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brassica_napus_l [2019/02/03 15:37]
andreas |
brassica_napus_l [2022/05/02 12:09] (aktuell)
andreas |
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| Aroma extract dilution analysis (AEDA) of the volatile fraction isolated from unifloral rape honey showed 28 odor-active compounds. "The highest FD factors were found for (E)-β-damascenone (cooked apple-like), phenylacetic acid (honey-like), 4-methoxybenzaldehyde (aniseed-like), 3-phenylpropanoic acid (flowery, waxy), and 2-methoxy-4-vinylphenol (clove-like)... The highest OAVs were calculated for (E)-β-damascenone, 3-phenylpropanoic acid, phenylacetic acid, dimethyl trisulfide, and phenylacetaldehyde... A model mixture containing the 12 odorants showing an OAV ≥ 1 at the same concentrations as they occurred in the rape honey was able to mimick the aroma impression of the original honey. The characterization of the key odorants in rape flowers from the same field suggested 3-phenylpropanoic acid, phenylacetic acid, and three further odorants to be transferred via the bees into the honey." \\ | Aroma extract dilution analysis (AEDA) of the volatile fraction isolated from unifloral rape honey showed 28 odor-active compounds. "The highest FD factors were found for (E)-β-damascenone (cooked apple-like), phenylacetic acid (honey-like), 4-methoxybenzaldehyde (aniseed-like), 3-phenylpropanoic acid (flowery, waxy), and 2-methoxy-4-vinylphenol (clove-like)... The highest OAVs were calculated for (E)-β-damascenone, 3-phenylpropanoic acid, phenylacetic acid, dimethyl trisulfide, and phenylacetaldehyde... A model mixture containing the 12 odorants showing an OAV ≥ 1 at the same concentrations as they occurred in the rape honey was able to mimick the aroma impression of the original honey. The characterization of the key odorants in rape flowers from the same field suggested 3-phenylpropanoic acid, phenylacetic acid, and three further odorants to be transferred via the bees into the honey." \\ |
| | Most important odor-active compounds of the flowers itself were (FD factors): (Z)-3-hexenal (2048), phenylacetaldehyde (512), phenylacetic acid (512), 2-acetyl-1-pyrroline (256), dimethyl trisulfide (256), 2-/3-methylbutanoic acid (256), anisaldehyde (256), indole (256), methional (128), 2-isobutyl-3-methoxypyrazine (128), trans-4,5-epoxy-(E)-2-decenal (128), (Z)-1,5-octadien-3-one (64), acetic acid (64), eugenol (64), and 3-phenylpropionic acid (16). \\ |
| [Ruisinger, Brigitte, and Peter Schieberle. "Characterization of the key aroma compounds in rape honey by means of the molecular sensory science concept." Journal of agricultural and food chemistry 60.17 (2012): 4186-4194] | [Ruisinger, Brigitte, and Peter Schieberle. "Characterization of the key aroma compounds in rape honey by means of the molecular sensory science concept." Journal of agricultural and food chemistry 60.17 (2012): 4186-4194] |
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| | "Heat-processing of Brassica seeds led to the formation of a characteristic pleasant popcorn-like and coffee-like aroma impression compared to the mainly pea-like aroma of the corresponding raw seeds." \\ |
| | Among the volatiles, 2-isopropyl-3-methoxypyrazine (earthy, pea-like) and 4-ethenyl-2-methoxyphenol (clove-like, smoky) showed high FD factors in raw seeds. 4-Hydroxy-2,5-dimethylfuran-3(2H)-one (caramel-like), 2,3-diethyl-5-methylpyrazine (earthy), dimethyl trisulfide (cabbage-like), and 2-acetyl-1-pyrroline (popcorn-like) showed high flavor dilution (FD) factors in roasted seeds. \\ |
| | [Ortner, Eva, Michael Granvogl, and Peter Schieberle. "Elucidation of thermally induced changes in key odorants of white mustard seeds (Sinapis alba L.) and rapeseeds (Brassica napus L.) using molecular sensory science." Journal of agricultural and food chemistry 64.43 (2016): 8179-8190] |
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| {{:brassica_napus.jpg?600}} \\ | {{:brassica_napus.jpg?600}} \\ |
| Masclef,A., Atlas des plantes de France, vol.2, t.28 (1890) \\ | Masclef,A., Atlas des plantes de France, vol.2, t.28 (1890) \\ |
| [[http://plantgenera.org/species.php?id_species=156079]] | [[http://plantgenera.org/species.php?id_species=156079]] |
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| {{http://www.botanische-spaziergaenge.at/Bilder/Lumix_3/P1140372.JPG}} \\ | {{http://www.botanische-spaziergaenge.at/Bilder/Lumix_3/P1140372.JPG}} \\ |
| Brassica napus subsp. napus \\ © Rolf Marschner (2009), | Brassica napus subsp. napus \\ © Rolf Marschner (2009), |
| [[http://botanische-spaziergaenge.at/viewtopic.php?f=463&t=1721| www.botanische-spaziergaenge.at]] | [[http://botanische-spaziergaenge.at/viewtopic.php?f=463&t=1721| www.botanische-spaziergaenge.at]] |
