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Abstract
In this paper, a novel method for the construction of colloidosomes as a microreactor for dual-enzyme cascade biphasic reaction has been reported. A lipase-glucose oxidase (GOx) enzyme pair is employed in this system. A water-soluble enzyme GOx is compartmentalized inside the colloidosomes. A hydrophobic environment-favored enzyme Candida Antarctica lipase B (CalB) is adsorbed on the outer surfaces of the colloidosomes. The catalysis system is set up by introducing these dual-enzyme-immobilized microcapsules into acetic ether. H2O2 is produced in the aqueous phase by the doped GOx, and then H2O2 diffused out of the microcapsules is utilized by CalB to catalyze the oxidation of ethyl acetate. Finally, the formed peracids oxidized N-heteroaromatic in situ. Furthermore, no obvious yield decline is observed in four reaction cycles. Thus, our work provides a new strategy for the design of high-performance biomimicking reactors for multiple enzyme cascade reactions and further expands the potential application area of colloidosomes.
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