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脂肪酸酸酶的改善基质特异性使得有效和选择性地分离了酸

Dong Lu^1,2, Shuming Jin¹, Qiuyang Wu¹

¹College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China.

Journal of agricultural and food chemistry

|August 27, 2025

概括

工程酶改善了从油酸 (OA) 中选择性分离酸 (LA). 这种绿色酶方法提供了更高的纯度和回收,减少了能源使用和加工时间.

科学领域:

生物技术
生物催化
化学工程

背景情况:

由于具有相似的特性,难以将酸 (LA) 与油酸 (OA) 分离.
传统的蒸方法需要大量的能量,
现有的脂肪酸酸酶 (FAH) 缺乏足够的OA特异性.

研究的目的:

来自*Bifidobacterium breve* (BbMCRA2) 的脂肪酸酶 (FAH) 进行工程,以提高油酸 (OA) 的选择性.
开发一种有效的绿色方法来分离酸 (LA).

主要方法:

半导体设计用于优化BbMCRA2的基板道几何.
创建了I206V和I202V/I209V的突变,并对OA选择性进行了测试.
对酶水化过程的反应动力学进行了优化.

主要成果:

改造后的突变体具有4. 7倍和5. 5倍的骨质炎选择性.
在5L系统中,酸 (LA) 隔离达到94. 3%的纯度和81. 7%的回收.
与传统方法相比,酶化工艺显著减少了能源消耗和加工时间.

结论:

设计的BbMCRA2为OA转化提供了高度选择性的生物催化剂.
这种酶性水化策略为工业LA净化提供了一种绿色,经济有效和高效的方法.
氧脂肪酸 (HFA) 生产的提高特异性使脂肪酸的分离能力更高.

关键词:

BbMCRA2 的酶酸净化反应动态分辨率基板的选择性道工程

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