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微气泡增强的CO2转化为乙醇用于人工CC凝结路径

Wanrong Dong¹, Xiuling Ji², Boxia Guo³

¹Beijing Key Laboratory of Solid State Battery and Energy Storage Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Mesoscience and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan 430062, China.

Bioresource technology

|December 16, 2025

概括

研究人员创造了简短的人工途径来将二氧化碳 (CO2) 转化为乙醇,提高了碳转化效率. 这种二氧化碳转化为乙醇的系统为可再生生物燃料提供了一个碳中和的途径.

科学领域:

生物技术是生物技术.
合成生物学合成生物学
化学工程是化学工程的重要组成部分.

背景情况:

有效地将二氧化碳 (CO2) 循环转化为可再生生物燃料对于可持续发展至关重要.
目前用于二氧化碳转化的人工途径通常涉及复杂的多步骤过程,限制了效率.

研究的目的:

设计和演示最小化碳二氧化碳转化为乙醇 (CTE) 的人工途径.
优化一种新的途径,提高碳转化效率和乙醇产量.

主要方法:

开发了两种线性人工CTE通路 (CTE 2.1和CTE 2.2) 使用碳-碳 (CC) 结合酶,如糖醇合酶 (GALS) 和基酶 (PKT).
通过酶选,优化PKT介导的CTE 2.2通路,以检测甲凝聚活性,并通过微泡空气化增强CO2溶解度.
对优化途径的乙醇产量和碳转化率的表征.

主要成果:

证明了两个人造CTE通路,其中PKT介导的CTE 2.2通路仅包括六个反应步骤.
通过优化 CTE 2.2 途径实现了 1.029 mM 的乙醇产量和 33.5 nmol/mg·min 的碳转化率.
优化的路径优于之前报告的人工二氧化碳上循环系统.

结论:

开发的碳储存和ATP独立的CO2到乙醇系统为生物燃料生产提供了高效和碳中和的途径.
这项工作在二氧化碳利用人工途径方面取得了重大进展,有助于实现可持续发展目标.

关键词:

在C-C结合酶中.二氧化碳 (CO2) 生物转化碳转化率是指碳的转化率.乙醇合成乙醇合成微气泡是一种微气泡.短时间的人工通道.

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