Environmental microbiota and its influence on microbial succession and metabolic profiles in baijiu fermentation across three distinct-age workshops

文献类型： 外文期刊

第一作者： Xu, Shanshan

作者： Xu, Shanshan;Zhou, Hao;Xu, Boyang;Liu, Wuyang;Hu, Weiqi;Li, Xingjiang;Liu, Yongxin;Xu, Qinxiang;Hong, Jiong

作者机构：

关键词： Jian-flavor baijiu; Environmental microbiome; Solid-state fermentation; Source tracking; Succession rate; Metabolite production

期刊名称：LWT-FOOD SCIENCE AND TECHNOLOGY （ 影响因子：6.0； 五年影响因子：6.0 ）

ISSN： 0023-6438

年卷期： 2024 年 201 卷

页码：

收录情况： SCI

摘要： The fermentation of Baijiu is profoundly influenced by environmental microbiota, but the exact origins and the specific impacts of these microbes are not entirely understood. To address this issue, we used reverse-analysis to comprehensively map the environmental sources and reveal their pivotal role in shaping microbial succession and metabolic variations across three workshops of different ages. We initially discovered that these workshops exhibited unique microbial succession and metabolic profiles in baijiu fermentation. Further investigation revealed that environmental microbiota associated with Baijiu fermentation showed a distinct separation between outdoor and indoor settings, especially in the 70-year-old workshop (workshop 70y). The unique distribution of environmental microbes in workshop 70y did not only accelerate microbial succession 5 days earlier, but also significantly enhanced ester production, with an increase from 60.63 mu g/mL to 155.31 mu g/mL. Source tracking revealed that the rich indoor environmental microbes in the workshop 70y dominated the whole fermentation, while the 2-year-old workshop (workshop 2y) and the 20-year-old workshop (workshop 20y) initially relied on Raw Materials (RM) and Daqu (DQ) microbes, but the control gradually shifted to indoor environment. These findings might offer valuable implications for Baijiu quality control, and enhance our understanding of the functional roles of the environmental microbiome.

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