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Amphiphilic Carbonaceous Microsphere‐Stabilized Oil‐in‐Water Pickering Emulsions and Their Applications in Enzyme Catalysis

Amphiphilic Carbonaceous Microsphere‐Stabilized Oil‐in‐Water Pickering Emulsions and Their... 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png ChemPlusChem Wiley

Amphiphilic Carbonaceous Microsphere‐Stabilized Oil‐in‐Water Pickering Emulsions and Their Applications in Enzyme Catalysis

ChemPlusChem , Volume 81 (7) – Jul 1, 2016

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References (55)

Publisher
Wiley
Copyright
© 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
2192-6506
eISSN
2192-6506
DOI
10.1002/cplu.201600127
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

ChemPlusChemWiley

Published: Jul 1, 2016

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