Biorefining strategy for maximal monosaccharide recovery from three different feedstocks: Eucalyptus residues, wheat straw and olive tree pruning
| Autor: | Luís C. Duarte, César Fonseca, Talita Silva-Fernandes, Susana Marques, Maria C. Loureiro-Dias, Florbela Carvalheiro, Francisco M. Gírio |
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| Rok vydání: | 2015 |
| Předmět: |
Environmental Engineering
Eucalyptus residues Carbohydrates Wheat Straw Bioengineering Chemical Fractionation Lignin Trees chemistry.chemical_compound Hydrolysis Olea Enzymatic hydrolysis Monosaccharide Biorefining Cellulose Waste Management and Disposal Triticum Waste Products chemistry.chemical_classification Eucalyptus Xylose Chromatography Renewable Energy Sustainability and the Environment Monosaccharides Sulfuric acid General Medicine Straw Lignocellulosic biomass Biorefinery Kinetics Glucose Autohydrolysis chemistry Biochemistry Regression Analysis Olive residues Biotechnology |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 0960-8524 |
| Popis: | This work proposes the biorefining of eucalyptus residues (ER), wheat straw (WS) and olive tree pruning (OP) combining hydrothermal pretreatment (autohydrolysis) with acid post-hydrolysis of the liquid fraction and enzymatic hydrolysis of the solid fraction towards maximal recovery of monosaccharides from those lignocellulose materials. Autohydrolysis of ER, WS and OP was performed under non-isothermal conditions (195-230°C) and the non-cellulosic saccharides were recovered in the liquid fraction while cellulose and lignin remained in the solid fraction. The acid post-hydrolysis of the soluble oligosaccharides was studied by optimizing sulfuric acid concentration (1-4%w/w) and reaction time (10-60 min), employing a factorial (2(2)) experimental design. The solids resulting from pretreatment were submitted to enzymatic hydrolysis by applying commercial cellulolytic enzymes Celluclast® 1.5L and Novozyme® 188 (0.225 and 0.025 g/g solid, respectively). This strategy provides high total monosaccharide recovery or high glucose recovery from lignocellulosic materials, depending on the autohydrolysis conditions applied. |
| Databáze: | OpenAIRE |
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