Characterization of the Key Odorants in Chinese Zhima Aroma-Type Baijiu by Gas Chromatography-Olfactometry, Quantitative Measurements, Aroma Recombination, and Omission Studies
Characterization of the Key Odorants in Chinese Zhima Aroma-Type Baijiu by Gas Chromatography-Olfactometry, Quantitative Measurements, Aroma Recombination, and Omission Studies
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通过气相色谱-嗅觉测定、定量测量、香气重组和遗漏研究对中国芝麻香型白酒中的关键气味物质进行表征
DOI：
10.1021/acs.jafc.6b01390
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发表时间：
2016-07-06
影响因子：
6.1
通讯作者：
Li, Hehe
中科院分区：
文献类型：
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作者：
Zheng, Yang;Sun, Baoguo;Li, Hehe
芝麻香型白酒具有典型的芝麻香气，在中国北方尤为受欢迎。据我们所知，尽管有一些研究报道了该白酒中的许多挥发性化合物，但哪些成分对其独特香气有重要贡献仍不确定。本文对该白酒中的香气活性化合物进行了研究。通过香气提取物稀释分析（AEDA），在中国芝麻香型白酒中总共鉴定出56种气味物质。通过不同的定量测量确定了它们的气味活度值（OAVs），然后由于其OAVs≥1，进一步确定26种香气化合物为重要的气味物质，并且这些物质具有较高的值，例如己酸乙酯（OAV 2691）、3 - 甲基丁醛（2403）、戊酸乙酯（1019）等。通过将26种关键气味物质按其测量浓度混合，可以模拟芝麻香型白酒的整体香气。重组模型与商业样品之间整体香气轮廓的相似度在3.0分中被判定为2.7分。缺失实验进一步证实了甲硫氨酸和己酸乙酯对中国芝麻香型白酒整体香气的重要性。
Zhima aroma-type Baijiu with typical sesame aroma is particularly popular in northern China. To our knowledge, it is still uncertain which components are important to make contributions to its unique aroma, although a few pieces of research have reported many volatile compounds in this Baijiu. The aroma-active compounds from the Baijiu were researched in this paper. A total of 56 odorants were identified in Chinese Zhima aroma-type Baijiu by aroma extract dilution analysis (AEDA). Their odor activity values (OAVs) were determined by different quantitative measurements, and then 26 aroma compounds were further confirmed as important odorants due to their OAVs >= 1, and these had higher values, such as ethyl hexanoate (OAV 2691), 3-methylbutanal (2403), ethyl pentanoate (1019), and so on. The overall aroma of Zhima aroma-type Baijiu could be simulated by mixing of the 26 key odorants in their measured concentrations. The similarity of the overall aroma profiles between the recombination model and the commercial sample was judged to be 2.7 out of 3.0 points. Omission experiments further corroborated the importance of methional and ethyl hexanoate for the overall aroma of Chinese Zhima aroma-type Baijiu.