Identification and Characterization of Sulfur Heterocyclic Compounds That Contribute to the Acidic Odor of Aged Garlic Extract
Identification and Characterization of Sulfur Heterocyclic Compounds That Contribute to the Acidic Odor of Aged Garlic Extract
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DOI：
10.1021/acs.jafc.0c06634
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发表时间：
2021-01-27
影响因子：
6.1
通讯作者：
Nojima, Satoshi
中科院分区：
文献类型：
--
作者：
Abe, Kazuki;Myoda, Takao;Nojima, Satoshi
陈年大蒜提取物(AGE)的香气最近被描述为一种复杂的调味料、金属、脂肪和酸性气味；大多数重要的香气化合物都是在先前的研究中鉴定出来的。除了先前确定的25种陈年香气外，还使用各种分析技术分离和鉴定了几种导致酸味的气味化合物，包括气相色谱与嗅觉监测系统(GC-O)、准确和高效的制备型GC系统、GC-MS分析和感官评估。鉴定出的香气包括：2，4-二甲基-1，3-二硫杂环戊烷、2，5-二甲基-1，4-二硫杂环戊烷和2，6-二甲基-1，4-二硫杂环戊烷。有趣的是，AGE包含所有这些成分的立体异构体。新鉴定的酸性气味与其他关键香气组成的香气重组与陈年香气表现出很好的一致性。
The aroma of aged garlic extract (AGE) has been recently characterized as a complexity of seasoning-like, metallic, fatty, and acidic notes; most of the important aroma compounds were identified in a previous study. Besides the 25 previously identified aromas of AGE, several of the odor compounds that contribute to the acidic notes were isolated and identified using various analytical techniques, including gas chromatography coupled with an olfactometry monitoring system (GC-O), accurate and high-performance preparative GC system, GC-MS analysis, and sensory evaluation. The identified aromas include: 2,4-dimethyl-1,3-dithiolane, 2,5-dimethyl-1,4-dithiane, and 2,6-dimethyl-1,4-dithiane. Interestingly, AGE contains all stereoscopic isomers of each of these components. An aroma recombinant composed of the newly identified acidic odors with other key odorants showed good agreement with the aroma of AGE.