A green and efficient two-step enzymatic esterification-hydrolysis method for enrichment of c9,t11-CLA isomer based on a three-liquid-phase system
作者:Zhigang Li、Yinglin Fang、Jiawei Yang、Huayong Chen、Bo Yang、Yonghua Wang
DOI:10.1039/d3ra02054a
日期:——
A novel two-step enzymatic esterification-hydrolysis method that generates high-purity conjugated linoleic acid (CLA) isomers was developed. CLA was first partially purified by enzymatic esterification and then further purified by efficient, selective enzymatic hydrolysis in a three-liquid-phase system (TLPS). Compared with traditional two-step selective enzymatic esterification, this novel method
开发了一种新型两步酶促酯化-水解方法,可产生高纯度共轭亚油酸(CLA)异构体。 CLA 首先通过酶酯化进行部分纯化,然后通过三液相系统 (TLPS) 中高效、选择性的酶水解进一步纯化。与传统的两步选择性酶酯化相比,该新方法产生了高纯度的顺式-9,反式-11(c9,t11)-CLA(96%),转化率高(约36%),并且避免了复杂的再水解和再酯化步骤。 TLPSs大大提高了CLA酯酶解的催化效率和选择性,因为高速搅拌为反应提供了更大的界面面积,并且通过将产物萃取到其他相中有效减少了产物抑制。此外,酶富集相(液体固定化载体)可有效、经济地重复使用 8 次以上,因为它含有超过 90% 的浓缩酶。因此,这种新型酶促酯化-水解方法可以被认为是生产高纯度脂肪酸单体的理想方法。