Impact of bleaching on subcritical water- and Formosolv-pretreated tulip tree to enhance enzyme accessibility
| Autor: | In-Gyu Choi, Youn-Woo Lee, Joon Weon Choi, Dae Sung Kim, Aye Aye Myint, Junho Yoon, Hun Wook Lee |
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| Rok vydání: | 2013 |
| Předmět: |
Environmental Engineering
Liriodendron Bioengineering Chemical Fractionation engineering.material Lignin Bleaching Agents chemistry.chemical_compound Residue (chemistry) Cellulase Polysaccharides Enzymatic hydrolysis Botany medicine Hemicellulose Cellulose Hydrogen peroxide Waste Management and Disposal Renewable Energy Sustainability and the Environment Hydrolysis Pulp (paper) Hydrogen Peroxide General Medicine Pulp and paper industry Wood chemistry Biofuels visual_art engineering visual_art.visual_art_medium Sawdust Swelling medicine.symptom |
| Zdroj: | Bioresource Technology. 145:128-132 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2013.03.069 |
| Popis: | A novel method was developed for fractionating cellulose microfibrils from forest residue (tulip tree sawdust) to enhance cellulose digestibility, particularly at minimum enzyme loadings. This method involved three main stages: selective hemicellulose solubilization by subcritical water (SCW) pretreatment, delignification of the SCW-pretreated solids using the Formosolv process, and deformylation/bleaching of the cellulose pulp with alkaline hydrogen peroxide solution. This process produced nearly 98% white cellulose microfibrils with 23-fold higher conversion to glucose as compared to the raw substrate after 72 h of enzymatic hydrolysis. This study showed that cellulose swelling had the greatest effect on the enzymatic hydrolysis efficiency of delignified pulp obtained by the Formosolv process. |
| Databáze: | OpenAIRE |
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