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cydonia_oblonga_mill [2017/10/27 18:46] andreas |
cydonia_oblonga_mill [2021/02/28 10:39] andreas |
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The essential oil (yield 0.004~0.017%) obtained by steam distillation of fresh C.oblonga from Japan had a strong fruity aroma and consisted mainly of trans-α-farnesene (58%). Furthermore, | The essential oil (yield 0.004~0.017%) obtained by steam distillation of fresh C.oblonga from Japan had a strong fruity aroma and consisted mainly of trans-α-farnesene (58%). Furthermore, | ||
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[Tsuneya, Tomoyuki, et al. " | [Tsuneya, Tomoyuki, et al. " | ||
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62 compounds were identified in the essential oil (steam distillation) of quince fruit, trans-α-farnesene (31.3%), (+)-trans-marmelo lactone (10.3%) and (-)-cis-marmelo lactone (13.0%) were detected as the major components. The marmelo lactones own a sweet and strong aroma and seem to contribute considerable to the main aroma of quince fruit. Some of the furfural (3.4%) probably is derived from the decomposition of precursors such as pentose and ascorbic acid in the process of steam distillation. The four stereoisomers of megastigma-4, | 62 compounds were identified in the essential oil (steam distillation) of quince fruit, trans-α-farnesene (31.3%), (+)-trans-marmelo lactone (10.3%) and (-)-cis-marmelo lactone (13.0%) were detected as the major components. The marmelo lactones own a sweet and strong aroma and seem to contribute considerable to the main aroma of quince fruit. Some of the furfural (3.4%) probably is derived from the decomposition of precursors such as pentose and ascorbic acid in the process of steam distillation. The four stereoisomers of megastigma-4, | ||
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"Ripe quince fruits are not edible raw because of their hardness and bitterness, but they nevertheless emit a floral odor so strong that they are sometimes used as household room refreshers." | "Ripe quince fruits are not edible raw because of their hardness and bitterness, but they nevertheless emit a floral odor so strong that they are sometimes used as household room refreshers." | ||
[Volatile constituents of peel of quince fruit, Cydonia oblonga Miller., Umano, K., Shoji, A., Hagi, Y., Shibamoto, T., Journal of Agricultural and Food Chemistry, Vol.34(4), 1986, 593-596] | [Volatile constituents of peel of quince fruit, Cydonia oblonga Miller., Umano, K., Shoji, A., Hagi, Y., Shibamoto, T., Journal of Agricultural and Food Chemistry, Vol.34(4), 1986, 593-596] | ||
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+ | Theaspiranes A/B (fresh green-woody/ | ||
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+ | Main volatile components (HS-GC-MS) of freeze-dried fruit puree were ethanol (~50%), ethyl acetate (35.4%), ethyl hexanoate (2.8%), the theaspiranes (2.2%), ethyl octanoate (1.4%), and ethyl 2-methylbutyrate (~1%). Minor components were e.g. limonene, trimethylbenzol, | ||
+ | [Heiduk, Andrea. Einfluss verschiedener Trocknungsmethoden auf Aromen von Quitten und Scheinquitten. Diss. Hochschule, 2018, 43-47] | ||
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