首页> 外文会议>Food flavor : Chemistry, sensory evaluation, and biological activity >The role of (5E)-2,6-Dimethyl-5,7-octadiene-2,3-diol as Aroma Precursor in Badea (Passiflora quadrangularis L.) Fruit
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The role of (5E)-2,6-Dimethyl-5,7-octadiene-2,3-diol as Aroma Precursor in Badea (Passiflora quadrangularis L.) Fruit

机译:(5E)-2,6-二甲基-5,7-辛二烯-2,3-二醇在Badea(Passiflora quadrangularis L.)果实中作为香气前体的作用

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摘要

Model reactions at pH 3.2 were used to study the acid-catalyzed transformation of the monoterpenediol (5E)-2,6-dimethyl-5,7-octadiene-2,3-diol (one of the major constituents of Passiflora quadrangularis fruit flavour) into the isomeric cis- and trans-4-hydroxylinalool 3,6-oxides. The chemical structure of these new monoterpenoid oxides was elucidated by using GC-MS and ~1H- and ~(13)C-NMR. Total conversion of the diol was obtained after 40 days, in yields of 28.5 and 71.5%, respectively. Additionally, it was confirmed that the amount of the monoterpenoid oxides is increased when P. quadrangularis fruit is heated.
机译:pH为3.2的模型反应用于研究酸的单萜二醇(5E)-2,6-二甲基-5,7-辛二烯-2,3-二醇(西番莲西番莲果味的主要成分之一)的转化变成顺式和反式4-羟基芳樟醇3,6-氧化物的异构体。这些新的单萜类氧化物的化学结构通过使用GC-MS以及〜1H-和〜(13)C-NMR进行了阐明。 40天后获得二醇的总转化率,分别为28.5和71.5%。另外,已经证实,当加热四角对虾果实时,单萜类氧化物的量增加。

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