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Seveso A, Mazurkewich S, Banerjee S, Poulsen JCN, Lo Leggio L, Larsbrink J. Polysaccharide utilization loci from Bacteroidota encode CE15 enzymes with possible roles in cleaving pectin-lignin bonds. Appl Environ Microbiol 2024; 90:e0176823. [PMID: 38179933 PMCID: PMC10807430 DOI: 10.1128/aem.01768-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 11/23/2023] [Indexed: 01/06/2024] Open
Abstract
Lignocellulose is a renewable but complex material exhibiting high recalcitrance to enzymatic hydrolysis, which is attributed, in part, to the presence of covalent linkages between lignin and polysaccharides in the plant cell wall. Glucuronoyl esterases from carbohydrate esterase family 15 (CE15) have been proposed as an aid in reducing this recalcitrance by cleaving ester bonds found between lignin and glucuronoxylan. In the Bacteroidota phylum, some species organize genes related to carbohydrate metabolism in polysaccharide utilization loci (PULs) which encode all necessary proteins to bind, deconstruct, and respond to a target glycan. Bioinformatic analyses identified CE15 members in some PULs that appear to not target the expected glucuronoxylan. Here, five CE15 members from such PULs were investigated with the aim of gaining insights on their biological roles. The selected targets were characterized using glucuronoyl esterase model substrates and with a new synthetic molecule mimicking a putative ester linkage between pectin and lignin. The CE15 enzyme from Phocaeicola vulgatus was structurally determined by X-ray crystallography both with and without carbohydrate ligands with galacturonate binding in a distinct conformation than that of glucuronate. We further explored whether these CE15 enzymes could act akin to pectin methylesterases on pectin-rich biomass but did not find evidence to support the proposed activity. Based on the evidence gathered, the CE15 enzymes in the PULs expected to degrade pectin could be involved in cleavage of uronic acid esters in rhamnogalacturonans.IMPORTANCEThe plant cell wall is a highly complex matrix, and while most of its polymers interact non-covalently, there are also covalent bonds between lignin and carbohydrates. Bonds between xylan and lignin are known, such as the glucuronoyl ester bonds that are cleavable by CE15 enzymes. Our work here indicates that enzymes from CE15 may also have other activities, as we have discovered enzymes in PULs proposed to target other polysaccharides, including pectin. Our study represents the first investigation of such enzymes. Our first hypothesis that the enzymes would act as pectin methylesterases was shown to be false, and we instead propose that they may cleave other esters on complex pectins such as rhamnogalacturonan II. The work presents both the characterization of five novel enzymes and can also provide indirect information about the components of the cell wall itself, which is a highly challenging material to chemically analyze in fine detail.
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Affiliation(s)
- Andrea Seveso
- Wallenberg Wood Science Center, Division of Industrial Biotechnology, Department of Life Sciences, Chalmers University of Technology, Gothenburg, Sweden
| | - Scott Mazurkewich
- Wallenberg Wood Science Center, Division of Industrial Biotechnology, Department of Life Sciences, Chalmers University of Technology, Gothenburg, Sweden
| | - Sanchari Banerjee
- Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | | | - Leila Lo Leggio
- Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - Johan Larsbrink
- Wallenberg Wood Science Center, Division of Industrial Biotechnology, Department of Life Sciences, Chalmers University of Technology, Gothenburg, Sweden
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Park C, Jang ES, Kim YM. The temperature effect on the production of liquid and solid fuel via wood pellet torrefaction. KOREAN J CHEM ENG 2023. [DOI: 10.1007/s11814-022-1305-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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3
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Zhang L, Jiang Z, Tsui TH, Loh KC, Dai Y, Tong YW. A Review on Enhancing Cupriavidus necator Fermentation for Poly(3-hydroxybutyrate) (PHB) Production From Low-Cost Carbon Sources. Front Bioeng Biotechnol 2022; 10:946085. [PMID: 35928944 PMCID: PMC9343952 DOI: 10.3389/fbioe.2022.946085] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 06/20/2022] [Indexed: 11/13/2022] Open
Abstract
In the context of a circular economy, bioplastic production using biodegradable materials such as poly(3-hydroxybutyrate) (PHB) has been proposed as a promising solution to fundamentally solve the disposal issue of plastic waste. PHB production techniques through fermentation of PHB-accumulating microbes such as Cupriavidus necator have been revolutionized over the past several years with the development of new strategies such as metabolic engineering. This review comprehensively summarizes the latest PHB production technologies via Cupriavidus necator fermentation. The mechanism of the biosynthesis pathway for PHB production was first assessed. PHB production efficiencies of common carbon sources, including food waste, lignocellulosic materials, glycerol, and carbon dioxide, were then summarized and critically analyzed. The key findings in enhancing strategies for PHB production in recent years, including pre-treatment methods, nutrient limitations, feeding optimization strategies, and metabolism engineering strategies, were summarized. Furthermore, technical challenges and future prospects of strategies for enhanced production efficiencies of PHB were also highlighted. Based on the overview of the current enhancing technologies, more pilot-scale and larger-scale tests are essential for future implementation of enhancing strategies in full-scale biogas plants. Critical analyses of various enhancing strategies would facilitate the establishment of more sustainable microbial fermentation systems for better waste management and greater efficiency of PHB production.
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Affiliation(s)
- Le Zhang
- NUS Environmental Research Institute, National University of Singapore, Singapore, Singapore
- Energy and Environmental Sustainability for Megacities (E2S2) Phase II, Campus for Research Excellence and Technological Enterprise (CREATE), Singapore, Singapore
| | - Zicheng Jiang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
| | - To-Hung Tsui
- NUS Environmental Research Institute, National University of Singapore, Singapore, Singapore
- Energy and Environmental Sustainability for Megacities (E2S2) Phase II, Campus for Research Excellence and Technological Enterprise (CREATE), Singapore, Singapore
| | - Kai-Chee Loh
- Energy and Environmental Sustainability for Megacities (E2S2) Phase II, Campus for Research Excellence and Technological Enterprise (CREATE), Singapore, Singapore
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
| | - Yanjun Dai
- Energy and Environmental Sustainability for Megacities (E2S2) Phase II, Campus for Research Excellence and Technological Enterprise (CREATE), Singapore, Singapore
- School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yen Wah Tong
- NUS Environmental Research Institute, National University of Singapore, Singapore, Singapore
- Energy and Environmental Sustainability for Megacities (E2S2) Phase II, Campus for Research Excellence and Technological Enterprise (CREATE), Singapore, Singapore
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
- *Correspondence: Yen Wah Tong,
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Critical Review on Polylactic Acid: Properties, Structure, Processing, Biocomposites, and Nanocomposites. MATERIALS 2022; 15:ma15124312. [PMID: 35744371 PMCID: PMC9228835 DOI: 10.3390/ma15124312] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/20/2022] [Accepted: 05/26/2022] [Indexed: 12/20/2022]
Abstract
Composite materials are emerging as a vital entity for the sustainable development of both humans and the environment. Polylactic acid (PLA) has been recognized as a potential polymer candidate with attractive characteristics for applications in both the engineering and medical sectors. Hence, the present article throws lights on the essential physical and mechanical properties of PLA that can be beneficial for the development of composites, biocomposites, films, porous gels, and so on. The article discusses various processes that can be utilized in the fabrication of PLA-based composites. In a later section, we have a detailed discourse on the various composites and nanocomposites-based PLA along with the properties’ comparisons, discussing our investigation on the effects of various fibers, fillers, and nanofillers on the mechanical, thermal, and wear properties of PLA. Lastly, the various applications in which PLA is used extensively are discussed in detail.
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Kang SB, Choi JI. Production of Cadaverine in Recombinant Corynebacterium glutamicum Overexpressing Lysine Decarboxylase (ldcC) and Response Regulator dr1558. Appl Biochem Biotechnol 2022; 194:1013-1024. [PMID: 34529230 DOI: 10.1007/s12010-021-03685-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 09/08/2021] [Indexed: 11/30/2022]
Abstract
In this study, the response regulator DR1558 from Deinococcus radiodurans was overexpressed in recombinant Corynebacterium glutamicum with lysine decarboxylase (ldcC). The recombinant C. glutamicum strain overexpressing dr1558 and ldcC produced 5.9 g/L of cadaverine by flask cultivation, whereas the control strain overexpressing only ldcC produced 4.5 g/L of cadaverine. To investigate the mechanism underlying the effect of DR1558, the expression levels of genes related to central metabolism and lysine-biosynthesis were analyzed by quantitative-real time polymerase chain reaction. The results showed that phosphoenolpyruvate carboxykinase (pck) was downregulated, and pyruvate kinase (pyk) and other lysine biosynthesis genes were upregulated. Furthermore, in fed-batch fermentation, C. glutamicum coexpressing dr1558 produced 25.14 g/L of cadaverine, a 1.25-fold increase in concentration relative to the control. These results suggested that the heterologous expression of dr1558 may improve the production of biorefinery products by recombinant C. glutamicum.
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Affiliation(s)
- Soong-Bin Kang
- Department of Biotechnology and Bioengineering, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Jong-Il Choi
- Department of Biotechnology and Bioengineering, Chonnam National University, Gwangju, 61186, Republic of Korea.
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Bai Y, Liu Y, Bai F, Sun Q, Li L, Zhang T. Conversion of furfuryl alcohol to ethyl levulinate in the presence of mesoporous aluminosilicate catalyst. OPEN CHEM 2021. [DOI: 10.1515/chem-2021-0121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
The one-pot acid-catalyzed the conversion of furfuryl alcohol (FA) to ethyl levulinate (EL) was investigated in the presence of mesoporous aluminosilicate (TUD-1) with a high surface area (up to 579 m2 g−1) and well-interconnected mesospheres synthesized via a solvothermal process and characterized using scanning electron microscope, transmission electron microscope, X-ray diffraction, 27Al-NMR, and N2 sorption isotherm. The resulting solid acid catalyst was tested for the alcoholysis of FA with ethanol, affording 87.8% EL yield under the optimal reaction conditions of 120°C and 4 h. Moreover, the catalyst showed a good reusability with less loss of activity after a simple solvent washing and calcination procedure.
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Affiliation(s)
- Yuli Bai
- Dalian Research Institute of Petroleum and Petrochemicals, Sinopec , Dalian , China
| | - Yi Liu
- Dalian Research Institute of Petroleum and Petrochemicals, Sinopec , Dalian , China
| | - Fudong Bai
- Dalian Research Institute of Petroleum and Petrochemicals, Sinopec , Dalian , China
| | - Qimei Sun
- Dalian Research Institute of Petroleum and Petrochemicals, Sinopec , Dalian , China
| | - Lanpeng Li
- Dalian Research Institute of Petroleum and Petrochemicals, Sinopec , Dalian , China
| | - Tong Zhang
- Dalian Research Institute of Petroleum and Petrochemicals, Sinopec , Dalian , China
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Palmieri S, Tittarelli F, Sabbatini S, Cespi M, Bonacucina G, Eusebi AL, Fatone F, Stipa P. Effects of different pre-treatments on the properties of polyhydroxyalkanoates extracted from sidestreams of a municipal wastewater treatment plant. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 801:149633. [PMID: 34467906 DOI: 10.1016/j.scitotenv.2021.149633] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/29/2021] [Accepted: 08/09/2021] [Indexed: 06/13/2023]
Abstract
The paper deals with effects of two different widespread extraction methods (conventional extraction and Soxhlet extraction) and four different pre-treatments (homogenization with pressure and with blades, sonication, and impact with glass spheres) on the extraction yields and properties of polyhydroxyalkanoate (PHA) extracted from biomass coming from an innovative process (short-cut enhanced phosphorus and PHA recovery) applied in a real wastewater treatment plant. The results show that the two different extraction processes affected the crystallization degree and the chemical composition of the polymer. On the other hand, the extractive yield was highly influenced by pre-treatments: homogenization provided a 15% more extractive yield than the others. Homogenization, especially at high pressure, proved to be the best pre-treatment also in terms of the purity, visual appearance (transparency and clearness), thermal stability, and mechanical performances of the obtained PHA films. All the PHA films begin to melt long before their degradation temperature (Td > 200 °C): this allows their use in the fields of extrusion or compression moulding. SYNOPSIS: Optimizing the extraction of PHAs from municipal wastewater gives a double beneficial environmental impact: wastewater treatment and circular bio-based carbon upgrade to biopolymers for the production of bioplastics and other intersectoral applications.
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Affiliation(s)
- S Palmieri
- Department of Science and Engineering of Materials, Environment and Urban Planning - SIMAU, Università Politecnica delle Marche, INSTM Research Unit, Via Brecce Bianche 12, 60131 Ancona, Italy.
| | - F Tittarelli
- Department of Science and Engineering of Materials, Environment and Urban Planning - SIMAU, Università Politecnica delle Marche, INSTM Research Unit, Via Brecce Bianche 12, 60131 Ancona, Italy; Institute of Atmospheric Sciences and Climate, National Research Council (ISAC-CNR), Bologna 40129, Italy.
| | - S Sabbatini
- Department of Science and Engineering of Materials, Environment and Urban Planning - SIMAU, Università Politecnica delle Marche, INSTM Research Unit, Via Brecce Bianche 12, 60131 Ancona, Italy.
| | - M Cespi
- Department of Chemical Sciences, University of Camerino, via S. Agostino 1, 62032 Camerino, Italy.
| | - G Bonacucina
- Department of Chemical Sciences, University of Camerino, via S. Agostino 1, 62032 Camerino, Italy.
| | - A L Eusebi
- Department of Science and Engineering of Materials, Environment and Urban Planning - SIMAU, Università Politecnica delle Marche, INSTM Research Unit, Via Brecce Bianche 12, 60131 Ancona, Italy.
| | - F Fatone
- Department of Science and Engineering of Materials, Environment and Urban Planning - SIMAU, Università Politecnica delle Marche, INSTM Research Unit, Via Brecce Bianche 12, 60131 Ancona, Italy.
| | - P Stipa
- Department of Science and Engineering of Materials, Environment and Urban Planning - SIMAU, Università Politecnica delle Marche, INSTM Research Unit, Via Brecce Bianche 12, 60131 Ancona, Italy.
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Recent progress in metabolic engineering of Corynebacterium glutamicum for the production of C4, C5, and C6 chemicals. KOREAN J CHEM ENG 2021. [DOI: 10.1007/s11814-021-0788-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hoşgün EZ, Biran Ay S, Bozan B. Effect of sequential pretreatment combinations on the composition and enzymatic hydrolysis of hazelnut shells. Prep Biochem Biotechnol 2020; 51:570-579. [PMID: 33103953 DOI: 10.1080/10826068.2020.1836657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Hazelnut shells, a high lignin containing biomass, were subjected to individual and sequential liquid hot water (LHW), alkaline (AP) and dilute acid pretreatments (DAP). Among the single pretreatments, LHW demonstrated the highest cellulose recovery of 98.1%, DAP resulted in the highest hemicellulose solubilization of 56.0%, and AP of the highest lignin removal of 49.6%. Employing two-step pretreatment on hazelnut shells, in general, demonstrated an enhanced action of the second pretreatment; therefore, the sequence of the pretreatment methods had a significant impact on both substrate characteristics and enzymatic hydrolysis efficiency of biomass. In terms of delignification, AP-LHW achieved 60.7% lignin removal, while LHW-DAP showed the highest hemicellulose removal of 93.8% and DAP-LHW resulted in the highest cellulose recovery of 94.0%. Structural properties of raw and pretreated hazelnut shells were observed by FTIR. The maximum glucose recovery of 54.9% was observed in DAP-LHW pretreated samples. For this pretreatment combination, almost 1.8 MJ total energy was required to recover 10.2 g glucose. The findings indicated that complete removal of the physical barrier of lignin and hemicellulose might not be essential; partial relocation of lignin and alteration of cellulose structure may also be efficient in increasing the sugar recovery from the lignocellulosic biomass.
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Affiliation(s)
- Emir Zafer Hoşgün
- Department of Chemical Engineering, Faculty of Engineering, Eskişehir Technical University, Eskişehir, Turkey
| | - Suzan Biran Ay
- Department of Chemical Engineering, Faculty of Engineering, Eskişehir Technical University, Eskişehir, Turkey
| | - Berrin Bozan
- Department of Chemical Engineering, Faculty of Engineering, Eskişehir Technical University, Eskişehir, Turkey
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Xu Y, Zhou D, Luo R, Yang X, Wang B, Xiong X, Shen W, Wang D, Wang Q. Metabolic engineering of Escherichia coli for polyamides monomer δ-valerolactam production from feedstock lysine. Appl Microbiol Biotechnol 2020; 104:9965-9977. [PMID: 33064187 DOI: 10.1007/s00253-020-10939-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 09/06/2020] [Accepted: 10/01/2020] [Indexed: 01/03/2023]
Abstract
Nylon 5 and nylon 6,5 are recently explored as new commercial polyamides, of which the monomer includes δ-valerolactam. In this study, a novel catalytic activity of lysine 2-monooxygenase (DavB) was explored to produce δ-valerolactam from L-pipecolic acid (L-PA), functioning as oxidative decarboxylase on a cyclic compound. Recombinant Escherichia coli BS01 strain expressing DavB from Pseudomonas putida could synthesize δ-valerolactam from L-pipecolic acid with a concentration of 90.3 mg/L. Through the co-expression of recombinant apoptosis-inducing protein (rAIP) from Scomber japonicus, glucose dehydrogenase (GDH) from Bacillus subtilis, Δ1-piperideine-2-carboxylae reductase (DpkA) from P. putida and lysine permease (LysP) from E. coli with DavB, δ-valerolactam was produced with the highest concentration of 242 mg/L. α-Dioxygenases (αDox) from Oryza sativa could act as a similar catalyst on L-pipecolic acid. A novel δ-valerolactam synthesis pathway was constructed entirely via microbial conversion from feedstock lysine in this study. Our system has great potential in the development of a bio-nylon production process. KEY POINTS: • DavB performs as an oxidative decarboxylase on L-PA with substrate promiscuity. • Strain with rAIP, GDH, DpkA, LysP, and DavB coexpression could produce δ-valerolactam. • This is the first time to obtain valerolactam entirely via biosynthesis from lysine.
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Affiliation(s)
- Yanqin Xu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, Chongqing University, Chongqing, 401331, People's Republic of China
| | - Dan Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, Chongqing University, Chongqing, 401331, People's Republic of China
| | - Ruoshi Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, Chongqing University, Chongqing, 401331, People's Republic of China
| | - Xizhi Yang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, Chongqing University, Chongqing, 401331, People's Republic of China
| | - Baosheng Wang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, Chongqing University, Chongqing, 401331, People's Republic of China
| | - Xiaochao Xiong
- Department of Biological Systems Engineering, Washington State University, Pullman, WA, 99164-6120, USA
| | - Weifeng Shen
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, Chongqing University, Chongqing, 401331, People's Republic of China
| | - Dan Wang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, Chongqing University, Chongqing, 401331, People's Republic of China.
| | - Qinhong Wang
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, People's Republic of China.
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Energy optimization of Multiple Stage Evaporator system using Water Cycle Algorithm. Heliyon 2020; 6:e04349. [PMID: 32685713 PMCID: PMC7355987 DOI: 10.1016/j.heliyon.2020.e04349] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 04/11/2020] [Accepted: 06/25/2020] [Indexed: 11/21/2022] Open
Abstract
Black liquor, a residual stream from the Kraft recovery process of paper mills is an incipient biomass energy resource which finds prospective biofuel-based industrial applications to ensure process self-sufficiency and sustainability. Black liquor is concentrated using Multiple Stage Evaporator, the utmost energy intensive unit, before using it as biofuel. Pertaining to the contemporary global energy scenario, improvement in energy efficiency of Multiple Stage Evaporator becomes indispensable. The present work investigates the non-linear modeling and simulation-based optimization of Heptads' stage based Multiple Stage Evaporator in backward feed flow configuration integrated with various energy saving strategies. A novel metaheuristic approach, Water Cycle Algorithm has been employed to search the optimum estimates of unknown process variables and therefore, the optimum energy efficiency parameters. The optimization results demonstrate the efficiency of Water Cycle Algorithm in screening the most appropriate operating strategy, i.e., hybrid model of all energy saving strategies (steam-split, feed-split and feed-preheating) with optimum energy efficiency i.e. Steam Economy of 7.092 and Steam Consumption of 1.919 kg/s. Moreover, a comparative analysis of the results with previous literature and real-time plant estimates reveal that the hybrid model offers improvement of 52.84% in Steam Economy and reduction in Steam Consumption by 28.13% when compared to the real plant data.
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Biosynthesis of polyhydroxyalkanoates from sucrose by metabolically engineered Escherichia coli strains. Int J Biol Macromol 2020; 149:593-599. [DOI: 10.1016/j.ijbiomac.2020.01.254] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 01/23/2020] [Accepted: 01/25/2020] [Indexed: 02/07/2023]
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Park SH, Sohn YJ, Park SJ, Choi JI. Effect of DR1558, a Deinococcus radiodurans response regulator, on the production of GABA in the recombinant Escherichia coli under low pH conditions. Microb Cell Fact 2020; 19:64. [PMID: 32156293 PMCID: PMC7063819 DOI: 10.1186/s12934-020-01322-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 03/01/2020] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Gamma aminobutyric acid (GABA) is an important platform chemical, which has been used as a food additive and drug. Additionally, GABA is a precursor of 2-pyrrolidone, which is used in nylon synthesis. GABA is usually synthesized from glutamate in a reaction catalyzed by glutamate decarboxylase (GAD). Currently, there are several reports on GABA production from monosodium glutamate (MSG) or glucose using engineered microbes. However, the optimal pH for GAD activity is 4, which is the limiting factor for the efficient microbial fermentative production of GABA as fermentations are performed at pH 7. Recently, DR1558, a response regulator in the two-component signal transduction system was identified in Deinococcus radiodurans. DR1558 is reported to confer cellular robustness to cells by binding the promoter regions of genes via DNA-binding domains or by binding to the effector molecules, which enable the microorganisms to survive in various environmental stress conditions, such as oxidative stress, high osmotic shock, and low pH. RESULTS In this study, the effect of DR1558 in enhancing GABA production was examined using two different strategies: whole-cell bioconversion of GABA from MSG and direct fermentative production of GABA from glucose under acidic culture conditions. In the whole-cell bioconversion, GABA produced by E. coli expressing GadBC and DR1558 (6.52 g/L GABA from 13 g/L MSG·H2O) in shake flask culture at pH 4.5 was 2.2-fold higher than that by E. coli expressing only GadBC (2.97 g/L of GABA from 13 g/L MSG·H2O). In direct fermentative production of GABA from glucose, E. coli ∆gabT expressing isocitrate dehydrogenase (IcdA), glutamate dehydrogenase (GdhA), GadBC, and DR1558 produced 1.7-fold higher GABA (2.8 g/L of GABA from 30 g/L glucose) than E. coli ∆gabT expressing IcdA, GdhA, and GadBC (1.6 g/L of GABA from 30 g/L glucose) in shake flask culture at an initial pH 7.0. The transcriptional analysis of E. coli revealed that DR1558 conferred acid resistance to E. coli during GABA production. The fed-batch fermentation of E. coli expressing IcdA, GdhA, GadBC, and DR1558 performed at pH 5.0 resulted in the final GABA titer of 6.16 g/L by consuming 116.82 g/L of glucose in 38 h. CONCLUSION This is the first report to demonstrate GABA production by acidic fermentation and to provide an engineering strategy for conferring acid resistance to the recombinant E. coli for GABA production.
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Affiliation(s)
- Sung-Ho Park
- Department of Biotechnology and Bioengineering, Interdisciplinary Program for Bioenergy & Biomaterials, Chonnam National University, 77 Yongbong-ro, Gwangju, 61186, Republic of Korea
| | - Yu Jung Sohn
- Division of Chemical Engineering and Materials Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Si Jae Park
- Division of Chemical Engineering and Materials Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea.
| | - Jong-Il Choi
- Department of Biotechnology and Bioengineering, Interdisciplinary Program for Bioenergy & Biomaterials, Chonnam National University, 77 Yongbong-ro, Gwangju, 61186, Republic of Korea.
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Metabolic engineering for the synthesis of polyesters: A 100-year journey from polyhydroxyalkanoates to non-natural microbial polyesters. Metab Eng 2020; 58:47-81. [DOI: 10.1016/j.ymben.2019.05.009] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/04/2019] [Accepted: 05/26/2019] [Indexed: 11/16/2022]
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15
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Park SJ, Sohn YJ, Park SJ, Choi JI. Enhanced Production of 2,3-Butanediol in Recombinant Escherichia coli Using Response Regulator DR1558 Derived from Deinococcus radiodurans. BIOTECHNOL BIOPROC E 2020. [DOI: 10.1007/s12257-019-0306-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Hydrogen Production from Methane by Methylomonas sp. DH-1 under Micro-aerobic Conditions. BIOTECHNOL BIOPROC E 2020. [DOI: 10.1007/s12257-019-0256-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Kim S, Ahn JO, Kim KM, Lee CH. Effects of the mobile phase on the chromatographic separation of l-lysine and 5-aminovaleric acid. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104369] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Kashcheyeva EI, Gismatulina YA, Budaeva VV. Pretreatments of Non-Woody Cellulosic Feedstocks for Bacterial Cellulose Synthesis. Polymers (Basel) 2019; 11:polym11101645. [PMID: 31658767 PMCID: PMC6835985 DOI: 10.3390/polym11101645] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/08/2019] [Accepted: 10/08/2019] [Indexed: 11/23/2022] Open
Abstract
Pretreatment of biomass is a key step in the production of valuable products, including high-tech bacterial cellulose. The efficiency of five different pretreatment methods of Miscanthus and oat hulls for enzymatic hydrolysis and subsequent synthesis of bacterial cellulose (BC) was evaluated herein: Hydrothermobaric treatment, single-stage treatments with dilute HNO3 or dilute NaOH solution, and two-stage combined treatment with dilute HNO3 and NaOH solutions in direct and reverse order. The performance of enzymatic hydrolysis of pretreatment products was found to increase by a factor of 4−7. All the resultant hydrolyzates were composed chiefly of glucose, as the xylose percentage in total reducing sugars (RS) was 1−9%. The test synthesis of BC demonstrated good quality of nutrient media prepared from all the enzymatic hydrolyzates, except the hydrothermobaric treatment hydrolyzate. For biosynthesis of BC, single-stage pretreatments with either dilute HNO3 or dilute NaOH are advised due their simplicity and the high performance of enzymatic hydrolysis of pretreatment products (RS yield 79.7−83.4%).
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Affiliation(s)
- Ekaterina I Kashcheyeva
- Bioconversion Laboratory, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk 659322, Altai Krai, Russia.
| | - Yulia A Gismatulina
- Bioconversion Laboratory, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk 659322, Altai Krai, Russia.
| | - Vera V Budaeva
- Bioconversion Laboratory, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk 659322, Altai Krai, Russia.
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Revealing the factors determining the selectivity of guaiacol HDO reaction pathways using ZrP-supported Co and Ni catalysts. J Catal 2019. [DOI: 10.1016/j.jcat.2019.07.034] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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High-Level Conversion of l-lysine into Cadaverine by Escherichia coli Whole Cell Biocatalyst Expressing Hafnia alvei l-lysine Decarboxylase. Polymers (Basel) 2019; 11:polym11071184. [PMID: 31337154 PMCID: PMC6680443 DOI: 10.3390/polym11071184] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/03/2019] [Accepted: 07/05/2019] [Indexed: 11/30/2022] Open
Abstract
Cadaverine is a C5 diamine monomer used for the production of bio-based polyamide 510. Cadaverine is produced by the decarboxylation of l-lysine using a lysine decarboxylase (LDC). In this study, we developed recombinant Escherichia coli strains for the expression of LDC from Hafnia alvei. The resulting recombinant XBHaLDC strain was used as a whole cell biocatalyst for the high-level bioconversion of l-lysine into cadaverine without the supplementation of isopropyl β-d-1-thiogalactopyranoside (IPTG) for the induction of protein expression and pyridoxal phosphate (PLP), a key cofactor for an LDC reaction. The comparison of results from enzyme characterization of E. coli and H. alvei LDC revealed that H. alvei LDC exhibited greater bioconversion ability than E. coli LDC due to higher levels of protein expression in all cellular fractions and a higher specific activity at 37 °C (1825 U/mg protein > 1003 U/mg protein). The recombinant XBHaLDC and XBEcLDC strains were constructed for the high-level production of cadaverine. Recombinant XBHaLDC produced a 1.3-fold higher titer of cadaverine (6.1 g/L) than the XBEcLDC strain (4.8 g/L) from 10 g/L of l-lysine. Furthermore, XBHaLDC, concentrated to an optical density (OD600) of 50, efficiently produced 136 g/L of cadaverine from 200 g/L of l-lysine (97% molar yield) via an IPTG- and PLP-free whole cell bioconversion reaction. Cadaverine synthesized via a whole cell biocatalyst reaction using XBHaLDC was purified to polymer grade, and purified cadaverine was successfully used for the synthesis of polyamide 510. In conclusion, an IPTG- and PLP-free whole cell bioconversion process of l-lysine into cadaverine, using recombinant XBHaLDC, was successfully utilized for the production of bio-based polyamide 510, which has physical and thermal properties similar to polyamide 510 synthesized from chemical-grade cadaverine.
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Enhanced production of poly‑3‑hydroxybutyrate (PHB) by expression of response regulator DR1558 in recombinant Escherichia coli. Int J Biol Macromol 2019; 131:29-35. [DOI: 10.1016/j.ijbiomac.2019.03.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 03/04/2019] [Accepted: 03/06/2019] [Indexed: 01/14/2023]
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22
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Camargo D, Sydney EB, Leonel LV, Pintro TC, Sene L. DILUTE ACID HYDROLYSIS OF SWEET SORGHUM BAGASSE AND FERMENTABILITY OF THE HEMICELLULOSIC HYDROLYSATE. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2019. [DOI: 10.1590/0104-6632.20190361s20170643] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | | | | | - Luciane Sene
- Universidade Estadual do Oeste do Paraná, Brasil
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23
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Recent Advances in the Metabolic Engineering of Klebsiella pneumoniae: A Potential Platform Microorganism for Biorefineries. BIOTECHNOL BIOPROC E 2019. [DOI: 10.1007/s12257-018-0346-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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24
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Metabolic engineering of Corynebacterium glutamicum for the production of glutaric acid, a C5 dicarboxylic acid platform chemical. Metab Eng 2019; 51:99-109. [DOI: 10.1016/j.ymben.2018.08.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 08/08/2018] [Accepted: 08/17/2018] [Indexed: 01/24/2023]
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25
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Pang J, Li X, Zou W, Tang C, Wang Y, Dong L. Synthesis of Surface‐Controlled CePO4and Its Application for Catalyzed Decarbonylation of Lactic Acid to Acetaldehyde. ChemistrySelect 2018. [DOI: 10.1002/slct.201802285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Jun Pang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan ProvinceChina West Normal University Nanchong Sichuan 637002, PR China
- School of Chemistry and Chemical EngineeringChongqing University of Technology Chongqing 400054, PR China
| | - Xinli Li
- School of Chemistry and Chemical EngineeringChongqing University of Technology Chongqing 400054, PR China
| | - Weixin Zou
- Jiangsu Key Laboratory of Vehicle Emissions ControlCenter of Modern AnalysisNanjing University Nanjing 210093, PR China
| | - Congming Tang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan ProvinceChina West Normal University Nanchong Sichuan 637002, PR China
- School of Chemistry and Chemical EngineeringChongqing University of Technology Chongqing 400054, PR China
| | - Yu Wang
- School of Chemistry and Life ScienceGuizhou Education University Guiyang 550018, PR China
| | - Lin Dong
- Jiangsu Key Laboratory of Vehicle Emissions ControlCenter of Modern AnalysisNanjing University Nanjing 210093, PR China
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Kuglarz M, Alvarado-Morales M, Dąbkowska K, Angelidaki I. Integrated production of cellulosic bioethanol and succinic acid from rapeseed straw after dilute-acid pretreatment. BIORESOURCE TECHNOLOGY 2018; 265:191-199. [PMID: 29902651 DOI: 10.1016/j.biortech.2018.05.099] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/27/2018] [Accepted: 05/28/2018] [Indexed: 06/08/2023]
Abstract
The aim of this study was to develop an integrated biofuel (cellulosic bioethanol) and biochemical (succinic acid) production process from rapeseed straw after dilute-acid pretreatment. Rapeseed straw pretreatment at 20% (w/v) solid loading and subsequent hydrolysis with Cellic® CTec2 resulted in high glucose yield (80%) and ethanol output (122-125 kg of EtOH/Mg of rapeseed straw). Supplementation the enzymatic process with 10% dosage of endoxylanases (Cellic® HTec2) reduced the hydrolysis time required to achieve the maximum glucan conversion by 44-46% and increased the xylose yield by 10% compared to the process with Cellic® CTec2. Significantly higher amounts of succinic acid were produced after fermentation of pretreatment liquor (48 kg/Mg of rapeseed straw, succinic acid yield: 60%) compared to fermentation of xylose-rich residue after ethanol production (35-37 kg/Mg of rapeseed straw, succinic yield: 68-71%). Results obtained in this study clearly proved the biorefinery potential of rapeseed straw.
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Affiliation(s)
- Mariusz Kuglarz
- Faculty of Materials, Civil and Environmental Engineering, University of Bielsko-Biala, Willowa 2, Bielsko-Biala, Poland
| | - Merlin Alvarado-Morales
- Department of Environmental Engineering, Technical University of Denmark, Building 113, DK-2800 Lyngby, Denmark
| | - Katarzyna Dąbkowska
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, 00-645 Warsaw, ul. Waryńskiego 1, Poland
| | - Irini Angelidaki
- Department of Environmental Engineering, Technical University of Denmark, Building 113, DK-2800 Lyngby, Denmark.
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Baritugo KA, Kim HT, David Y, Khang TU, Hyun SM, Kang KH, Yu JH, Choi JH, Song JJ, Joo JC, Park SJ. Enhanced production of gamma-aminobutyrate (GABA) in recombinant Corynebacterium glutamicum strains from empty fruit bunch biosugar solution. Microb Cell Fact 2018; 17:129. [PMID: 30131070 PMCID: PMC6102818 DOI: 10.1186/s12934-018-0977-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 08/11/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Recent interest has been focused on the production of platform chemicals from renewable biomass due to increasing concerns on global warming and depletion of fossil fuel reserves. Microbial production of platform chemicals in biorefineries has been suggested to be a promising solution for these problems. Gamma-aminobutyrate (GABA), a versatile bulk chemical used in food and pharmaceutical industry, is also used as a key monomer for nylon 4. GABA can be biologically produced by decarboxylation of glutamate. RESULTS In this study, we examined high glutamate-producing Corynebacterium glutamicum strains as hosts for enhanced production of GABA from glucose and xylose as carbon sources. An Escherichia coli gadB mutant with a broad pH range of activity and E. coli xylAB genes were expressed under the control of a synthetic H36 promoter. When empty fruit bunch (EFB) solution was used as carbon source (45 g/L glucose and 5 g/L xylose), 12.54 ± 0.07 g/L GABA was produced by recombinant C. glutamicum H36GD1852 expressing E. coli gadB mutant gene and xylAB genes. Batch fermentation of the same strain resulted in the production of 35.47 g/L of GABA when EFB solution was added to support 90 g/L glucose and 10 g/L xylose. CONCLUSIONS This is the first report of GABA production by recombinant C. glutamicum strains from co-utilization of glucose and xylose from EFB solution. Recombinant C. glutamicum strains developed in this study should be useful for an efficient and sustainable production of GABA from lignocellulosic biomasses.
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Affiliation(s)
- Kei-Anne Baritugo
- Division of Chemical Engineering and Materials Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Hee Taek Kim
- Bio-based Chemistry Research Center, Advanced Convergent Chemistry Division, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea
| | - Yokimiko David
- Division of Chemical Engineering and Materials Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Tae Uk Khang
- Bio-based Chemistry Research Center, Advanced Convergent Chemistry Division, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea
| | - Sung Min Hyun
- Bio-based Chemistry Research Center, Advanced Convergent Chemistry Division, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea
| | - Kyoung Hee Kang
- Bio-based Chemistry Research Center, Advanced Convergent Chemistry Division, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea
| | - Ju Hyun Yu
- Bio-based Chemistry Research Center, Advanced Convergent Chemistry Division, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea
| | - Jong Hyun Choi
- Microbial Biotechnology Research Center, Jeonbuk Branch Institute, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup, Jeonbuk, 56212, Republic of Korea
| | - Jae Jun Song
- Microbial Biotechnology Research Center, Jeonbuk Branch Institute, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup, Jeonbuk, 56212, Republic of Korea
| | - Jeong Chan Joo
- Bio-based Chemistry Research Center, Advanced Convergent Chemistry Division, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea.
| | - Si Jae Park
- Division of Chemical Engineering and Materials Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea.
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Evaluation of Separate and Simultaneous Kinetic Parameters for Levulinic Acid and Furfural Production from Pretreated Palm Oil Empty Fruit Bunches. INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING 2018. [DOI: 10.1155/2018/1920180] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Palm oil empty fruit bunches (POEFBs) can be converted into levulinic acid (LA) and furfural, which are among the top building-block chemicals. The purpose of this study was to investigate separate and simultaneous kinetic model parameters for LA and furfural production from POEFBs, which were pretreated by soaking in aqueous ammonia (SAA). The highest LA yield, which was obtained at a reaction temperature of 170°C after 90 min in an acidic solution with a concentration of 1 M, was 52.1 mol%. The highest furfural yield was 27.94 mol%, which was obtained at a reaction temperature of 170°C after 20 min in an acidic solution with a concentration of 0.5 M. SAA pretreatment affected activation energy in glucose degradation reactions and favoured direct conversion of hemicellulose to furfural. The activation energy of LA production (EakHMF) increases with higher acid catalyst concentration, and the activation energy of furfural production (EakXYN) decreases with higher acid concentration. These trends in the activation energy occurred in both separate and simultaneous kinetic models. Simultaneous kinetic model is better to calculate kinetic parameters of LA and furfural production than separate kinetic models because the simultaneous kinetic model had a lower sum of square error (SSE) when estimating kinetic parameters.
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Ravikumar S, David Y, Park SJ, Choi JI. A Chimeric Two-Component Regulatory System-Based Escherichia coli Biosensor Engineered to Detect Glutamate. Appl Biochem Biotechnol 2018; 186:335-349. [DOI: 10.1007/s12010-018-2746-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 03/21/2018] [Indexed: 12/13/2022]
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Metallic nickel supported on mesoporous silica as catalyst for hydrodeoxygenation: effect of pore size and structure. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3377-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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31
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Metabolic engineering of Corynebacterium glutamicum for fermentative production of chemicals in biorefinery. Appl Microbiol Biotechnol 2018; 102:3915-3937. [DOI: 10.1007/s00253-018-8896-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 02/23/2018] [Accepted: 02/26/2018] [Indexed: 01/22/2023]
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Characterization of a Whole-Cell Biotransformation Using a Constitutive Lysine Decarboxylase from Escherichia coli for the High-Level Production of Cadaverine from Industrial Grade l-Lysine. Appl Biochem Biotechnol 2018; 185:909-924. [DOI: 10.1007/s12010-018-2696-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 01/08/2018] [Indexed: 10/18/2022]
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Lee SJ, Choi HS, Kim CK, Thapa LP, Park C, Kim SW. Process strategy for 2,3-butanediol production in fed-batch culture by acetate addition. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.07.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Joo JC, Oh YH, Yu JH, Hyun SM, Khang TU, Kang KH, Song BK, Park K, Oh MK, Lee SY, Park SJ. Production of 5-aminovaleric acid in recombinant Corynebacterium glutamicum strains from a Miscanthus hydrolysate solution prepared by a newly developed Miscanthus hydrolysis process. BIORESOURCE TECHNOLOGY 2017; 245:1692-1700. [PMID: 28579174 DOI: 10.1016/j.biortech.2017.05.131] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/18/2017] [Accepted: 05/19/2017] [Indexed: 06/07/2023]
Abstract
This study examined nine expired industrial Corynebacterium glutamicum strains with high lysine producing capability for enhanced production of 5-AVA. C. glutamicum KCTC 1857 exhibiting the highest lysine production was transformed with either original Pseudomonas putida davBA genes, encoding the 5-AVA biosynthesis pathway, or C. glutamicum codon-optimized davBA genes. C. glutamicum KCTC 1857 expressing the original genes had superior cell viability and 5-AVA production capability compared to the other strain. This strain produced 39.93g/L of 5-AVA, which is the highest titer reported to date in fed-batch fermentation from glucose. Indeed, Miscanthus hydrolysate solution prepared from a novel process, comprising pretreatment, hydrolysis, purification, and concentration, was used as feedstock for 5-AVA production. A total of 12.51g/L 5-AVA was produced from the Miscanthus hydrolysate; this value is 34.7% higher than that obtained from glucose in batch fermentation.
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Affiliation(s)
- Jeong Chan Joo
- Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 34602, Republic of Korea
| | - Young Hoon Oh
- Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 34602, Republic of Korea
| | - Ju Hyun Yu
- Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 34602, Republic of Korea
| | - Sung Min Hyun
- Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 34602, Republic of Korea; Department of Biological and Chemical Engineering, Hongik University, 2639 Sejong-ro, Sinan-ri, Jochiwon-eup, Sejong-si 30016, Republic of Korea
| | - Tae Uk Khang
- Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 34602, Republic of Korea; Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Kyoung Hee Kang
- Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 34602, Republic of Korea
| | - Bong Keun Song
- Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 34602, Republic of Korea
| | - Kyungmoon Park
- Department of Biological and Chemical Engineering, Hongik University, 2639 Sejong-ro, Sinan-ri, Jochiwon-eup, Sejong-si 30016, Republic of Korea
| | - Min-Kyu Oh
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Sang Yup Lee
- Metabolic Engineering National Research Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Plus program), KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Si Jae Park
- Division of Chemical Engineering and Materials Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea.
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Teixeira WKO, Gonçalves HA, de Mello DL, Moura S, Flores DC, Flores AFC. Cyclocondensation between fatty acid hydrazides and 1,1,1-trifluoro-4-alkoxy-3-alken-2-ones: Introducing a trifluoromethylated head onto fatty acid moieties. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1364769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Wystan K. O. Teixeira
- Escola de Química e Alimentos, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Helena A. Gonçalves
- Escola de Química e Alimentos, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Débora L. de Mello
- Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Sidnei Moura
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, RS, Brazil
| | - Darlene C. Flores
- Escola de Química e Alimentos, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Alex F. C. Flores
- Escola de Química e Alimentos, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
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Makarova EI, Budaeva VV, Kukhlenko AA, Orlov SE. Enzyme kinetics of cellulose hydrolysis of Miscanthus and oat hulls. 3 Biotech 2017; 7:317. [PMID: 28955614 DOI: 10.1007/s13205-017-0964-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 09/07/2017] [Indexed: 11/25/2022] Open
Abstract
Experiments were done to model enzymatic hydrolysis of Miscanthus and oat hulls treated with dilute solutions of nitric acid and sodium hydroxide in direct and reverse sequences. The enzymatic hydrolysis kinetics of the substrates was studied at an initial solid loading from 30 to 120 g/L. The effects of feedstock type and its pretreatment method on the initial hydrolysis rate and reducing sugar yield were evaluated. The fitting results by the developed models showed good agreement with the experimental data. These models designed for developing the production technology of concentrated glucose solutions can also be applied for glucose fermentation into ethanol. The initial solid loading of 60-90 g/L provides the reducing sugar concentration of 40-80 g/L necessary for ethanol synthesis. The kinetic model can also be applied to investigate enzymatic hydrolysis of other substrates (feedstock type, pretreatment method) under the similar conditions used herein, with adjusted empirical coefficient values.
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Affiliation(s)
- Ekaterina I Makarova
- Laboratory of Bioconversion, Laboratory of Chemical Engineering Processes and Apparatuses, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk, Altai Krai Russia 659322
| | - Vera V Budaeva
- Laboratory of Bioconversion, Laboratory of Chemical Engineering Processes and Apparatuses, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk, Altai Krai Russia 659322
| | - Aleksey A Kukhlenko
- Laboratory of Bioconversion, Laboratory of Chemical Engineering Processes and Apparatuses, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk, Altai Krai Russia 659322
| | - Sergey E Orlov
- Laboratory of Bioconversion, Laboratory of Chemical Engineering Processes and Apparatuses, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk, Altai Krai Russia 659322
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Shafaghat H, Rezaei PS, Ro D, Jae J, Kim BS, Jung SC, Sung BH, Park YK. In-situ catalytic pyrolysis of lignin in a bench-scale fixed bed pyrolyzer. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.06.026] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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David Y, Joo JC, Yang JE, Oh YH, Lee SY, Park SJ. Biosynthesis of 2-Hydroxyacid-Containing Polyhydroxyalkanoates by Employing butyryl-CoA Transferases in Metabolically Engineered Escherichia coli. Biotechnol J 2017; 12. [PMID: 28862377 DOI: 10.1002/biot.201700116] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 08/25/2017] [Indexed: 01/03/2023]
Abstract
The authors previously reported the production of polyhydroxyalkanoates (PHAs) containing 2-hydroxyacid monomers by expressing evolved Pseudomonas sp. 6-19 PHA synthase and Clostridium propionicum propionyl-CoA transferase in engineered microorganisms. Here, the authors examined four butyryl-CoA transferases from Roseburia sp., Eubacterium hallii, Faecalibacterium prausnitzii, and Anaerostipes caccae as potential CoA-transferases to support synthesis of polymers having 2HA monomer. In vitro activity analyses of the four butyryl-CoA transferases suggested that each butyryl-CoA transferase has different activities towards 2-hydroxybutyrate (2HB), 3-hydroxybutyrate (3HB), and lactate (LA). When Escherichia coli XL1-Blue expressing Pseudomonas sp. 6-19 PhaC1437 along with one butyryl-CoA transferase is cultured in chemically defined MR medium containing 20 g L-1 of glucose, 2 g L-1 of sodium 3-hydroxybutyrate, and various concentrations of sodium 2-hydroxybutyrate, PHAs consisting of 3HB, 2HB, and LA are produced. The monomer composition of PHAs agreed well with the substrate specificities of butyryl-CoA transferases from E. hallii, F. prausnitzii, and A. caccae, but not Roseburia sp. When E. coli XL1-Blue expressing PhaC1437 and E. hallii butyryl-CoA transferase is cultured in MR medium containing 20 g L-1 of glucose and 2 g L-1 of sodium 2-hydroxybutyrate, P(65.7 mol% 2HB-co-34.3 mol% LA) is produced with the highest PHA content of 30 wt%. Butyryl-CoA transferases also supported the production of P(3HB-co-2HB-co-LA) from glucose as the sole carbon source in E. coli XL1-Blue strains when one of these bct genes is expressed with phaC1437, cimA3.7, leuBCD, panE, and phaAB genes. Butyryl-CoA transferases characterized in this study can be used for engineering of microorganisms that produce PHAs containing novel 2-hydroxyacid monomers.
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Affiliation(s)
- Yokimiko David
- Y. David, Prof. S. J. Park, Division of Chemical Engineering and Materials Science, Ewha Womans University, Seoul, Republic of Korea
| | - Jeong Chan Joo
- Dr. J. C. Joo, Y. H. Oh, Center for Bio-Based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - Jung Eun Yang
- Dr. J. E. Yang, Prof. S. Y. Lee, Metabolic and Biomolecular Engineering National Research Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Program), Center for Systems and Synthetic Biotechnology, and Institute for the BioCentury, KAIST, Daejeon, Republic of Korea
| | - Young Hoon Oh
- Dr. J. C. Joo, Y. H. Oh, Center for Bio-Based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - Sang Yup Lee
- Dr. J. E. Yang, Prof. S. Y. Lee, Metabolic and Biomolecular Engineering National Research Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Program), Center for Systems and Synthetic Biotechnology, and Institute for the BioCentury, KAIST, Daejeon, Republic of Korea
| | - Si Jae Park
- Y. David, Prof. S. J. Park, Division of Chemical Engineering and Materials Science, Ewha Womans University, Seoul, Republic of Korea
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Effect of organosolv pretreatment on mechanically pretreated biomass by use of concentrated ethanol as the solvent. BIOTECHNOL BIOPROC E 2017. [DOI: 10.1007/s12257-017-0088-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sánchez-Bastardo N, Alonso E. Maximization of monomeric C5 sugars from wheat bran by using mesoporous ordered silica catalysts. BIORESOURCE TECHNOLOGY 2017; 238:379-388. [PMID: 28456046 DOI: 10.1016/j.biortech.2017.04.062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/16/2017] [Accepted: 04/17/2017] [Indexed: 06/07/2023]
Abstract
The hydrolysis process of a real fraction of arabinoxylans derived from wheat bran was studied. The influence of catalyst type and loading, reaction time and different metal cations were discussed in terms of the hydrolysis yield of arabinose and xylose oligomers as well as the formation of furfural as degradation product. A high yield of arabinoxylans into the corresponding monomeric sugars (96 and 94% from arabino- and xylo-oligosaccharides, respectively) was obtained at relatively high temperatures (180°C) and short reaction times (15min) with a catalyst loading of 4.8g of RuCl3/Al-MCM-48 per g of initial carbon in hemicelluloses.
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Affiliation(s)
- Nuria Sánchez-Bastardo
- High Pressure Processes Group, Chemical Engineering and Environmental Technology Department, C/Dr. Mergelina s/n, University of Valladolid, 47011, Spain
| | - Esther Alonso
- High Pressure Processes Group, Chemical Engineering and Environmental Technology Department, C/Dr. Mergelina s/n, University of Valladolid, 47011, Spain.
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Gong G, Kim S, Lee SM, Woo HM, Park TH, Um Y. Complete genome sequence of Bacillus sp. 275, producing extracellular cellulolytic, xylanolytic and ligninolytic enzymes. J Biotechnol 2017; 254:59-62. [DOI: 10.1016/j.jbiotec.2017.05.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 05/25/2017] [Accepted: 05/26/2017] [Indexed: 11/26/2022]
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42
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Sun Y, Xiong C, Chen H, Zeng X, Tang X, Lei T, Lin L. One-pot synthesis of high fructose corn syrup directly from starch with SO 4 2− /USY solid catalyst. KOREAN J CHEM ENG 2017. [DOI: 10.1007/s11814-017-0098-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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43
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Co-processing of heavy oil with wood biomass using supercritical m-xylene and n-dodecane solvents. KOREAN J CHEM ENG 2017. [DOI: 10.1007/s11814-017-0109-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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44
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Screening of microorganisms able to degrade low-rank coal in aerobic conditions: Potential coal biosolubilization mediators from coal to biochemicals. BIOTECHNOL BIOPROC E 2017. [DOI: 10.1007/s12257-016-0263-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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45
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Ravikumar S, Baylon MG, Park SJ, Choi JI. Engineered microbial biosensors based on bacterial two-component systems as synthetic biotechnology platforms in bioremediation and biorefinery. Microb Cell Fact 2017; 16:62. [PMID: 28410609 PMCID: PMC5391612 DOI: 10.1186/s12934-017-0675-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Accepted: 04/04/2017] [Indexed: 12/30/2022] Open
Abstract
Two-component regulatory systems (TCRSs) mediate cellular response by coupling sensing and regulatory mechanisms. TCRSs are comprised of a histidine kinase (HK), which serves as a sensor, and a response regulator, which regulates expression of the effector gene after being phosphorylated by HK. Using these attributes, bacterial TCRSs can be engineered to design microbial systems for different applications. This review focuses on the current advances in TCRS-based biosensors and on the design of microbial systems for bioremediation and their potential application in biorefinery.
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Affiliation(s)
- Sambandam Ravikumar
- Biomolecules Engineering Lab, Department of Biotechnology and Bioengineering, Chonnam National University, 77 Yongbong-ro, Gwangju, 61186, Republic of Korea
| | - Mary Grace Baylon
- Division of Chemical Engineering and Materials Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Si Jae Park
- Division of Chemical Engineering and Materials Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea.
| | - Jong-Il Choi
- Biomolecules Engineering Lab, Department of Biotechnology and Bioengineering, Chonnam National University, 77 Yongbong-ro, Gwangju, 61186, Republic of Korea.
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Martelli-Tosi M, Assis OBG, Silva NC, Esposto BS, Martins MA, Tapia-Blácido DR. Chemical treatment and characterization of soybean straw and soybean protein isolate/straw composite films. Carbohydr Polym 2017; 157:512-520. [PMID: 27987956 DOI: 10.1016/j.carbpol.2016.10.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 09/20/2016] [Accepted: 10/06/2016] [Indexed: 11/20/2022]
Abstract
This work investigated changes in the chemical composition and structure of soybean straw (SS) treated with alkali (NaOH 5% and 17.5%) and bleached with hydrogen peroxide (H2O2) or sodium hypochlorite (NaOCl). Removal of the amorphous constituents increased the degree of crystallinity and the content of cellulose fibers particularly after reaction with high concentrations of alkali. Treatment with NaOH 17.5% contributed to the allomorph transition from cellulose I to II regardless of the bleaching agent, but H2O2 as bleaching agent promoted more effective delignification. This work also evaluated the potential use of treated and non-treated SS as reinforcement filler in soy protein isolate film (SPI). Films added with treated SS presented higher mechanical resistance, lower elongation at break, and lower solubility in water. Addition of non-treated SS did not affect the properties of the SPI film significantly. The low solubility and the reasonable water vapor permeability of the composite films make them suitable packaging materials for fresh fruit and vegetables.
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Affiliation(s)
- Milena Martelli-Tosi
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Bandeirantes Avenue 3900, CEP 14040-901, Ribeirão Preto, SP, Brazil; Departamento de Engenharia de Alimentos, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Rua Duque de Caxias Norte 225, CEP 13635-900, Pirassununga, SP, Brazil.
| | - Odílio B G Assis
- Embrapa Instrumentação, National Nanotechnology Laboratory for Agriculture, Rua XV de Novembro, 1452, CEP 13561-206, São Carlos, SP, Brazil
| | - Natália C Silva
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Bandeirantes Avenue 3900, CEP 14040-901, Ribeirão Preto, SP, Brazil
| | - Bruno S Esposto
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Bandeirantes Avenue 3900, CEP 14040-901, Ribeirão Preto, SP, Brazil
| | - Maria Alice Martins
- Embrapa Instrumentação, National Nanotechnology Laboratory for Agriculture, Rua XV de Novembro, 1452, CEP 13561-206, São Carlos, SP, Brazil
| | - Delia R Tapia-Blácido
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Bandeirantes Avenue 3900, CEP 14040-901, Ribeirão Preto, SP, Brazil
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47
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Performance assessment and system optimization of a combined cycle power plant (CCPP) based on exergoeconomic and exergoenvironmental analyses. KOREAN J CHEM ENG 2016. [DOI: 10.1007/s11814-016-0276-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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48
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Baylon MG, David Y, Pamidimarri SDVN, Baritugo KA, Chae CG, Kim YJ, Kim TW, Kim MS, Na JG, Park SJ. Bio-solubilization of the untreated low rank coal by alkali-producing bacteria isolated from soil. KOREAN J CHEM ENG 2016. [DOI: 10.1007/s11814-016-0252-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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49
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Shin JH, Park SH, Oh YH, Choi JW, Lee MH, Cho JS, Jeong KJ, Joo JC, Yu J, Park SJ, Lee SY. Metabolic engineering of Corynebacterium glutamicum for enhanced production of 5-aminovaleric acid. Microb Cell Fact 2016; 15:174. [PMID: 27717386 PMCID: PMC5054628 DOI: 10.1186/s12934-016-0566-8] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 09/22/2016] [Indexed: 01/30/2023] Open
Abstract
Background 5-Aminovaleric acid (5AVA) is an important five-carbon platform chemical that can be used for the synthesis of polymers and other chemicals of industrial interest. Enzymatic conversion of l-lysine to 5AVA has been achieved by employing lysine 2-monooxygenase encoded by the davB gene and 5-aminovaleramidase encoded by the davA gene. Additionally, a recombinant Escherichia coli strain expressing the davB and davA genes has been developed for bioconversion of l-lysine to 5AVA. To use glucose and xylose derived from lignocellulosic biomass as substrates, rather than l-lysine as a substrate, we previously examined direct fermentative production of 5AVA from glucose by metabolically engineered E. coli strains. However, the yield and productivity of 5AVA achieved by recombinant E. coli strains remain very low. Thus, Corynebacterium glutamicum, a highly efficient l-lysine producing microorganism, should be useful in the development of direct fermentative production of 5AVA using l-lysine as a precursor for 5AVA. Here, we report the development of metabolically engineered C. glutamicum strains for enhanced fermentative production of 5AVA from glucose. Results Various expression vectors containing different promoters and origins of replication were examined for optimal expression of Pseudomonas putida davB and davA genes encoding lysine 2-monooxygenase and delta-aminovaleramidase, respectively. Among them, expression of the C. glutamicum codon-optimized davA gene fused with His6-Tag at its N-Terminal and the davB gene as an operon under a strong synthetic H36 promoter (plasmid p36davAB3) in C. glutamicum enabled the most efficient production of 5AVA. Flask culture and fed-batch culture of this strain produced 6.9 and 19.7 g/L (together with 11.9 g/L glutaric acid as major byproduct) of 5AVA, respectively. Homology modeling suggested that endogenous gamma-aminobutyrate aminotransferase encoded by the gabT gene might be responsible for the conversion of 5AVA to glutaric acid in recombinant C. glutamicum. Fed-batch culture of a C. glutamicum gabT mutant-harboring p36davAB3 produced 33.1 g/L 5AVA with much reduced (2.0 g/L) production of glutaric acid. Conclusions Corynebacterium glutamicum was successfully engineered to produce 5AVA from glucose by optimizing the expression of two key enzymes, lysine 2-monooxygenase and delta-aminovaleramidase. In addition, production of glutaric acid, a major byproduct, was significantly reduced by employing C. glutamicum gabT mutant as a host strain. The metabolically engineered C. glutamicum strains developed in this study should be useful for enhanced fermentative production of the novel C5 platform chemical 5AVA from renewable resources. Electronic supplementary material The online version of this article (doi:10.1186/s12934-016-0566-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jae Ho Shin
- Department of Chemical and Biomolecular Engineering (BK21 Plus program), Institute for the BioCentury, Center for Systems and Synthetic Biotechnology, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.,Metabolic Engineering National Research Laboratory and BioProcess Engineering Research Center, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Seok Hyun Park
- Department of Chemical and Biomolecular Engineering (BK21 Plus program), Institute for the BioCentury, Center for Systems and Synthetic Biotechnology, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.,Metabolic Engineering National Research Laboratory and BioProcess Engineering Research Center, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Young Hoon Oh
- Division of Convergence Chemistry, Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea
| | - Jae Woong Choi
- Department of Chemical and Biomolecular Engineering (BK21 Plus program), Institute for the BioCentury, Center for Systems and Synthetic Biotechnology, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Moon Hee Lee
- Department of Chemical and Biomolecular Engineering (BK21 Plus program), Institute for the BioCentury, Center for Systems and Synthetic Biotechnology, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.,Metabolic Engineering National Research Laboratory and BioProcess Engineering Research Center, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jae Sung Cho
- Department of Chemical and Biomolecular Engineering (BK21 Plus program), Institute for the BioCentury, Center for Systems and Synthetic Biotechnology, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.,Metabolic Engineering National Research Laboratory and BioProcess Engineering Research Center, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Ki Jun Jeong
- Department of Chemical and Biomolecular Engineering (BK21 Plus program), Institute for the BioCentury, Center for Systems and Synthetic Biotechnology, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jeong Chan Joo
- Division of Convergence Chemistry, Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea
| | - James Yu
- Metabolic Engineering National Research Laboratory and BioProcess Engineering Research Center, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Si Jae Park
- Department of Environmental Engineering and Energy, Myongji University, 116 Myongji-ro, Cheoin-gu, Yongin, Gyeonggido, 17058, Republic of Korea.
| | - Sang Yup Lee
- Department of Chemical and Biomolecular Engineering (BK21 Plus program), Institute for the BioCentury, Center for Systems and Synthetic Biotechnology, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea. .,Metabolic Engineering National Research Laboratory and BioProcess Engineering Research Center, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea. .,Bioinformatics Research Center, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.
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Yang JE, Kim JW, Oh YH, Choi SY, Lee H, Park AR, Shin J, Park SJ, Lee SY. Biosynthesis of poly(2-hydroxyisovalerate-co-lactate) by metabolically engineeredEscherichia coli. Biotechnol J 2016; 11:1572-1585. [DOI: 10.1002/biot.201600420] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/22/2016] [Accepted: 09/06/2016] [Indexed: 01/10/2023]
Affiliation(s)
- Jung Eun Yang
- Metabolic and Biomolecular Engineering National Research Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Plus Program), BioProcess Engineering Research Center, Center for Systems and Synthetic Biotechnology, and Institute for the BioCentury; Korea Advanced Institute of Science and Technology (KAIST); Daejeon Republic of Korea
| | - Je Woong Kim
- Metabolic and Biomolecular Engineering National Research Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Plus Program), BioProcess Engineering Research Center, Center for Systems and Synthetic Biotechnology, and Institute for the BioCentury; Korea Advanced Institute of Science and Technology (KAIST); Daejeon Republic of Korea
| | - Young Hoon Oh
- Center for Bio-based Chemistry, Division of Convergence Chemistry; Korea Research Institute of Chemical Technology; Daejeon Republic of Korea
| | - So Young Choi
- Metabolic and Biomolecular Engineering National Research Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Plus Program), BioProcess Engineering Research Center, Center for Systems and Synthetic Biotechnology, and Institute for the BioCentury; Korea Advanced Institute of Science and Technology (KAIST); Daejeon Republic of Korea
| | - Hyuk Lee
- Division of Drug Discovery Research; Korea Research Institute of Chemical Technology; Daejeon Republic of Korea
| | - A-Reum Park
- Division of Drug Discovery Research; Korea Research Institute of Chemical Technology; Daejeon Republic of Korea
| | - Jihoon Shin
- Center for Bio-based Chemistry, Division of Convergence Chemistry; Korea Research Institute of Chemical Technology; Daejeon Republic of Korea
| | - Si Jae Park
- Department of Environmental Engineering and Energy; Myongji University; Gyeonggido Republic of Korea
| | - Sang Yup Lee
- Metabolic and Biomolecular Engineering National Research Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Plus Program), BioProcess Engineering Research Center, Center for Systems and Synthetic Biotechnology, and Institute for the BioCentury; Korea Advanced Institute of Science and Technology (KAIST); Daejeon Republic of Korea
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