Ionic liquid pretreatment as emerging approaches for enhanced enzymatic hydrolysis of lignocellulosic biomass
Ionic liquids (ILs) have been increasingly exploited as solvents and/or reagents in many applications due to their “green” properties as well as their tunable physicochemical and biological properties. One of them is the pretreatment of lignocellulosic biomass prior to enzymatic hydrolysis for bio...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Elsevier
2016
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/55884/ http://irep.iium.edu.my/55884/ http://irep.iium.edu.my/55884/ http://irep.iium.edu.my/55884/1/Journal%20BEJ.pdf http://irep.iium.edu.my/55884/7/55884-Ionic%20liquid%20pretreatment%20as%20emerging%20approaches%20for%20enhanced%20enzymatic%20hydrolysis%20of%20lignocellulosic%20biomass_SCOPUS.pdf http://irep.iium.edu.my/55884/13/55884_Ionic%20liquid%20pretreatment%20as%20emerging_WOS.pdf |
| Summary: | Ionic liquids (ILs) have been increasingly exploited as solvents and/or reagents in many applications
due to their “green” properties as well as their tunable physicochemical and biological properties. One
of them is the pretreatment of lignocellulosic biomass prior to enzymatic hydrolysis for bioenergy and
biomaterials production. Generally, the process composed of an IL pretreatment/recovered followed by
enzymatic hydrolysis of lignocellulosic biomass. Another approach was developed in which simultaneous
pretreatment and saccharification of biomass in ILs were performed. However, the use of ILs in this
integrated process, in which enzymatic hydrolysis is done in the presence of IL applied for biomass pretreatment,
can easily inactivate the enzymes. Cellulases, one of the most important hydrolytic enzymes
used to catalyze the polysaccharide, showed good levels of stability in many ILs. In addition, various
approaches were made including synthesis of enzyme-compatible ILs, screening ILs-tolerant enzymes
and media engineering to improve cellulases performance. In this review paper, recent advances of the
hydrolysis of lignocellulosic biomass in a single-step process in ILs will be highlighted. Various cellulase
stabilization approaches and the design of enzyme compatible biomass-dissolving ILs are also discussed.
We strongly believe that IL-compatible cellulase systems would eliminate the need to recover the regenerated
biomass and lead to a simple, in situ saccharification of cellulosic materials, which would be
beneficial in developing integrated bioprocesses. |
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