Jianming Guo1,2,3, Kaixuan Huang1,2,3, Rou Cao1,2,3, Junhua Zhang4, Yong Xu5,6,7. 1. Key Laboratory of Forestry Genetics & Biotechnology, Ministry of Education, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China. 2. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China. 3. Jiangsu Province Key Laboratory of Green Biomass-Based Fuels and Chemicals, Nanjing, 210037, People's Republic of China. 4. College of Forestry, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shanxi, People's Republic of China. 5. Key Laboratory of Forestry Genetics & Biotechnology, Ministry of Education, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China. xuyong@njfu.edu.cn. 6. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China. xuyong@njfu.edu.cn. 7. Jiangsu Province Key Laboratory of Green Biomass-Based Fuels and Chemicals, Nanjing, 210037, People's Republic of China. xuyong@njfu.edu.cn.
Abstract
BACKGROUND: Xylo-oligosaccharide is the spotlight of functional sugar that improves the economic benefits of lignocellulose biorefinery. Acetic acid acidolysis technology provides a promising application for xylo-oligosaccharide commercial production, but it is restricted by the aliphatic (wax-like) compounds, which cover the outer and inner surfaces of plants. RESULTS: We removed aliphatic compounds by extraction with two organic solvents. The benzene-ethanol extraction increased the yield of acidolyzed xylo-oligosaccharides of corncob, sugarcane bagasse, wheat straw, and poplar sawdust by 14.79, 21.05, 16.68, and 7.26% while ethanol extraction increased it by 11.88, 17.43, 1.26, and 13.64%, respectively. CONCLUSION: The single ethanol extraction was safer, more environmentally friendly, and more cost-effective than benzene-ethanol solvent. In short, organic solvent extraction provided a promising auxiliary method for the selective acidolysis of herbaceous xylan to xylo-oligosaccharides, while it had minimal impact on woody poplar.
BACKGROUND:Xylo-oligosaccharide is the spotlight of functional sugar that improves the economic benefits of lignocellulose biorefinery. Acetic acid acidolysis technology provides a promising application for xylo-oligosaccharide commercial production, but it is restricted by the aliphatic (wax-like) compounds, which cover the outer and inner surfaces of plants. RESULTS: We removed aliphatic compounds by extraction with two organic solvents. The benzene-ethanol extraction increased the yield of acidolyzed xylo-oligosaccharides of corncob, sugarcane bagasse, wheat straw, and poplar sawdust by 14.79, 21.05, 16.68, and 7.26% while ethanol extraction increased it by 11.88, 17.43, 1.26, and 13.64%, respectively. CONCLUSION: The single ethanol extraction was safer, more environmentally friendly, and more cost-effective than benzene-ethanol solvent. In short, organic solvent extraction provided a promising auxiliary method for the selective acidolysis of herbaceous xylan to xylo-oligosaccharides, while it had minimal impact on woody poplar.
Authors: Elias Pambou; Zongyi Li; Mario Campana; Arwel Hughes; Luke Clifton; Philipp Gutfreund; Jill Foundling; Gordon Bell; Jian R Lu Journal: J R Soc Interface Date: 2016-07 Impact factor: 4.118