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--- brassica_napus_l [2015/05/08 22:51]
andreas
+++ brassica_napus_l [2019/02/03 15:37]
andreas
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 [Identification of floral volatiles involved in recognition of oilseed rape flowers, Brassica napus by honeybees, Apis mellifera., Blight, M.M., Le Métayer, M., Delègue, M.H.P., Pickett, J.A., Marion-Poll, F., Wadhams, L.J., Journal of chemical ecology, Vol.23(7), 1997, 1715-1727]
-"The major constituents identified were the monoterpenes limonene, sabinene, β-myrcene, and cis-3-hexen-1-ol acetate, a ‘green leaf’ volatile. The minor constituents included monoterpenes, sesquiterpenes, short chain aldehydes and ketones, other ‘green leaf’ volatiles and organic sulphides including the respiratory irritant, dimethyl disulphide." \\
+During its flowering season, oilseed rape has been associated by rural dwellers with seasonal symptoms, such as sneezing, coughing, headache and eye irritation. Headspace analysis under field conditions showed the main volatile organic compounds emitted in the field were limonene, sabinene, β-myrcene, and cis-3-hexen-1-ol acetate. Minor components included short chain aldehydes and ketones, other ‘green leaf’ volatiles and organic sulphides including the respiratory irritant, dimethyl disulphide. \\
 [Identification of volatile organic compounds emitted in the field by oilseed rape (Brassica napus ssp. oleifera) over the growing season., Smith, M., Clinical & Experimental Allergy, Vol.28(3), 1998, 332-338]
-{{:brassica_napus.jpg?500}} \\
+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." \\
+[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]
+{{:brassica_napus.jpg?600}} \\
 Masclef,A., Atlas des plantes de France, vol.2, t.28 (1890) \\
 [[http://plantgenera.org/species.php?id_species=156079]]
+{{http://www.botanische-spaziergaenge.at/Bilder/Lumix_3/P1140372.JPG}} \\
+Brassica napus subsp. napus \\ © Rolf Marschner (2009),
+[[http://botanische-spaziergaenge.at/viewtopic.php?f=463&t=1721| www.botanische-spaziergaenge.at]]

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