| Beide Seiten der vorigen Revision
Vorhergehende Überarbeitung
|
|
ferula_gummosa_boiss [2017/07/04 10:26]
andreas |
ferula_gummosa_boiss [2021/03/31 22:55] (aktuell)
andreas |
| [Ferula gummosa: Phytochemical variability in Iran. Michael Thomsen, Mathias Schmidt , Georges Betti, Hervé Casabianca, Reza Omidbai. Poster from the International Congress on Natural Products Research, Phoenix (USA), July 31 - August 4, 2004] {{:posterferulagumosa.pdf|}} \\ | [Ferula gummosa: Phytochemical variability in Iran. Michael Thomsen, Mathias Schmidt , Georges Betti, Hervé Casabianca, Reza Omidbai. Poster from the International Congress on Natural Products Research, Phoenix (USA), July 31 - August 4, 2004] {{:posterferulagumosa.pdf|}} \\ |
| |
| {{:3e5zundecatrien.jpg}} (E,Z)-1,3,5-undecatriene (intense galbanum odor) | {{:3e5zundecatrien.jpg}} (E,Z)-1,3,5-undecatriene = (3E,5Z)-galbanolene (intense green galbanum odor) |
| |
| "A total of 22 components have been identified in the (essential) oil, representing 97.1% of the total oil. The main group was monoterpene hydrocarbons (88.4%) including sabinene (40.1%), α-pinene (14.3%), and β-pinene (14.1%). Moreover the other main components of this oil were p-cymene (8.5%) and α-thujene (8.1%). The oil contained a lower percentage of limonene (2.2%), terpinene-4-ol (1.5%), myrtenal (1.3%) and γ-terpinene (1.1%)." \\ | "A total of 22 components have been identified in the (essential) oil, representing 97.1% of the total oil. The main group was monoterpene hydrocarbons (88.4%) including sabinene (40.1%), α-pinene (14.3%), and β-pinene (14.1%). Moreover the other main components of this oil were p-cymene (8.5%) and α-thujene (8.1%). The oil contained a lower percentage of limonene (2.2%), terpinene-4-ol (1.5%), myrtenal (1.3%) and γ-terpinene (1.1%)." \\ |
| "Galbanum oil is composed of monoterpenes in large amounts and pyrazines in small amounts. Although the monoterpenes are the main components of galbanum oil, they hardly contribute to the distinct galbanum aroma. The scanty amounts of pyrazines, in contrast, contribute significantly to the aroma. Considering the complexity and potency of the odor, the essential oil was assumed to contain so far not identified compounds with high odor contribution. By the gas chromatography-mass spectrometry-olfactometry (GC-MS-O) analysis of galbanum oil, fruity-green-balsamic notes were detected at two different retention times. The mass spectra (MS) of the newly discovered notes were elucidated by conducting multidimensional (MD) GC-MS-O. By analyzing the MS data, six chemical structures were proposed: (6E/Z,8E)-undeca-6,8,10-trien-2-one, (6E/Z,8E)-undeca-6,8,10-trien-3-one, and (6E/Z,8E)-undeca-6,8,10-trien-4-one. The compounds were then synthesized in an attempt to match the MS, retention indices (RI), and odor qualities. The MD-GC-MS-O analyses of the candidate compounds led to the identification of the novel key aroma compounds (6Z,8E)-undeca-6,8,10-trien-3-one and (6Z,8E)-undeca-6,8,10-trien-4-one in galbanum oil." \\ | "Galbanum oil is composed of monoterpenes in large amounts and pyrazines in small amounts. Although the monoterpenes are the main components of galbanum oil, they hardly contribute to the distinct galbanum aroma. The scanty amounts of pyrazines, in contrast, contribute significantly to the aroma. Considering the complexity and potency of the odor, the essential oil was assumed to contain so far not identified compounds with high odor contribution. By the gas chromatography-mass spectrometry-olfactometry (GC-MS-O) analysis of galbanum oil, fruity-green-balsamic notes were detected at two different retention times. The mass spectra (MS) of the newly discovered notes were elucidated by conducting multidimensional (MD) GC-MS-O. By analyzing the MS data, six chemical structures were proposed: (6E/Z,8E)-undeca-6,8,10-trien-2-one, (6E/Z,8E)-undeca-6,8,10-trien-3-one, and (6E/Z,8E)-undeca-6,8,10-trien-4-one. The compounds were then synthesized in an attempt to match the MS, retention indices (RI), and odor qualities. The MD-GC-MS-O analyses of the candidate compounds led to the identification of the novel key aroma compounds (6Z,8E)-undeca-6,8,10-trien-3-one and (6Z,8E)-undeca-6,8,10-trien-4-one in galbanum oil." \\ |
| |
| | {{:undeca-6_8_10-trien-3-one_6z8e.jpg|}} \\ (6Z,8E)-Undeca-6,8,10-trien-3-one \\ ([[http://www.thegoodscentscompany.com/data/rw1603311.html|yuzunone]]) | {{:undeca-6_8_10-trien-4-one_6z8e.jpg|}} \\ (6Z,8E)-Undeca-6,8,10-trien-4-one | | | {{:undeca-6_8_10-trien-3-one_6z8e.jpg|}} \\ (6Z,8E)-Undeca-6,8,10-trien-3-one \\ ([[http://www.thegoodscentscompany.com/data/rw1603311.html|yuzunone]]) | {{:undeca-6_8_10-trien-4-one_6z8e.jpg|}} \\ (6Z,8E)-Undeca-6,8,10-trien-4-one | {{:2-isobutyl-3-methoxypyrazine.jpg|}} \\ 2-isobutyl-3-methoxypyrazine | |
| |
| (6Z,8E)-Undeca-6,8,10-trien-3-one and (6Z,8E)-undeca-6,8,10-trien-4-one have fairly low thresholds in water of 0.010 ppb and 0.072 ppb respectively. These compounds are key aroma compounds (fruity green balsamic) in galbanum oil. \\ | (6Z,8E)-Undeca-6,8,10-trien-3-one and (6Z,8E)-undeca-6,8,10-trien-4-one have fairly low thresholds in water of 0.010 ppb and 0.072 ppb respectively. These compounds are key aroma compounds (fruity green balsamic) in galbanum oil. \\ |
| [Scent and Chemistry, Günther Ohloff, Wilhelm Pickenhagen, Philip Kraft, Wiley-VCH, 2012, 307-309] | [Scent and Chemistry, Günther Ohloff, Wilhelm Pickenhagen, Philip Kraft, Wiley-VCH, 2012, 307-309] |
| |
| {{:ferula_gummosa.jpg?500}} \\ | {{:ferula_gummosa.jpg?600}} \\ |
| Ferula gummosa as Ferula galbaniflua \\ | Ferula gummosa as Ferula galbaniflua \\ |
| Köhler, F.E., Medizinal Pflanzen, vol.2 t.153 (1890) \\ | Köhler, F.E., Medizinal Pflanzen, vol.2 t.153 (1890) \\ |
| [[http://plantgenera.org/species.php?id_species=432398]] | [[http://plantgenera.org/species.php?id_species=432398]] |
