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Issue 11, 2011
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Green fluorescent protein as a screen for enzymatic activity in ionic liquid–aqueous systems for in situhydrolysis of lignocellulose

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Abstract

A rapid screen was developed to test the stability of proteins in ionic liquid–aqueous mixtures using green fluorescent protein (GFP) as a reporter. In at least one ionic liquid (IL), GFP retained 50% or more of its fluorescence in IL volume fractions as high as 75%. ILs that best preserved GFP fluorescence also showed the best retention of cellulase activity. Using this screen, two potential candidates for in situ enzymatic hydrolysis of biomass, 1,3-dimethylimidazolium dimethylphosphate (Mmim DMP) and 1-ethyl-3-methylimidazolium (Emim) lactate, were identified. A commercial Trichoderma reeseicellulase mixture retained activity in both ILs up to 40% (w/w) IL, and β-glucosidase remained active after incubation in 60% (w/w) Mmim DMP for 8 h, indicating the possibility of in situ cellulose hydrolysis in IL–water mixtures.

Graphical abstract: Green fluorescent protein as a screen for enzymatic activity in ionic liquid–aqueous systems for in situ hydrolysis of lignocellulose

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Article information


Submitted
14 Jun 2011
Accepted
10 Sep 2011
First published
05 Oct 2011

Green Chem., 2011,13, 3107-3110
Article type
Communication

Green fluorescent protein as a screen for enzymatic activity in ionic liquid–aqueous systems for in situ hydrolysis of lignocellulose

P. W. Wolski, D. S. Clark and H. W. Blanch, Green Chem., 2011, 13, 3107
DOI: 10.1039/C1GC15691H

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