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从糖蜜到精制的α-甲酸酸盐,使用工程Corynebacterium glutamicum进行了改造

Lars Halle¹, Daniela Höppner², Marvin Doser²

¹Institute of Bio- and Geosciences - IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52425 Jülich, Germany; Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074 Aachen, Germany; Bioeconomy Science Center (BioSC), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.

Bioresource technology

|November 13, 2024

概括

微生物生产的α-甲酸盐 (AKG) 为化学合成提供了一个可持续的替代方案. 一种Corynebacterium glutamicum菌株使用糖蜜实现了高AKG产量,证明了高效的工业潜力.

科学领域:

生物技术是生物技术.
工业微生物学工业微生物学
代谢工程是代谢工程.

背景情况:

阿尔法谷氨酸 (AKG) 的化学合成带来了环境和效率方面的挑战.
AKG是一种关键的二碳酸,在食品,制药和化学品中具有广泛的应用.
为AKG开发可持续的微生物生产途径至关重要.

研究的目的:

为增强AKG生产而设计和表征Corynebacterium glutamicum菌株.
为了评估AKG生产使用糖蜜,一个可持续的原料.
优化和扩大微生物AKG生产过程.

主要方法:

用Corynebacterium glutamicum的代谢工程来创建四个生产菌株.
在定义介质和工业糖蜜上对菌株的表征.
通过液体-液体提取方法培养和下游处理的Feed-batch生物反应器.

主要成果:

一种工程菌株 (C. glutamicum P_O6-iolT1Δgdh ΔgltB mscCG' ΔodhA) 在糖蜜上表现优越.
使用糖蜜实现了96.2g/L AKG的扩大规模,使用糖蜜的转换产量为0.64g/g.
下游加工产生了>93%的AKG纯度,提取效率为87%.

结论:

经过代谢工程的C. glutamicum从糖蜜中表现出强大的AKG生产.
开发的微生物工艺为化学AKG合成提供了可持续和高效的替代方案.
成功的扩展和净化突显了这种生物工艺的工业可行性.

关键词:

生物经济是生物经济.生物塑料是生物塑料.生物工艺开发的发展.在Corynebacterium glutamicum的研究中,我们发现代谢工程是代谢工程.蜂蜜糖是什么意思蜂蜜糖是什么意思废物流是一个废物流.α-基质酸盐的使用情况

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