对乳酸细菌的共同发酵和基因组洞察力,用于使用非转基因方法增强酸生产
Lidia Stasiak-Różańska1, Jan Gawor2, Kamil Piwowarek3
1Department of Food Technology and Assessment, Institute of Food Sciences, Warsaw University of Life Sciences, Nowoursynowska St. 159c, 02-776 Warsaw, Poland.
Foods (Basel, Switzerland)
|May 14, 2025
概括
这项研究引入了一种使用乳酸细菌 (LAB) 来可持续生产酸 (PA) 和1,2-二醇 (PDO) 的新型共发酵方法. 细菌菌株之间的代谢合作是增强生物合成的关键.
科学领域:
- 微生物学 微生物学
- 生物技术是生物技术.
- 生物化学工程 生物化学工程
背景情况:
- 酸 (PA) 是一种有价值的有机酸,具有多种工业应用.
- 目前的PA生产严重依赖于石化工艺,推动了对可持续替代品的需求.
- 微生物生物合成提供了一条更绿色的路线,乳酸细菌 (LAB) 显示出希望.
研究的目的:
- 开发一种可持续的共同发酵策略,以利用LAB.使用增强酸 (PA) 生物合成.
- 通过代谢合作来研究1,2-二醇 (PDO) 通过代谢合作产生PA的途径.
- 为了识别和表征LAB菌株与PA和PDO合成的互补的代谢功能.
主要方法:
- 基于基因组的LAB菌株对PDO和PA通路能力的选.
- 表型测定用于评估糖代谢和酸耐受性.
- 使用果糖-酸盐-葡萄糖介质的共同培养发酵试验.
主要成果:
- 确定了不同的LAB角色:一些产生PDO (例如,Carnobacterium maltaromaticumIBB3447),另一些将PDO转化为PA (例如,Levilactobacillus brevisIBB3735).
- 在C.中发现了新的PDO生物合成能力. 马尔塔罗马蒂库姆 IBB3447.7.
- 在共同培养中获得了最高的PA度 (6.87毫米) 和PDO积累 (13.13毫米),证明了重要的代谢合作.
结论:
- 建立了一个基于LAB的新型生物工艺,用于可持续的PA和PDO生产.
- 该过程依赖于交叉料相互作用和废物流的利用.
- 这些发现支持对循环生物经济应用的未来优化.
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