Highly efficient ring-opening polymerization of epsilon-caprolactone catalyzed by a recombinant Escherichia coli whole-cell biocatalyst
文献类型：期刊论文
| 作者 | Li QS ; Li GQ ; Ma FQ ; Zhang ZM ; Zheng BS ; Feng Y |
| 刊名 | process biochemistry
 |
| 出版日期 | 2011 |
| 卷号 | 46期号:2页码:477-481 |
| 关键词 | POLYESTER SYNTHESIS LIPASE CUTINASE |
| ISSN号 | 1359-5113 |
| 通讯作者 | feng y |
| 中文摘要 | this paper discussed the use of a recombinant escherichia coli whole-cell biocatalyst harboring a thermophilic lipase gene from fervidobacterium nodosum in the catalytic synthesis of polyesters. the ring-opening polymerization of epsilon-caprolactone was used as a model reaction to study the effects of temperature and reaction medium on monomer conversion and the molecular weight of the product. the whole-cell biocatalyst displayed high catalytic activity at high temperatures (70-90 degrees c), with almost 100% monomer conversion. meanwhile, high monomer conversion values (>97%) were achieved in both hydrophobic and hydrophilic solvents, with the exception of dichloromethane (85%). poly(epsilon-caprolactone) was obtained in 100% monomer conversion, with a number-average molecular weight of 2000 g/mol and a polydispersity index of 1.47 in cyclohexane at 70 degrees c for 72 h. furthermore, the whole-cell biocatalyst exhibited excellent operational stability, with monomer conversion values exceeding 90% over the course of 10 batch reactions. to verify the practicality of the procedure, scale-up reaction was also performed with isolated yield and number-average molecular weight of ca. 70% and 2140 g/mol, respectively. (c) 2010 elsevier ltd. all rights reserved. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000287274000007 |
| 公开日期 | 2012-06-11 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/44855]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Li QS,Li GQ,Ma FQ,et al. Highly efficient ring-opening polymerization of epsilon-caprolactone catalyzed by a recombinant Escherichia coli whole-cell biocatalyst[J]. process biochemistry,2011,46(2):477-481. |
| APA | Li QS,Li GQ,Ma FQ,Zhang ZM,Zheng BS,&Feng Y.(2011).Highly efficient ring-opening polymerization of epsilon-caprolactone catalyzed by a recombinant Escherichia coli whole-cell biocatalyst.process biochemistry,46(2),477-481. |
| MLA | Li QS,et al."Highly efficient ring-opening polymerization of epsilon-caprolactone catalyzed by a recombinant Escherichia coli whole-cell biocatalyst".process biochemistry 46.2(2011):477-481. |
入库方式： OAI收割
来源：长春应用化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。