TY - GEN
T1 - Accelerating the enzymatic hydrolysis of cellulosic materials through regenerating them from ionic liquids
AU - Zhao, Hua
AU - Jones, Cecil L.
AU - Baker, Gary A.
AU - Song, Zhiyan
AU - Olubajo, Olarongbe
AU - Person, Vernecia
PY - 2008
Y1 - 2008
N2 - The efficient production of fuel ethanol from lignocellulosic materials is one of the research priorities in the field of renewable energy. The enzymatic hydrolysis of cellulosic substrates usually suffers from slow reaction rates and high costs. The pretreatment of lignocelluloses is known as the key to a fast enzymatic hydrolysis of cellulose. Recently, a new type of non-volatile solvents, named ionic liquids (ILs), was found capable of dissolving more than 10% (wt) cellulose, xylan or lignin. In this study, several chloride and acetate-based ILs were investigated in dissolving and regenerating lignocelluloses. The regenerated biopolymers exhibited much lower crystallinity than untreated ones as confirmed by the infrared spectra, and higher accessible surfaces as suggested by the cellulase adsorption isotherm. As a result, the enzymatic hydrolysis rates of cellulosic substrates were much faster than those of untreated samples. The yields of both glucose and xylose from regenerated lignocelluloses were much higher than those from untreated ones. These preliminary results suggest that the IL-pretreatment of lignocelluloses could be an effective and less-polluting method for accelerating the enzyme hydrolysis of cellulosic substrates.
AB - The efficient production of fuel ethanol from lignocellulosic materials is one of the research priorities in the field of renewable energy. The enzymatic hydrolysis of cellulosic substrates usually suffers from slow reaction rates and high costs. The pretreatment of lignocelluloses is known as the key to a fast enzymatic hydrolysis of cellulose. Recently, a new type of non-volatile solvents, named ionic liquids (ILs), was found capable of dissolving more than 10% (wt) cellulose, xylan or lignin. In this study, several chloride and acetate-based ILs were investigated in dissolving and regenerating lignocelluloses. The regenerated biopolymers exhibited much lower crystallinity than untreated ones as confirmed by the infrared spectra, and higher accessible surfaces as suggested by the cellulase adsorption isotherm. As a result, the enzymatic hydrolysis rates of cellulosic substrates were much faster than those of untreated samples. The yields of both glucose and xylose from regenerated lignocelluloses were much higher than those from untreated ones. These preliminary results suggest that the IL-pretreatment of lignocelluloses could be an effective and less-polluting method for accelerating the enzyme hydrolysis of cellulosic substrates.
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M3 - Conference contribution
AN - SCOPUS:77955910374
SN - 9780841269941
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers
T2 - 236th National Meeting and Exposition of the American Chemical Society, ACS 2008
Y2 - 17 August 2008 through 21 August 2008
ER -