=1032055]] [[http://plantgenera.org/species.php?id_species=1032055]]
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 +{{http://www.botanische-spaziergaenge.at/Bilder/Konica_2/PICT6563.JPG}} \\
 +Trifolium pratense ssp.pratense, Erholungsgebiet Wienerberg Westteil \\ © Rolf Marschner (2006),  
 +[[http://botanische-spaziergaenge.at/viewtopic.php?f=429&t=1414| www.botanische-spaziergaenge.at]]
trifolium_pratense_l.1675844073.txt.gz · Zuletzt geändert: 2023/02/08 08:14 von andreas

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