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乙烯糖醇同化途径的多标准评估

Michelle Feigis¹, Radhakrishnan Mahadevan¹

¹University of Toronto, Department of Chemical Engineering and Applied, Chemistry, Toronto, Ontario M5S 3E4, Canada.

Journal of industrial microbiology & biotechnology

|February 16, 2026

概括

生物制造可以利用乙烯基醇作为可持续原料. 合成途径提供更高的产量,而自然途径提供更好的控制生物过程.

科学领域:

生物技术和生物制造
代谢工程是代谢工程.
可持续化学可持续化学

背景情况:

生物制造为基于化石燃料的化学品和燃料生产提供了一个可持续的替代方案.
需要具有成本效益的非食品竞争生物生产原料.
从塑料废物或二氧化碳中衍生出来的乙烯基醇是有前途的非传统碳来源.

研究的目的:

系统地评估天然和合成的代谢途径以乙烯糖醇的同化.
根据理论产量,热力学,酶成本和直角性来确定最佳路径.

主要方法:

理论建模方法被用来分析五种不同的代谢途径.
评估标准包括最大理论产量,热力学有利性,酶成本和与细胞生长的直角性.
合成甘醇化同化 (SAGA) 和合成乙-CoA同化 (SACA) 途径与天然途径 (如甘酸盐途径和β-酸盐循环 (BHAC)) 的比较.

主要成果:

合成途径通常在生物质和生物制品方面实现更高的理论产量.
SAGA途径显示出优异的整体产量,而SACA途径显示出最佳的热力学有利性和最低的酶成本.
自然路径,特别是糖酸盐路径,提供了有利的热力学和适度的酶成本,与生长的正交度更高,适合动态生产系统. BHAC的表现很差. 在这个过程中,BHAC表现不佳.

结论:

不同类型的乙烯糖醇同化途径之间存在明显的权衡.
合成途径有利于最大限度地提高产量,而天然途径则有利于过程控制.
这些发现指导了选择最佳的乙烯糖醇同化策略,以实现可持续的生物工艺开发.

关键词:

其他替代原料替代原料乙烯基甘醇是一种乙烯基甘醇.代谢工程是代谢工程.合成生物学合成生物学

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