(5<i>E</i>/<i>Z</i>,7<i>E</i>,9)-Decatrien-2-ones, Pineapple-like Flavors from <i>Fomitopsis betulina</i>—Structure Elucidation and Sensorial Properties
作者:Miriam Grosse、Tim Pendzialeck、Jörg Fohrer、Ralf G. Berger、Ulrich Krings
DOI:10.1021/acs.jafc.9b06105
日期:2020.9.23
and most characteristic pineapple-like odor was found for (5Z,7E,9)-decatrien-2-one. Global minimum energy calculation of the methyl ketones and the comparison to (1,3E,5Z)-undecatriene, a character impact compound of fresh pineapple, showed that a chain length of at least 10 carbon atoms and a terminal double bond embedded in a “L”-shaped conformation were common to compounds imparting an intense pineapple-like
在农用工业支流上栽培食用菌Fetopsis betulina的过程中,感觉到令人强烈联想到菠萝的令人愉悦的味道。香精提取物稀释分析确定了两种具有明显菠萝味的风味成分。根据质谱数据,进行了(E)-戊-2,4-二烯-1-基三phosph溴化膦与乙酰丙酸乙酯的维蒂希反应。结果(5 E / Z,7 E,9)-癸三烯-2-酮与从真菌培养物中分离的化合物相同。合成了一些结构相关的甲基酮,经核磁共振和质谱法证实,并对其气味进行了表征。对于(5 Z,7 E,9)-十碳三烯-2-酮,发现最低的气味阈值和最典型的菠萝状气味。甲基酮的全球最小能量计算以及与(1,3 E,5 Z)-十一碳三烯(一种新鲜菠萝的特征冲击化合物)的比较表明,链长至少10个碳原子,并且末端嵌入了一个双键“ L”形构象是赋予强烈菠萝状气味的化合物所共有的。两者(5 E / Z,7 E,9)-癸三烯-2-酮尚未被描述为天然香料化合物。