Stereoselective synthesis of (6Z,8E)-undeca-6,8,10-trien-3-one (yuzunone) for its characterization in yuzu and various citrus essential oils
作者:Ayaka Uehara、Nicolas Baldovini
DOI:10.1016/j.foodchem.2020.128130
日期:2021.2
(6Z,8E)-Undeca-6,8,10-trien-3-one (yuzunone) is reported to be one of the main olfactory contributors of the specific fruity-green-balsamic odor of yuzu peel oil. Using an original stereoselective synthesis, we prepared a pure sample of yuzunone, which was used as a reference compound to check its presence by GC-MS and GC-O in 5 commercial samples of yuzu and citrus essential oils. Surprisingly, we could not detect yuzunone by GC-MS in any of our samples. However, it could be detected by a small part of the panelists involved in GC-O/AEDA experiments in a yuzu commercial oil, but its olfactory contribution proved to be very limited.
据报道,(6Z,8E)-十一碳-6,8,10-三烯-3-酮(yuzunone)是柚子果皮油特有的 fruity-green-balsamic 气味的主要嗅觉贡献因素之一。我们采用原创的立体选择性合成方法制备了纯的 yuzunone 样品,并将其作为参考化合物,通过 GC-MS 和 GC-O 检测了 5 种市售柚子和柑橘精油样品中是否含有 yuzunone。令人惊讶的是,我们在任何样品中都无法通过 GC-MS 检测到 yuzunone。然而,在 GC-O/AEDA 实验中,小组成员中有一小部分在一种市售柚子油中检测到了 yuzunone,但其嗅觉贡献被证明非常有限。