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Enhanced enzymatic hydrolysis of sugarcane bagasse by N-methylmorpholine-N-oxide pretreatment
Abstract
The cellulose dissolution solvent used in Lyocell process for cellulose fiber preparation, N-methylmorpholine-N-oxide (NMMO) monohydrate, was demonstrated to be an effective agent for sugarcane bagasse pretreatment. Bagasse of 20wt% was readily dissolved in NMMO monohydrate at 130 degrees C within 1h. After dissolution, bagasse could be regenerated by rapid precipitation with water as a porous and amorphous mixture of its original components. The regenerated bagasse exhibited a significant enhancement on enzymatic hydrolysis kinetic. Not only the reducing sugars releasing rate but also hydrolysis yield was enhanced at least twofold as compared with that of untreated bagasse. The cellulose fraction of regenerated bagasse was nearly hydrolyzed to glucose after 72h hydrolysis with Cellulase AP3. The recycled NMMO demonstrated the same performance as the fresh one on bagasse pretreatment for hydrolysis enhancement. The regenerated bagasse was directly used in simultaneous saccharification and fermentation (SSF) for ethanol production by Zymomonas mobilis. No negative effect on ethanol fermentation was observed and ethanol yield approximately 0.15 g ethanol/g baggasse was achieved.
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“This process uses toxic and highly flammable CS 2 and produces large amounts of waste products, which has fuelled the search for a more benign replacement.”
From Deconstruction of lignocellulosic biomass with ionic liquids (2013) · cites this paper as [65]
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Importance of chemical pretreatment for bioconversion of lignocellulosic biomass
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Metadata
- Authors
- Kuo, C.-H., & Lee, C.-K.
- Affiliations
- National Taiwan University of Science and Technology (TW)
- Corresponding author
- Lee, Cheng-Kang
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2009-01
- Volume
- 100
- Issue
- 2
- Pages
- 866-871
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2054175123
- Cited by
- 156
- References
- 23
- Citations by year
- 2025: 3 · 2024: 2 · 2023: 9 · 2022: 7 · 2021: 6 · 2020: 3 · 2019: 4 · 2018: 11 · 2017: 8 · 2016: 15 · 2015: 9 · 2014: 9 · 2013: 17 · 2012: 14
- FWCI
- 8.63
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
- Physical Sciences › Chemical Engineering › Catalysis › Catalysis for Biomass Conversion
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Anaerobic Digestion and Biogas Production
- Keywords
- sugarcane bagasse, N-methylmorpholine N-oxide, enzymatic hydrolysis, cellulose dissolution, reducing sugar release, hydrolysis yield, simultaneous saccharification and fermentation, ethanol production, Zymomonas mobilis
- MeSH terms
- Cellulose, Cyclic N-Oxides, Enzyme Activation, Hydrolysis, Morpholines, Substrate Specificity, Saccharum
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