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社区的动态和组装是由环境微生物群驱动的,通过时空分布进行介导:达库发酵的案例
Shibo Ban1, Yi Shen2, Wei Cheng2
1Lab of Brewing Microbiology and Applied Enzymology, Key Laboratory of Industrial Biotechnology of Ministry of Education, State Key Laboratory of Food Science and Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
International journal of food microbiology
|October 15, 2024
概括
环境微生物显著影响达克发酵,原材料贡献更多的细菌和环境更多的真菌. 由环境微生物驱动的微生物社区聚集,最终增强发酵食品中的风味化合物多样性.
科学领域:
- 微生物学 微生物学
- 发酵科学 发酵科学
- 食品科学 食品科学 食品科学
背景情况:
- 微生物相互作用在所有环境中都至关重要,但它们对自发发酵的影响仍然不太清楚.
- 环境微生物传输塑造了社区动态,导致了协同或对抗性的效应.
- 作为传统的发酵起始剂,达库对于许多发酵食品至关重要,使其微生物生态成为一个关键的研究领域.
研究的目的:
- 调查原材料与环境对DAQ发酵的微生物贡献,在不同使用时间的工厂中进行.
- 分析环境微生物群,发酵特性和风味化合物之间的关系.
- 阐明环境微生物群如何影响微生物群的组合和发酵质量.
主要方法:
- 在不同年龄段 (60,10,0岁) 的Daqu车间对微生物群的比较分析.
- 评估原材料和环境对发酵的微生物贡献.
- 路径分析以确定环境微生物群对微生物多样性,社区聚集和风味化合物的影响.
主要成果:
- 原材料微生物群贡献了更多的细菌属 (44.70%-73.56%),而环境微生物群贡献了更多的真菌属 (10.09%-99.76%).
- 研讨会年龄与微生物社区组合相关;较旧的研讨会 (X,Y) 比新研讨会 (Z) 显示出更高的决定性组合和相互作用强度.
- 环境微生物群对微生物多样性产生了负面影响,但通过社区动态和组装积极影响了风味化合物多样性.
结论:
- 环境微生物群扮演着双重的角色,最初减少了多样性,但最终在Daqu发酵中增强了风味复杂性.
- 了解环境微生物群和发酵过程之间的相互作用是提高自发发酵食品质量的关键.
- 这项研究提供了对优化Daqu初始培养的见解,以实现一致和高质量的发酵食品生产.
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