Modified lignocellulose and rich starch for complete saccharification to maximize bioethanol in distinct polyploidy potato straw
| Autor: | Kanglu Zhao, Youmei Wang, Tao Xia, Meysam Madadi, Shang-wen Tang, Yanting Wang, Zhiyong Xiong, Guanhua Li, Nengzhou Jin, Zhijun Xu, Liangcai Peng, Zhi Qi |
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| Rok vydání: | 2020 |
| Předmět: |
Crops
Agricultural Polymers and Plastics Starch Biomass 02 engineering and technology Saccharomyces cerevisiae 010402 general chemistry 01 natural sciences Lignin Polyploidy Hydrolysis chemistry.chemical_compound Carbon assimilation Cellulase Bioenergy Materials Chemistry Dry matter Cellulose Solanum tuberosum Ethanol Organic Chemistry food and beverages Straw 021001 nanoscience & nanotechnology Pulp and paper industry 0104 chemical sciences chemistry Biofuel Biofuels Fermentation 0210 nano-technology |
| Zdroj: | Carbohydrate polymers. 265 |
| ISSN: | 1879-1344 |
| Popis: | Potato is a major food crop with enormous biomass straw, but lignocellulose recalcitrance causes a costly bioethanol conversion. Here, we selected the cytochimera (Cyt) potato samples showing significantly-modified lignocellulose and much increased soluble sugars and starch by 2–4 folds in mature straws. Under two pretreatments (8 min liquid hot water; 5% CaO) at minimized conditions, the potato Cyt straw showed complete enzymatic saccharification. Further performing yeast fermentation with all hexoses released from soluble sugars, starch and lignocellulose in the Cyt straw, this study achieved a maximum bioethanol yield of 24 % (% dry matter), being higher than those of other bioenergy crops as previously reported. Hence, this study has proposed a novel mechanism model on the reduction of major lignocellulose recalcitrance and regulation of carbon assimilation to achieve cost-effective bioethanol production under optimal pretreatments. This work also provides a sustainable strategy for utilization of potato straws with minimum waste release. |
| Databáze: | OpenAIRE |
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