One-pot chemo-enzymatic conversion of D-xylose to furfuralcohol by sequential dehydration with oxalic acid plus tin-based solid acid and bioreduction with whole-cells
| Autor: | Jun-Hua Di, Yu-Cai He, Xiao-Yu Huo, Xin-Xia Xue, Cui-Luan Ma |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Environmental Engineering
Oxalic acid chemistry.chemical_element Bioengineering Solid acid Xylose 010402 general chemistry Furfural 01 natural sciences Catalysis chemistry.chemical_compound medicine Humans Furaldehyde Dehydration Waste Management and Disposal chemistry.chemical_classification integumentary system 010405 organic chemistry Renewable Energy Sustainability and the Environment Oxalic Acid General Medicine medicine.disease 0104 chemical sciences chemistry Tin Yield (chemistry) Nuclear chemistry Organic acid |
| Zdroj: | Bioresource Technology. 268:292-299 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2018.07.152 |
| Popis: | In this study, organic acid could be used as co-catalyst for assisting solid acid SO42−/SnO2-argil to convert hemicellulose-derived D-xylose into furfural. The relationship between pKa of organic acid and turnover frequency (TOF) of co-catalysis with organic acid plus SO42−/SnO2-argil was explored on the conversion of D-xylose to furfural. Oxalic acid (pKa = 1.25) (0.35 wt%) was found to be the optimum co-catalyst for assisting SO42−/SnO2-argil (3.6 wt%) to synthesize furfural from D-xylose (20 g/L) at 180 °C for 20 min, and the furfural yield and TOF could be obtained at 57.07% and 6.26 h−1, respectively. Finally, the obtained furfural (107.6 mM) could be completely biotransformed to furfuralcohol by recombinant Escherichia coli CCZU-K14 whole-cells at 30 °C and pH 6.5 in the presence of 1.5 mol glucose/mol furfural and 400 mM D-xylose. Clearly, this strategy shows high potential application for the effective synthesis of furfuralcohol from biomass-derived D-xylose. |
| Databáze: | OpenAIRE |
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