脂肪酶
生物柴油
酯交换
化学
生物催化
催化作用
有机化学
化学工程
酶
反应机理
工程类
作者
Fengchao Zha,Min Shi,Hui Li,Jiajia Rao,Bingcan Chen
出处
期刊:Fuel
[Elsevier]
日期:2024-02-01
卷期号:357: 129854-129854
被引量:10
标识
DOI:10.1016/j.fuel.2023.129854
摘要
A hybrid lipase@ZIF-8 biocatalyst was fabricated via a facile one-pot approach and coordination-driven self-assembly strategy. Entrapment immobilization of lipase in metal–organic frameworks (MOFs) was meticulously validated. The reduced Km value and apparent activation energy confirmed that the lipase@ZIF-8 registered a superior enzyme-substrate affinity than free ones. A concomitant conformational rearrangement occurred as lipase was encapsulated into the porous zeolite-like topologies, wherein lipase architectures presented more flexibility in character. An approximate 75% biodiesel yield was achieved when the biocomposites-catalyzed transesterification was conducted at given conditions. Notably, the lipase@ZIF-8 exhibited certain substrate-selectivity by deciphering the discrepancy in fatty acid profiles of the resulting biodiesel. Besides, the lipase@ZIF-8 biocomposites showed reasonable reusability and remained around 80% of initial activity after five cycles of transesterification. Consequently, the encapsulation of lipase into MOFs is a viable and sustainable avenue to address free lipase's intrinsic limitation, and underscores the immense potential in biodiesel production.
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