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Amphiphilic Carbonaceous Microsphere‐Stabilized Oil‐in‐Water Pickering Emulsions and Their Applications in Enzyme Catalysis
Author(s) -
Liu Li,
Jiang Linlin,
Xie Xiaomin,
Yang Sen
Publication year - 2016
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201600127
Subject(s) - pickering emulsion , chemistry , emulsion , chemical engineering , hydrolysis , adsorption , catalysis , amphiphile , oil droplet , lipase , mass transfer , chromatography , particle size , phase (matter) , organic chemistry , enzyme , polymer , copolymer , engineering
An oil‐in‐water Pickering emulsion system stabilized by amphiphilic porous carbonaceous microspheres was prepared and successfully used in enzyme‐catalyzed hydrolysis. The control of the emulsion droplet size and size distribution were investigated by adjusting the particle content and the dispersed phase volume fraction. More than 99 % of the lipase was adsorbed at the interface of the emulsion droplets and showed excellent stability and activity. The size of the emulsion droplets exerted two opposite influences on the catalytic efficiency of the enzyme: increasing the rate of the process by providing a large interfacial area, thereby overcoming mass transfer limitations, and reducing the rate of the process by decreasing the interfacial enzyme concentration. A high hydrolysis yield (up to 100 %) was obtained after 2 h. This study shows the great potential and advantages of using an oil‐in‐water Pickering emulsion system for enzyme‐catalyzed reactions.