Ethanol Fermentation of the Extraction Liquor From Water Prehydrolysis of Eucalyptus using Xylose-Fermenting Strain
The objective of the present work is to evaluate the potential of water prehydrolysis of Eucalyptus wood hemicelluloses(mainly xylan) for bioethanol production.A primary water hydrolysis treatment of Eucalyptus wood was performed before the cooking stage to extract part of the hemicelluloses that otherwise would be dissolved in the kraft liquor and burned.The components of the hydrolysates extracted under different conditions were analyzed, which showed that xylose was main component of the hydrolysates and xylose concentration of H160B reached 16.56 g/L.The xylose-fermenting strains, Pachysolen tannophilus ATCC 32691, Candida lusitaniae CICC 1461 and yeast SHY07-1 were used to evaluate fermentability of the hydrolysates and the yeast SHY07-1 displayed excellent xylose-fermenting ability.A highest ethanol concentration of 5.75 g/L was obtained in hydrolysate H 160B at 48 h, corresponding to an ethanol conversion of 0.33 g/g with an ethanol productivity of 0.12 g/(L h) and a fermentation efficiency of 71.57%.
Eucalyptus water prehydrolysis ethanol fermentation extraction liquor
Mingjun ZHU Zhisheng ZHU Qiumei ZHENG Zeng ZHANG Shizhong LIANG
School of Bioscience and Bioengineering, South China University of Technology Guangzhou, People”s Re State Key Laboratory of Pulp and Papermaking Engineering, South China University of Technology Guang
国内会议
北京
英文
391-395
2010-12-18（万方平台首次上网日期，不代表论文的发表时间）