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Microbe Endures Ionic Liquids, May Lead to Efficient Biofuel Production Process

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A joint team of scientists have identified and determined how a tropical rainforest microbe is able to endure high concentrations of an ionic liquid used to dissolve cellulosic biomass. Their discovery may provide a basis for engineering ionic liquid tolerance into strains of fuel-producing microbes for a more efficient biofuel production process.

In the search for technology by which economically competitive biofuels can be produced from cellulosic biomass, the combination of sugar-fermenting microbes and ionic liquid solvents looks to be a winner save for one major problem: the ionic liquids used to make cellulosic biomass more digestible for microbes can also be toxic to them. A solution to this conundrum, however, may be in the offing.

Researchers with the U.S. Department of Energy (DOE)’s Joint BioEnergy Institute (JBEI), a multi-institutional partnership led by Berkeley Lab, have identified a tropical rainforest microbe that can endure relatively high concentrations of an ionic liquid used to dissolve cellulosic biomass. The researchers have also determined how the microbe is able to do this, a discovery that holds broad implications beyond the production of advanced biofuels.
 
 

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