在汁风味的 Baijiuu 油坑发酵过程中,细菌群体的定数感应相关的酸适应
Weiwei Dong1, Tianlun Ye1, Zongjie Zhang1
1Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization, College of Life Sciences, Hubei Normal University, Huangshi, China.
International journal of food microbiology
|March 5, 2026
概括
在味的Baijiu发酵中,酸度的增加推动了细菌社区的转移. 通过LuxS/AI-2模块进行定数感应 (QS),有助于酸适应和Acetilactobacillus jinshanensis在传统工艺中的主导地位.
科学领域:
- 微生物学 微生物学
- 发酵科学 发酵科学
- 食品生物技术 食品生物技术
背景情况:
- 味的Baijiu生产涉及多轮固态发酵,酸度增加.
- 细菌的适应机制以及在这种极端酸性压力环境中量子感应 (QS) 的作用尚不清楚.
研究的目的:
- 为了研究细菌社区适应Baijiu发酵中的高酸度.
- 探索定数感应 (QS) 特性在微生物弹性和主导性中的参与.
主要方法:
- 从传统和机械化Baijiu生产工艺中发酵的谷物的元基因组测序和物理化学分析.
- 规范性对应分析以确定影响细菌群落的关键环境因素.
- 酸适应基因的QS基因分析和功能注释.
主要成果:
- 传统的工艺表现出更快的酸化,更高的乳酸积累和更低的细菌多样性,汇聚到Acetilactobacillus jinshanensis的主导地位 (>90%).
- 机械化过程保持了更高的多样性,其中包括A. jinshanensis,Lactobacillus acetotolerans,Bacillus和actinomycetes等多种核心.
- 酸度 (乳酸) 是分歧的主要驱动因素;在传统过程中,LuxS/AI-2 QS模块与酸适应基因一起得到了丰富.
结论:
- 细菌群体在 Baijiu 发酵过程中对高酸度的反应中表现出不同的适应轨迹.
- 该LuxS/AI-2的定数传感系统与酸性适应和高酸性环境中的A. jinshanensis的主导地位有关.
- 结果为 Baijiu 生产提供了对微生物弹性的生态洞察力和基于质量保障的战略.
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