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学科主题生物工程
Monosugars from Enzymatic Hydrolysis of Corn Straw Pretreated by Ionic Liquids/N-Methylpyrrolidone Mixture Solution for Microbial Lipids Production
Xie HB(谢海波); Shen HW(沈宏伟); Gong ZW(龚志伟); Zhao ZB(赵宗保)
会议文集Programme & Abstracts
会议名称2nd International Conference on Green & Sustainable Chemistry
会议日期2011-11-14
2011
会议地点新加坡
页码63-0
出版者待补充
出版地待补充
合作性质分会特邀报告
部门归属1816
主办者新加坡国立化学研究所
英文摘要Increasing concerns about global warming and diminishing fossil fuel reserves have stimulated much effort to use (ligno)cellulose as an alternative to petroleum for the production of fuels and chemicals.1 The dissolution of (ligno)cellulose in ionic liquids (ILs) resulted in a full release of all the functional groups and bonds from the well-organized strong hydrogen bonding matrix, which have paved an environment-friendly and homogenous manner to use (ligno)cellulose. However, the traditional ILs process need high purity ILs and over-dried (ligno)cellulose for an efficient dissolution pre-treatment process, and it is also a time-consuming process.2 Recently, we found that the mixture solution of 20 mol% ionic liquids 1-methyl-3-ethyl-imidazolium acetate and NMP shows good solubility to (lingo)cellulosic materials. It was found that at 110 oC, 10 wt% of corn straw can be fully dissolved in 60 min. With the addition of anti solvents, such as methanol and ethanol, amorphous (lingo)cellulosic samples can be precipitated. Further submission of the regenerated sample for enzymatic hydrolysis demonstrated that they are high active for the digest of enzyme, and 72% yields of total reducing sugars is achieved after only 24 hours enzymatic hydrolysis. After removing the anti-solvents for the mixture by a retro evaporator, the mixture solvent system can be used for next pre-treatment process directly. The obtained monosugars solution can be submitted to the following microbial production of lipid process directly.3 In a word, our research demonstrated that a novel mixed solvent system shows better performance for (ligno)cellulose dissolution pretreatment than that of pure ionic liquids, and the utilization of high price ionic liquids is minimized, which presented an eco-environmentally friendly process for the conversion of agricultural waste into biodiesel.; Increasing concerns about global warming and diminishing fossil fuel reserves have stimulated much effort to use (ligno)cellulose as an alternative to petroleum for the production of fuels and chemicals.1 The dissolution of (ligno)cellulose in ionic liquids (ILs) resulted in a full release of all the functional groups and bonds from the well-organized strong hydrogen bonding matrix, which have paved an environment-friendly and homogenous manner to use (ligno)cellulose. However, the traditional ILs process need high purity ILs and over-dried (ligno)cellulose for an efficient dissolution pre-treatment process, and it is also a time-consuming process.2 Recently, we found that the mixture solution of 20 mol% ionic liquids 1-methyl-3-ethyl-imidazolium acetate and NMP shows good solubility to (lingo)cellulosic materials. It was found that at 110 oC, 10 wt% of corn straw can be fully dissolved in 60 min. With the addition of anti solvents, such as methanol and ethanol, amorphous (lingo)cellulosic samples can be precipitated. Further submission of the regenerated sample for enzymatic hydrolysis demonstrated that they are high active for the digest of enzyme, and 72% yields of total reducing sugars is achieved after only 24 hours enzymatic hydrolysis. After removing the anti-solvents for the mixture by a retro evaporator, the mixture solvent system can be used for next pre-treatment process directly. The obtained monosugars solution can be submitted to the following microbial production of lipid process directly.3 In a word, our research demonstrated that a novel mixed solvent system shows better performance for (ligno)cellulose dissolution pretreatment than that of pure ionic liquids, and the utilization of high price ionic liquids is minimized, which presented an eco-environmentally friendly process for the conversion of agricultural waste into biodiesel.
语种英语
文献类型会议论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/116043
专题中国科学院大连化学物理研究所
通讯作者Xie HB(谢海波); Zhao ZB(赵宗保)
推荐引用方式
GB/T 7714
Xie HB,Shen HW,Gong ZW,et al. Monosugars from Enzymatic Hydrolysis of Corn Straw Pretreated by Ionic Liquids/N-Methylpyrrolidone Mixture Solution for Microbial Lipids Production[C]. 待补充:待补充,2011:63-0.
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