Efficient bioconversion of crude glycerol from biodiesel to optically pure d-lactate by metabolically engineered Escherichia coli
文献情報
Kang-ming Tian, Dan-dan Niu, Govender Algasan, Suren Singh, Zheng-xiang Wang
Biodiesel has attracted considerable attention as one of the best choices among alternative and renewable fuels. Large quantities of crude glycerol are produced as a main co-product with increasing biodiesel production. Currently, the problem of waste glycerol utilization needs to be crucially addressed, not only for environmental protection but also for the economy of the biodiesel industry. In this paper, the use of crude glycerol for the production of D-lactate by engineered Escherichia coli was investigated. Engineered E. coli B0013-070 with a homolactic pathway for D-lactate synthesis by elimination of byproduct pathways (ethanol, succinate, formate and acetate) could convert 20 g L−1 of crude glycerol to 13.6 g L−1 of D-lactate with a yield of 0.67 g g−1 glycerol. Overexpression of D-lactate dehydrogenase by a low-copy vector in E. coli B0013-070 resulted in the increased production and yield of D-lactate, in which 14.5 g L−1 of D-lactate was produced with a yield of 0.72 g g−1 glycerol from crude glycerol. The effect of temperature on D-lactate fermentation by the engineered strain E. coli B0013-070-pTHldhA was also investigated, and 34 °C and 40 °C were found to be the optimal temperatures for cell growth and lactate production, respectively. The engineered strain B0013-070-pTHldhA produced 100.3 g L−1 of D-lactate with 99.97% optical purity from 531.5 g of crude glycerol with an overall productivity of 2.78 g L−1 h−1 and a yield of 75.4 g per 100 g glycerol (0.77 mol mol−1) using two phase fermentation combined with a temperature shifting strategy in a 7 L bioreactor. In summary, this paper shows that crude glycerol could be directly converted to D-lactate without any prior purification.
関連文献
Sequential sandwich immunoassay for simultaneous detection in trace samples using single-channel surface plasmon resonance
Yinqiang Xia, Peiqian Zhang, Hui Yuan, Renliang Huang, Zhimin He
DOI: 10.1039/C9AN01183H
Carbon dot-based inverse opal hydrogels with photoluminescence: dual-mode sensing of solvents and metal ions
Yuhua Zhu, Jianying Wang, Xiang Zhu, Jun Wang, Lijie Zhou, Jinhua Li, Tao Mei, Jingwen Qian, Lai Wei, Xianbao Wang
DOI: 10.1039/C9AN01287G
A highly selective and sensitive fluorescent sensor based on Tb3+-functionalized MOFs to determine arginine in urine: a potential application for the diagnosis of cystinuria
Ruixue Cui, Yongyan Wan, Guanfeng Ji, Zhiliang Liu
DOI: 10.1039/C9AN01204D
A Dean-flow-coupled interfacial viscoelastic fluid for microparticle separation applied in a cell smear method
Xin Shi, Liyan Liu, Wenfeng Cao, Guorui Zhu, Wei Tan
DOI: 10.1039/C9AN01070J
A highly sensitive and simply operated protease sensor toward point-of-care testing
Seonhwa Park, Yu Mi Shin, Jeongwook Seo, Ji-Joon Song, Haesik Yang
DOI: 10.1039/C6AN00251J
Re-designing ferritin nanocages for mercuric ion detection
Yingjie Wang, Hai Chen, Jiachen Zang, Xiuqing Zhang, Guanghua Zhao
DOI: 10.1039/C9AN01110B
A new colorimetric assay method for the detection of anti-hepatitis C virus antibody with high sensitivity
Wenxin Chai, Liu Shi, Hai Shi, Anzhi Sheng, Jie Yang
DOI: 10.1039/C9AN01466G
Multiplex isolation and profiling of extracellular vesicles using a microfluidic DICE device
Yoon-Tae Kang, Emma Purcell, Thomas Hadlock, Ting-Wen Lo, Anusha Mutukuri, Shruti Jolly, Sunitha Nagrath
DOI: 10.1039/C9AN01235D
こちらもおすすめ
2-ブロモ-9,9-ジフェニル-9H-フルオレンの主な用途は何ですか?
2-溴-9,9-二苯基芴は、医薬品、工業材料、有機合成の研究分野で応用されます。特に、レーザー材料や機能性ポリマーの合成に使用されることがあります。また、蛍光色...
四氯化铱の市場動向や研究トレンドはどうですか?
四氯化铱の市場は研究開発分野で注目されており、特にナノ技術や金属有機框架(MOFs)の分野での需要が増加傾向にあります。価格は安定しており、中国や韓国での生産が...
1-(4-溴-3-氟苯基)-2-氯乙酮を含む廃棄物はどのように処理すべきですか?
1-(4-溴-3-氟苯基)-2-氯乙酮 (CAS番号: 1260857-14-4) の廃棄物は専門的な廃棄処理が必要です。まず、廃棄物は密閉された容器に収集し、...
苦参酚Kとは何ですか?
苦参酚Kは、CAS番号101236-49-1を持つ化合物で、主に天然由来の生薬から抽出されます。この化合物は、抗炎症作用や抗癌作用を持つことが報告されています。
POTASSIUM (1-(TERTBUTOXYCARBONYL)AZETIDIN-3-YL)TRIFLUOROBORATE を含む廃棄物はどのように処理すべきですか?
POTASSIUM (1-(TERTBUTOXYCARBONYL)AZETIDIN-3-YL)TRIFLUOROBORATE を含む廃棄物は、まず安全なエント...
4-庚基-4’-联苯羧酸の市場動向や研究トレンドはどうですか?
4-庚基-4’-聯苯羧酸は、特殊化学品や合成化学の分野で用いられる化学物質ですが、市場動向としては、研究開発の進展とともに需要が増加しています。また、環境配慮型...
6-ブロモ-3-メトキシ-1-フェニル-1H-インドゾールを含む廃棄物はどのように処理すべきですか?
6-ブロモ-3-メトキシ-1-フェニル-1H-インドゾールを含む廃棄物は、適切な化学廃棄処理が必要です。通常、廃棄物は密閉容器に収集され、専門の廃棄処理業者に引...
4,4-二甲基-2-吡咯烷酮はどの業界で使用されていますか?
4,4-二甲基-2-吡咯烷酮は医薬、ポリマー、センサー、半導体などの業界で広く使用されています。特に溶媒としての性能が高く評価されています。
掲載誌
Green Chemistry

Green Chemistry provides a unique forum for the publication of innovative research on the development of alternative green and sustainable technologies. The scope of Green Chemistry is based on, but not limited to, the definition proposed by Anastas and Warner (Green Chemistry: Theory and Practice, P T Anastas and J C Warner, Oxford University Press, Oxford, 1998). Green chemistry is the utilisation of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. Green Chemistry is at the frontiers of this continuously-evolving interdisciplinary science and publishes research that attempts to reduce the environmental impact of the chemical enterprise by developing a technology base that is inherently non-toxic to living things and the environment. Submissions on all aspects of research relating to the endeavour are welcome. The journal publishes original and significant cutting-edge research that is likely to be of wide general appeal. To be published, work must present a significant advance in green chemistry. Papers must contain a comparison with existing methods and demonstrate advantages over those methods before publication can be considered. For more information please see this Editorial. Coverage includes the following, but is not limited to: Design (e.g. biomimicry, design for degradation/recycling/reduced toxicity…) Reagents & Feedstocks (e.g. renewables, CO2, solvents, auxiliary agents, waste utilization…) Synthesis (e.g. organic, inorganic, synthetic biology…) Catalysis (e.g. homogeneous, heterogeneous, enzyme, whole cell…) Process (e.g. process design, intensification, separations, recycling, efficiency…) Energy (e.g. renewable energy, fuels, photovoltaics, fuel cells, energy storage, energy carriers…) Applications (e.g. electronics, dyes, consumer products, coatings, pharmaceuticals, preservatives, building materials, chemicals for industry/agriculture/mining…) Impact (e.g. safety, metrics, LCA, sustainability, (eco)toxicology…) Green chemistry is, by definition, a continuously-evolving frontier. Therefore, the inclusion of a particular material or technology does not, of itself, guarantee that a paper is suitable for the journal. To be suitable, the novel advance should have the potential for reduced environmental impact relative to the state of the art. Green Chemistry does not normally deal with research associated with 'end-of-pipe' or remediation issues.














