Elucidating oxidation-based flavour formation mechanism in the aging process of Chinese distilled spirits by electrochemistry and UPLC-Q-Orbitrap-MS/MS

IF 10.4 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2021-09-01 Epub Date: 2021-03-17 DOI:10.1016/j.foodchem.2021.129596

Qing Zheng , Zihao Wang , Ayuan Xiong , Yaru Hu , Ying Su , Kun Zhao , Yougui Yu

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引用次数: 12

Abstract

The oxygen-based oxidation process is leading toward the understanding of the flavour formation mechanism of aged Baijiu. However, the oxygen-based oxidation process in Baijiu aging is difficult to explore because of (1) the composition of Baijiu produced in different batches varies a lot and (2) the spontaneous oxidation needs several years or even decades to occur. Hence, the flavour formation mechanism of Baijiu aging was investigated using electrochemistry and UPLC-Q-Orbitrap-MS/MS, which enabled us to solve the two difficulties above. The oxidation reaction on gold surface could accelerate Baijiu aging by catalyzing the transformation from alcohols to acids. Although natural aging contributed more diverse compound changes to Baijiu, the oxygen-based oxidation process during natural aging was similar to that in the electrochemical oxidation as a whole. This study provides new insights to flavour formation mechanism of aged liquors and provides a new way for liquor-related enterprises to optimise the aging process.

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电化学和UPLC-Q-Orbitrap-MS/MS分析中国白酒陈酿过程中氧化味的形成机制

氧基氧化过程有助于了解陈年白酒风味形成机理。然而，由于(1)不同批次白酒的成分差异很大，(2)自发氧化需要几年甚至几十年的时间才能发生，因此白酒的氧基氧化过程很难探索。为此，采用电化学和UPLC-Q-Orbitrap-MS/MS技术对白酒陈酿过程中风味形成机理进行了研究，解决了上述两个难题。金表面的氧化反应通过催化醇类向酸类的转化而加速白酒的老化。虽然自然老化对白酒化合物变化的贡献更为多样化，但自然老化过程中的氧基氧化过程总体上与电化学氧化过程相似。本研究对陈酿白酒风味形成机理提供了新的认识，为白酒企业优化陈酿工艺提供了新的途径。

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.