Evaluation of hot compressed water pretreatment and enzymatic saccharification of tulip tree sawdust using severity factors
| Autor: | Aye Aye Myint, Hun Wook Lee, Junho Yoon, Youn-Woo Lee, Dae Sung Kim |
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| Rok vydání: | 2013 |
| Předmět: |
Hot Temperature
Environmental Engineering Liriodendron Severity factor Lignocellulosic biomass Bioengineering macromolecular substances Raw material Lignin Hydrolysis chemistry.chemical_compound Cellulase Polysaccharides Organic chemistry Food science Cellulose Waste Management and Disposal Renewable Energy Sustainability and the Environment beta-Glucosidase Water Substrate (chemistry) General Medicine Hydrogen-Ion Concentration Wood Glucose chemistry visual_art visual_art.visual_art_medium Carbohydrate Metabolism Sawdust |
| Zdroj: | Bioresource Technology. 144:460-466 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2013.06.071 |
| Popis: | Tulip tree sawdust was pretreated using hot compressed water with different pretreatment severities (Log R 0 , 3.05–5.01) by varying reaction temperatures (180–220 °C) and residence time (1–30 min). It is found that the chemical composition and physicochemical properties of the pretreated products can be characterized and correlated with severity. Removal of most of the xylan and other hemicellulosic sugars from the raw material was observed at a severity of 4.5. Thus, the residual solids were recovered with increased cellulose and lignin contents. Nearly complete glucan conversion was achieved after 48 h of hydrolysis with 10 FPU/g of wet residual solid obtained above a severity of 4.8. The characteristics of the pretreated solids according to the pretreatment severity were strongly related with the glucose yield. The removal of structural barriers to the enzyme attack was the dominant factor affecting enzyme accessibility to the substrate. |
| Databáze: | OpenAIRE |
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