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Wang Z, Xu W, Gao Y, Zha M, Zhang D, Peng X, Zhang H, Wang C, Xu C, Zhou T, Liu D, Niu H, Liu Q, Chen Y, Zhu C, Guo T, Ying H. Engineering Saccharomyces cerevisiae for improved biofilm formation and ethanol production in continuous fermentation. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:119. [PMID: 37525255 PMCID: PMC10391976 DOI: 10.1186/s13068-023-02356-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 06/11/2023] [Indexed: 08/02/2023]
Abstract
BACKGROUND Biofilm-immobilized continuous fermentation has the potential to enhance cellular environmental tolerance, maintain cell activity and improve production efficiency. RESULTS In this study, different biofilm-forming genes (FLO5, FLO8 and FLO10) were integrated into the genome of S. cerevisiae for overexpression, while FLO5 and FLO10 gave the best results. The biofilm formation of the engineered strains 1308-FLO5 and 1308-FLO10 was improved by 31.3% and 58.7% compared to that of the WT strain, respectively. The counts of cells adhering onto the biofilm carrier were increased. Compared to free-cell fermentation, the average ethanol production of 1308, 1308-FLO5 and 1308-FLO10 was increased by 17.4%, 20.8% and 19.1% in the biofilm-immobilized continuous fermentation, respectively. Due to good adhering ability, the fermentation broth turbidity of 1308-FLO5 and 1308-FLO10 was decreased by 22.3% and 59.1% in the biofilm-immobilized fermentation, respectively. Subsequently, for biofilm-immobilized fermentation coupled with membrane separation, the engineered strain significantly reduced the pollution of cells onto the membrane and the membrane separation flux was increased by 36.3%. CONCLUSIONS In conclusion, enhanced biofilm-forming capability of S. cerevisiae could offer multiple benefits in ethanol fermentation.
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Affiliation(s)
- Zhenyu Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Weikai Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Yixuan Gao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Mingwei Zha
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Di Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Xiwei Peng
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Huifang Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Cheng Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Chenchen Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Tingqiu Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Dong Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China.
| | - Huanqing Niu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Qingguo Liu
- Institute of Industrial Biotechnology, Jiangsu Industrial Technology Research Institute (JITRI), Nanjing, 210032, China
| | - Yong Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Chenjie Zhu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Ting Guo
- Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Hanjie Ying
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China
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Liu D, Ge S, Wang Z, Li M, Zhuang W, Yang P, Chen Y, Ying H. Identification of a sensor histidine kinase (BfcK) controlling biofilm formation in Clostridium acetobutylicum. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2021.04.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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The Influence of Sugar Composition and pH Regulation in Batch and Continuous Acetone–Butanol–Ethanol Fermentation. FERMENTATION 2022. [DOI: 10.3390/fermentation8050226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Acetone–butanol–ethanol (ABE) fermentation is influenced by external conditions. This work aimed to study the influence of pH regulation on monosaccharide composition in batch and continuous fermentation processes to determine butanol production and productivity. Batch fermentations with ammonium acetate or calcium carbonate combined with minimum pH control (pH ≥ 4.8 or 5.1) were assessed with pure xylose and glucose/xylose mixtures (ratios of 1:1 and 3:1). Continuous two-stage fermentation was developed using plastic rings to retain the biomass. Although batch fermentations with pure xylose performed better without active minimum pH control with both buffers, minimum pH control was necessary to metabolize xylose in the presence of glucose. Xylose uptake was favored by the use of calcium carbonate and pH ≥ 5.1 at a ratio of 1:1, while ammonium acetate and a pH ≥ 4.8 was the best option for a 3:1 ratio. The best butanol production and productivity values with sugar mixtures in batch reactors were 8.8 g L−1 and 0.61 g L−1 h−1 with an ammonium acetate pH ≥ 4.8 (ratio 3:1). The glucose/xylose ratio combined with pH regulation thus modulated xylose metabolism and solvent production in batch modes. Immobilized cells combined with operating at D = 0.333 h−1 and pH regulation increased butanol productivity almost fourfold up to 2.4 ± 0.2 g L−1 h−1.
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Review of alternative technologies for acetone-butanol-ethanol separation: Principles, state-of-the-art, and development trends. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121244] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Ferreira Dos Santos Vieira C, Duzi Sia A, Maugeri Filho F, Maciel Filho R, Pinto Mariano A. Isopropanol-butanol-ethanol production by cell-immobilized vacuum fermentation. BIORESOURCE TECHNOLOGY 2022; 344:126313. [PMID: 34798259 DOI: 10.1016/j.biortech.2021.126313] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/05/2021] [Accepted: 11/06/2021] [Indexed: 06/13/2023]
Abstract
The Isopropanol-Butanol-Ethanol productivity by solventogenic clostridia can increase when cells are immobilized on low-cost, renewable fibrous materials; however, butanol inhibition imposes the need for dilute sugar solutions (less than40 g/L). To alleviate this problem, the in-situ vacuum product recovery technique was applied to recover IBE in repeated-batch cultivation of Clostridium beijerinckii DSM 6423 immobilized on sugarcane bagasse. Five repeated batch cycles were conducted in a 7-L bioreactor containing P2 medium (∼60 g/L glucose) and bagasse packed in 3D-printed concentric annular baskets. In three cycles, glucose was consumed by 86% on average, the IBE productivity was 0.35 g/L∙h or 30% and 17% higher relative to free- and immobilized (without vacuum)-cell cultures. Notably, the product stream contained 45 g/L IBE. However, the fermentation was unsatisfactory in two cycles. Finally, by inserting a fibrous bed with hollow annuli in a vacuum fermentation, this work introduces the concept of an internal-loop boiling-driven fibrous-bed bioreactor.
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Affiliation(s)
- Carla Ferreira Dos Santos Vieira
- Laboratory of Optimization, Design, and Advanced Control - Fermentation Division (LOPCA-Ferm), School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Augusto Duzi Sia
- Laboratory of Optimization, Design, and Advanced Control - Fermentation Division (LOPCA-Ferm), School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Francisco Maugeri Filho
- Bioprocess and Metabolic Engineering Laboratory (LEMeB), School of Food Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Rubens Maciel Filho
- Laboratory of Optimization, Design, and Advanced Control - Fermentation Division (LOPCA-Ferm), School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Adriano Pinto Mariano
- Laboratory of Optimization, Design, and Advanced Control - Fermentation Division (LOPCA-Ferm), School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil.
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Jiang L, Li Y, Wang L, Guo J, Liu W, Meng G, Zhang L, Li M, Cong L, Sun M. Recent Insights Into the Prognostic and Therapeutic Applications of Lysozymes. Front Pharmacol 2021; 12:767642. [PMID: 34925025 PMCID: PMC8678502 DOI: 10.3389/fphar.2021.767642] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 11/10/2021] [Indexed: 01/15/2023] Open
Abstract
Lysozymes are naturally occurring enzymes present in a variety of biological organisms, such as bacteria, fungi, and animal bodily secretions and tissues. It is also the main ingredient of many ethnomedicines. It is well known that lysozymes and lysozyme-like enzymes can be used as anti-bacterial agents by degrading bacterial cell wall peptidoglycan that leads to cell death, and can also inhibit fungi, yeasts, and viruses. In addition to its direct antimicrobial activity, lysozyme is also an important component of the innate immune system in most mammals. Increasing evidence has shown the immune-modulatory effects of lysozymes against infection and inflammation. More recently, studies have revealed the anti-cancer activities of lysozyme in multiple types of tumors, potentially through its immune-modulatory activities. In this review, we summarized the major functions and underlying mechanisms of lysozymes derived from animal and plant sources. We highlighted the therapeutic applications and recent advances of lysozymes in cancers, hypertension, and viral diseases, aiming toseeking alternative therapies for standard medical treatment bypassing side effects. We also evaluated the role of lysozyme as a promising cancer marker for prognosis to indicate the outcomes recurrence for patients.
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Affiliation(s)
- Lin Jiang
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
| | - Yunhe Li
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
| | - Liye Wang
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, United States
| | - Jian Guo
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
| | - Wei Liu
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
| | - Guixian Meng
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
| | - Lei Zhang
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
| | - Miao Li
- Department of Neurosurgery, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Lina Cong
- School of Biological Engineering, Dalian Polytechnic University, Dalian, China
| | - Meiyan Sun
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
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7
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Anaerobic granulation of single culture Clostridium beijerinckii. FOOD AND BIOPRODUCTS PROCESSING 2021. [DOI: 10.1016/j.fbp.2021.09.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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8
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Process optimization of acetone-butanol-ethanol fermentation integrated with pervaporation for enhanced butanol production. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2021.108070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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9
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Zhang H, Yang P, Wang Z, Li M, Zhang J, Liu D, Chen Y, Ying H. Clostridium acetobutylicum Biofilm: Advances in Understanding the Basis. Front Bioeng Biotechnol 2021; 9:658568. [PMID: 34150727 PMCID: PMC8209462 DOI: 10.3389/fbioe.2021.658568] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 05/10/2021] [Indexed: 11/13/2022] Open
Abstract
Clostridium acetobutylicum is an important industrial platform capable of producing a variety of biofuels and bulk chemicals. Biofilm of C. acetobutylicum renders many production advantages and has been long and extensively applied in fermentation. However, molecular and genetic mechanisms underlying the biofilm have been much less studied and remain largely unknown. Here, we review studies to date focusing on C. acetobutylicum biofilms, especially on its physiological and molecular aspects, summarizing the production advantages, cell physiological changes, extracellular matrix components and regulatory genes of the biofilm. This represents the first review dedicated to the biofilm of C. acetobutylicum. Hopefully, it will deepen our understanding toward C. acetobutylicum biofilm and inspire more research to learn and develop more efficient biofilm processes in this industrially important bacterium.
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Affiliation(s)
- Huifang Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Pengpeng Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Zhenyu Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Mengting Li
- School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, China
| | - Jie Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Dong Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, China
| | - Yong Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Hanjie Ying
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, China
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10
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Jiang Y, Liu Y, Zhang X, Gao H, Mou L, Wu M, Zhang W, Xin F, Jiang M. Biofilm application in the microbial biochemicals production process. Biotechnol Adv 2021; 48:107724. [PMID: 33640404 DOI: 10.1016/j.biotechadv.2021.107724] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/18/2021] [Accepted: 02/21/2021] [Indexed: 11/16/2022]
Abstract
Biofilms can be naturally formed through the attachment of microorganisms on the supporting materials. However, natural biofilms formed in the environment may cause some detrimental effects, such as the equipment contamination and food safety issues et al. On the contrary, biofilms mediated microbial fermentation provides a promising approach for the efficient biochemicals production owing to the properties of self-immobilization, high resistance to toxic reactants and maintenance of long-term cells activity. While few reviews have specifically addressed the biological application of biofilms in the microbial fermentation process. Accordingly, this review will comprehensively summarize the biofilms formation mechanism and potential functions in the microbial fermentation process. Furthermore, the construction strategies for the formation of stable biofilms through synthetic biology technology or the modification of suitable supporting materials will be also discussed. The application of biofilms mediated fermentation will provide an outlook for the biorefinery platform in the future.
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Affiliation(s)
- Yujia Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Yansong Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Xiaoyu Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Hao Gao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Lu Mou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Mengdi Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Wenming Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 211800, PR China.
| | - Fengxue Xin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 211800, PR China.
| | - Min Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 211800, PR China
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11
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Li H, Wang H, Darwesh OM, Du J, Liu S, Li C, Fang J. Separation of biobutanol from ABE fermentation broth using lignin as adsorbent: A totally sustainable approach with effective utilization of lignocellulose. Int J Biol Macromol 2021; 174:11-21. [PMID: 33465363 DOI: 10.1016/j.ijbiomac.2021.01.095] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/11/2021] [Accepted: 01/14/2021] [Indexed: 12/18/2022]
Abstract
Adsorption is considered to be a promising butanol recovery method for solving the issue of inhibition in the ABE (acetone-butanol-ethanol) fermentation. As a byproduct in the second generation biobutanol industry, lignin was found to be a good adsorbent for the butanol enrichment. It is conducive to the full utilization of renewable lignocellulose biomass resource. Kinetic and equilibrium experiments indicated that lignin had a satisfactory adsorption rate and capacity that are comparable to those of many synthetic materials. Multicomponent adsorption experiments revealed that lignin had higher adsorption selectivity toward butanol than that of ethanol and acetone. The adsorption capacity of lignin for butanol first increased and then gradually decreased with increasing temperature. And maximum adsorption capacity reached 304.66 mg g-1 at 313 K. The inflection point of temperature is close to the ABE fermentation temperature of 310 K. The condensed butanol by desorption was 145 g L-1, with a satisfying regeneration performance. 1H NMR and FT-IR spectra indicated that the aromatic units of lignin formed π-systems with A/B/E. The π-system is particularly significant for butanol due to its longer hydrocarbon chain. These results could contribute to the emerging lignin-based materials for butanol separation.
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Affiliation(s)
- Hao Li
- National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Haoyang Wang
- National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Osama M Darwesh
- Agricultural Microbiology Department, Agricultural and Biological Research Division, National Research Centre, Cairo, Egypt
| | - Jingjing Du
- National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Shan Liu
- National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Chunli Li
- National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Jing Fang
- National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China.
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12
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Vees CA, Neuendorf CS, Pflügl S. Towards continuous industrial bioprocessing with solventogenic and acetogenic clostridia: challenges, progress and perspectives. J Ind Microbiol Biotechnol 2020; 47:753-787. [PMID: 32894379 PMCID: PMC7658081 DOI: 10.1007/s10295-020-02296-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 07/20/2020] [Indexed: 12/11/2022]
Abstract
The sustainable production of solvents from above ground carbon is highly desired. Several clostridia naturally produce solvents and use a variety of renewable and waste-derived substrates such as lignocellulosic biomass and gas mixtures containing H2/CO2 or CO. To enable economically viable production of solvents and biofuels such as ethanol and butanol, the high productivity of continuous bioprocesses is needed. While the first industrial-scale gas fermentation facility operates continuously, the acetone-butanol-ethanol (ABE) fermentation is traditionally operated in batch mode. This review highlights the benefits of continuous bioprocessing for solvent production and underlines the progress made towards its establishment. Based on metabolic capabilities of solvent producing clostridia, we discuss recent advances in systems-level understanding and genome engineering. On the process side, we focus on innovative fermentation methods and integrated product recovery to overcome the limitations of the classical one-stage chemostat and give an overview of the current industrial bioproduction of solvents.
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Affiliation(s)
- Charlotte Anne Vees
- Institute of Chemical, Environmental and Bioscience Engineering, Research Area Biochemical Engineering, Technische Universität Wien, Gumpendorfer Straße 1a, 1060 Vienna, Austria
| | - Christian Simon Neuendorf
- Institute of Chemical, Environmental and Bioscience Engineering, Research Area Biochemical Engineering, Technische Universität Wien, Gumpendorfer Straße 1a, 1060 Vienna, Austria
| | - Stefan Pflügl
- Institute of Chemical, Environmental and Bioscience Engineering, Research Area Biochemical Engineering, Technische Universität Wien, Gumpendorfer Straße 1a, 1060 Vienna, Austria
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Santos AG, de Albuquerque TL, Ribeiro BD, Coelho MAZ. In situ product recovery techniques aiming to obtain biotechnological products: A glance to current knowledge. Biotechnol Appl Biochem 2020; 68:1044-1057. [PMID: 32931049 DOI: 10.1002/bab.2024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 09/07/2020] [Indexed: 11/07/2022]
Abstract
Biotechnology and bioengineering techniques have been widely used in the production of biofuels, chemicals, pharmaceuticals, and food additives, being considered a "green" form of production because they use renewable and nonpolluting energy sources. On the other hand, in the traditional processes of production, the target product obtained by biotechnological routes must undergo several stages of purification, which makes these processes more expensive. In the past few years, some works have focused on processes that integrate fermentation to the recovery and purification steps necessary to obtain the final product required. This type of process is called in situ product recovery or extractive fermentation. However, there are some differences in the concepts of the techniques used in these bioprocesses. In this way, this review sought to compile relevant content on considerations and procedures that are being used in this field, such as evaporation, liquid-liquid extraction, permeation, and adsorption techniques. Also, the objective of this review was to approach the different configurations in the recent literature of the processes employed and the main bioproducts obtained, which can be used in the food, pharmaceutical, chemical, and/or fuel additives industry. We intended to elucidate concepts of these techniques, considered very recent, but which emerge as a promising alternative for the integration of bioprocesses.
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Affiliation(s)
- Ariane G Santos
- Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tiago L de Albuquerque
- Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Bernardo D Ribeiro
- Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Maria Alice Z Coelho
- Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Global View of Biofuel Butanol and Economics of Its Production by Fermentation from Sweet Sorghum Bagasse, Food Waste, and Yellow Top Presscake: Application of Novel Technologies. FERMENTATION-BASEL 2020. [DOI: 10.3390/fermentation6020058] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Worldwide, there are various feedstocks such as straws, corn stover, sugarcane bagasse, sweet sorghum bagasse (SSB), grasses, leaves, whey permeate, household organic waste, and food waste (FW) that can be converted to valuable biofuels such as butanol. For the present studies, an economic analysis was performed to compare butanol production from three feedstocks (SSB; FW; and yellow top presscake, YTP or YT) using a standard process and an advanced integrated process design. The total plant capacity was set at 170,000–171,000 metric tons of total acetone butanol ethanol (ABE) per year (99,300 tons of just butanol per year). Butanol production from SSB typically requires pretreatment, separate hydrolysis, fermentation, and product recovery (SHFR). An advanced process was developed in which the last three steps were combined into a single unit operation for simultaneous saccharification, fermentation, and recovery (SSFR). For the SHFR and SSFR plants, the total capital investments were estimated as $213.72 × 106 and $198.16 × 106, respectively. It was further estimated that the minimum butanol selling price (using SSB as a feedstock) for the two processes were $1.14/kg and $1.05/kg. Therefore, SSFR lowered the production cost markedly compared to that of the base case. Butanol made using FW had an estimated minimum selling price of only $0.42/kg. This low selling price is because the FW to butanol process does not require pretreatment, hydrolysis, and cellulolytic enzymes. For this plant, the total capital investment was projected to be $107.26 × 106. The butanol selling price using YTP as a feedstock was at $0.73/kg and $0.79/kg with total capital investments for SSFR and SHFR of $122.58 × 106 and $132.21 × 106, respectively. In the Results and Discussion section, the availability of different feedstocks in various countries such as Brazil, the European Union, New Zealand, Denmark, and the United States are discussed. Additionally, the use of various microbial strains and product recovery technologies are also discussed.
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Effects of Spo0A on Clostridium acetobutylicum with an emphasis on biofilm formation. World J Microbiol Biotechnol 2020; 36:80. [PMID: 32444896 DOI: 10.1007/s11274-020-02859-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 05/18/2020] [Indexed: 02/08/2023]
Abstract
Clostridium acetobutylicum is a well-known strain for biofuel production. In previous work, it was found that this strain formed biofilm readily during fermentation processes. Biofilm formation could protect cells and enhance productivities under environmental stresses in our previous work. To explore the molecular mechanism of biofilm formation, Spo0A of C. acetobutylicum was selected to investigate its influences on biofilm formation and other physiological performances. When spo0A gene was disrupted, the spo0A mutant could hardly form biofilm. The aggregation and adhesion abilities of the spo0A mutant as well as its swarming motility were dramatically reduced compared to those of wild type strain. Sporulation was also negatively influenced by spo0A disruption, and solvent production was almost undetectable in the spo0A mutant fermentation. Furthermore, proteomic differences between wild type strain and the spo0A mutant were consistent with physiological performances. This is the first study confirming a genetic clue to C. acetobutylicum biofilm and will be valuable for biofilm optimization through genetic engineering in the future.
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Li S, Huang L, Ke C, Pang Z, Liu L. Pathway dissection, regulation, engineering and application: lessons learned from biobutanol production by solventogenic clostridia. BIOTECHNOLOGY FOR BIOFUELS 2020; 13:39. [PMID: 32165923 PMCID: PMC7060580 DOI: 10.1186/s13068-020-01674-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 02/04/2020] [Indexed: 06/01/2023]
Abstract
The global energy crisis and limited supply of petroleum fuels have rekindled the interest in utilizing a sustainable biomass to produce biofuel. Butanol, an advanced biofuel, is a superior renewable resource as it has a high energy content and is less hygroscopic than other candidates. At present, the biobutanol route, employing acetone-butanol-ethanol (ABE) fermentation in Clostridium species, is not economically competitive due to the high cost of feedstocks, low butanol titer, and product inhibition. Based on an analysis of the physiological characteristics of solventogenic clostridia, current advances that enhance ABE fermentation from strain improvement to product separation were systematically reviewed, focusing on: (1) elucidating the metabolic pathway and regulation mechanism of butanol synthesis; (2) enhancing cellular performance and robustness through metabolic engineering, and (3) optimizing the process of ABE fermentation. Finally, perspectives on engineering and exploiting clostridia as cell factories to efficiently produce various chemicals and materials are also discussed.
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Affiliation(s)
- Shubo Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004 China
| | - Li Huang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004 China
| | - Chengzhu Ke
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004 China
| | - Zongwen Pang
- College of Life Science and Technology, Guangxi University, Nanning, 530005 China
| | - Liming Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122 China
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Nimbalkar P, Khedkar MA, Chavan PV, Bankar SB. Enhanced Biobutanol Production in Folic Acid-Induced Medium by Using Clostridium acetobutylicum NRRL B-527. ACS OMEGA 2019; 4:12978-12982. [PMID: 31460424 PMCID: PMC6690572 DOI: 10.1021/acsomega.9b00583] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 07/18/2019] [Indexed: 05/05/2023]
Abstract
The conventional acetone-butanol-ethanol fermentation process suffers from several key hurdles viz. low solvent titer, insufficient yield and productivity, and solvent intolerance which largely affect butanol commercialization. To counteract these issues, the effect of stimulator, namely, folic acid was investigated in the present study to improve butanol titer. Folic acid is involved in biosynthesis of a diverse range of cellular components, which subsequently alter the amino acid balance. Therefore, different concentrations of folic acid were screened, and 10 mg/L supplementation resulted in a maximum butanol production of 10.78 ± 0.09 g/L with total solvents of 18.91 ± 0.21 g/L. Folic acid addition at different time intervals was also optimized to get additional improvements in final butanol concentration. Overall, folic acid supplementation resulted in two-fold increase in butanol concentration and thus could be considered as a promising strategy to enhance solvent titers.
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Affiliation(s)
- Pranhita
R. Nimbalkar
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O.
Box 16100, Aalto FI-00076, Finland
- Department
of Chemical Engineering, Bharati Vidyapeeth
Deemed University College of Engineering, Pune 411043, India
| | - Manisha A. Khedkar
- Department
of Chemical Engineering, Bharati Vidyapeeth
Deemed University College of Engineering, Pune 411043, India
| | - Prakash V. Chavan
- Department
of Chemical Engineering, Bharati Vidyapeeth
Deemed University College of Engineering, Pune 411043, India
- E-mail: . Phone: +91-020-24107390. Fax: +91-020-24372998 (P.V.C.)
| | - Sandip B. Bankar
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O.
Box 16100, Aalto FI-00076, Finland
- E-mail: , . Phone: +358 505777898. Fax: +358 9462373 (S.B.B.)
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Mukherjee M, Sarkar P, Goswami G, Das D. Regulation of butanol biosynthesis in Clostridium acetobutylicum ATCC 824 under the influence of zinc supplementation and magnesium starvation. Enzyme Microb Technol 2019; 129:109352. [PMID: 31307579 DOI: 10.1016/j.enzmictec.2019.05.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/18/2019] [Accepted: 05/21/2019] [Indexed: 12/25/2022]
Abstract
Present study reports modulation in butanol biosynthesis in Clostridium acetobutylicum ATCC 824 under the influence of zinc supplementation or magnesium starvation either individually or in combination. An improvement in butanol titer from 11.83 g L-1 in control to 13.72 g L-1, 15.79 g L-1, and 19.18 g L-1 was achieved when organism was grown on magnesium starved, zinc supplemented and combined zinc supplemented-magnesium starved fermentation medium, respectively. The elevation in butanol biosynthesis was associated with raised glucose utilization, reduced ethanol production and early induction of solventogenesis. Change in these phenotypic traits of the organism may be attributed to multi-level modulation in central carbon metabolism e.g., upregulation of glycolytic pathway; upregulation in thiolase activity; key intermediate enzyme for biosynthesis of acids and solvent; upregulation in the activity of butyrylaldehyde dehydrogenase & butanol dehydrogenase, the enzymes responsible for butanol biosynthesis and downregulation in alcohol dehydrogenase, redirecting carbon flux from ethanol to butanol.
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Affiliation(s)
- Mayurketan Mukherjee
- Department of Biosciences & Bioengineering, Indian Institute of Technology, Guwahati, Assam 781039, India; DBT-PAN IIT Centre for Bioenergy, Indian Institute of Technology, Guwahati, Assam 781039, India
| | - Payel Sarkar
- Department of Biosciences & Bioengineering, Indian Institute of Technology, Guwahati, Assam 781039, India; DBT-PAN IIT Centre for Bioenergy, Indian Institute of Technology, Guwahati, Assam 781039, India
| | - Gargi Goswami
- Department of Biosciences & Bioengineering, Indian Institute of Technology, Guwahati, Assam 781039, India
| | - Debasish Das
- Department of Biosciences & Bioengineering, Indian Institute of Technology, Guwahati, Assam 781039, India; DBT-PAN IIT Centre for Bioenergy, Indian Institute of Technology, Guwahati, Assam 781039, India.
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19
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Woo HC, Kim YH. Eco-efficient recovery of bio-based volatile C2-6 fatty acids. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:92. [PMID: 31044005 PMCID: PMC6477716 DOI: 10.1186/s13068-019-1433-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 04/12/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Volatile fatty acids (VFAs) are produced by fermentation of various bio-sources and human wastes at minimal cost; sometimes, even sources having a prepaid processing fee were used. However, low concentrations of VFAs in water have prevented their commercial production, even with modern separation technologies, due to the high operating costs. We have applied newly developed solvents, selected by chemical structure similarity, to the separation of five different VFAs. RESULTS Since most of the water was separated by extraction using hexyl acetate and nonyl acetate, the utilities necessary for solvent recovery and product purification were a fraction of those required by the existing VFAs' separation processes. The solvents separated almost all the water in the feed at the extraction stage, consuming no energy. The energy use in this study is only 34% of the lowest case use among various processes of either distillation-only or combined extraction-distillation. CONCLUSIONS The performance evaluation of the proposed VFAs separation process showed that product recovery was 99% and acid purity was 99.5% with eco-scores of 70% lower than those of the current processes.
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Affiliation(s)
- Hee Chul Woo
- Dept. of Chemical Engineering, Pukyong National University, 365 Shinsun-ro, Nam-gu, Busan, 48513 South Korea
| | - Young Han Kim
- Dept. of Chemical Engineering, Pukyong National University, 365 Shinsun-ro, Nam-gu, Busan, 48513 South Korea
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20
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Ding M, Chen B, Ji X, Zhou J, Wang H, Tian X, Feng X, Yue H, Zhou Y, Wang H, Wu J, Yang P, Jiang Y, Mao X, Xiao G, Zhong C, Xiao W, Li B, Qin L, Cheng J, Yao M, Wang Y, Liu H, Zhang L, Yu L, Chen T, Dong X, Jia X, Zhang S, Liu Y, Chen Y, Chen K, Wu J, Zhu C, Zhuang W, Xu S, Jiao P, Zhang L, Song H, Yang S, Xiong Y, Li Y, Zhang Y, Zhuang Y, Su H, Fu W, Huang Y, Li C, Zhao ZK, Sun Y, Chen GQ, Zhao X, Huang H, Zheng Y, Yang L, Su Z, Ma G, Ying H, Chen J, Tan T, Yuan Y. Biochemical engineering in China. REV CHEM ENG 2019. [DOI: 10.1515/revce-2017-0035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Abstract
Chinese biochemical engineering is committed to supporting the chemical and food industries, to advance science and technology frontiers, and to meet major demands of Chinese society and national economic development. This paper reviews the development of biochemical engineering, strategic deployment of these technologies by the government, industrial demand, research progress, and breakthroughs in key technologies in China. Furthermore, the outlook for future developments in biochemical engineering in China is also discussed.
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Affiliation(s)
- Mingzhu Ding
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University , Tianjin 300072 , China
| | - Biqiang Chen
- Beijing University of Chemical Technology , Beijing 100029 , China
| | - Xiaojun Ji
- College of Pharmaceutical Sciences, Nanjing Tech University , Nanjing 211816 , China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University , Nanjing 210009 , China
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University , Nanjing 210009 , China
| | - Jingwen Zhou
- School of Biotechnology, Jiangnan University , Wuxi 214122 , China
| | - Huiyuan Wang
- Shanghai Information Center of Life Sciences (SICLS), Shanghai Institute of Biology Sciences (SIBS), Chinese Academy of Sciences , Shanghai 200031 , China
| | - Xiwei Tian
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology , Shanghai 200237 , China
| | - Xudong Feng
- School of Life Science, Beijing Institute of Technology , Beijing 100081 , China
| | - Hua Yue
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences , Beijing 100190 , China
| | - Yongjin Zhou
- Division of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023 , China
| | - Hailong Wang
- Shandong University–Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, School of Life Science, Shandong University , Jinan 250100 , China
| | - Jianping Wu
- Institute of Biology Engineering, College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027 , China
| | - Pengpeng Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University , Nanjing 210009 , China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009 , China
| | - Yu Jiang
- Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences , Shanghai 200032 , China
| | - Xuming Mao
- Institute of Pharmaceutical Biotechnology, Zhejiang University , Hangzhou 310058 , China
| | - Gang Xiao
- Beijing University of Chemical Technology , Beijing 100029 , China
| | - Cheng Zhong
- Key Laboratory of Industrial Fermentation Microbiology (Ministry of Education), Tianjin University of Science and Technology , Tianjin 300457 , China
| | - Wenhai Xiao
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University , Tianjin 300072 , China
| | - Bingzhi Li
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University , Tianjin 300072 , China
| | - Lei Qin
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University , Tianjin 300072 , China
| | - Jingsheng Cheng
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University , Tianjin 300072 , China
| | - Mingdong Yao
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University , Tianjin 300072 , China
| | - Ying Wang
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University , Tianjin 300072 , China
| | - Hong Liu
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University , Tianjin 300072 , China
| | - Lin Zhang
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
| | - Linling Yu
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
| | - Tao Chen
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
| | - Xiaoyan Dong
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
| | - Xiaoqiang Jia
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
| | - Songping Zhang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences , Beijing 100190 , China
| | - Yanfeng Liu
- School of Biotechnology, Jiangnan University , Wuxi 214122 , China
| | - Yong Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University , Nanjing 210009 , China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009 , China
| | - Kequan Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University , Nanjing 210009 , China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009 , China
| | - Jinglan Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University , Nanjing 210009 , China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009 , China
| | - Chenjie Zhu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University , Nanjing 210009 , China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009 , China
| | - Wei Zhuang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University , Nanjing 210009 , China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009 , China
| | - Sheng Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University , Nanjing 210009 , China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009 , China
| | - Pengfei Jiao
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University , Nanjing 210009 , China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009 , China
| | - Lei Zhang
- Tianjin Ltd. of BoyaLife Inc. , Tianjin 300457 , China
| | - Hao Song
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University , Tianjin 300072 , China
| | - Sheng Yang
- Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences , Shanghai 200032 , China
| | - Yan Xiong
- Shanghai Information Center of Life Sciences (SICLS), Shanghai Institute of Biology Sciences (SIBS), Chinese Academy of Sciences , Shanghai 200031 , China
| | - Yongquan Li
- Institute of Pharmaceutical Biotechnology, Zhejiang University , Hangzhou 310058 , China
| | - Youming Zhang
- Shandong University–Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, School of Life Science, Shandong University , Jinan 250100 , China
| | - Yingping Zhuang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology , Shanghai 200237 , China
| | - Haijia Su
- Beijing University of Chemical Technology , Beijing 100029 , China
| | - Weiping Fu
- China National Center of Biotechnology Development , Beijing , China
| | - Yingming Huang
- China National Center of Biotechnology Development , Beijing , China
| | - Chun Li
- School of Life Science, Beijing Institute of Technology , Beijing 100081 , China
| | - Zongbao K. Zhao
- Division of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023 , China
| | - Yan Sun
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
| | - Guo-Qiang Chen
- Center of Synthetic and Systems Biology, School of Life Sciences, Tsinghua University , Beijing 100084 , China
| | - Xueming Zhao
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
| | - He Huang
- College of Pharmaceutical Sciences, Nanjing Tech University , Nanjing 211816 , China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University , Nanjing 210009 , China
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University , Nanjing 210009 , China
| | - Yuguo Zheng
- College of Biotechnology and Bioengineering, Zhejiang University of Technology , Hangzhou 310014 , China
| | - Lirong Yang
- Institute of Biology Engineering, College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027 , China
| | - Zhiguo Su
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences , Beijing 100190 , China
| | - Guanghui Ma
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences , Beijing 100190 , China
| | - Hanjie Ying
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University , Nanjing 210009 , China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009 , China
| | - Jian Chen
- School of Biotechnology, Jiangnan University , Wuxi 214122 , China
| | - Tianwei Tan
- Beijing University of Chemical Technology , Beijing 100029 , China
| | - Yingjin Yuan
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , China
- SynBio Research Platform, Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), Tianjin University , Tianjin 300072 , China
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Yang L, Zheng C, Chen Y, Shi X, Ying Z, Ying H. Nitric oxide increases biofilm formation in Saccharomyces cerevisiae by activating the transcriptional factor Mac1p and thereby regulating the transmembrane protein Ctr1. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:30. [PMID: 30809273 PMCID: PMC6375214 DOI: 10.1186/s13068-019-1359-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 01/16/2019] [Indexed: 05/04/2023]
Abstract
BACKGROUND Biofilms with immobilized cells encased in extracellular polymeric substance are beneficial for industrial fermentation. Their formation is regulated by various factors, including nitric oxide (NO), which is recognized as a quorum-sensing and signal molecule. The mechanisms by which NO regulates bacterial biofilms have been studied extensively and deeply, but were rarely studied in fungi. In this study, we observed the effects of low concentrations of NO on biofilm formation in Saccharomyces cerevisiae. Transcriptional and proteomic analyses were applied to study the mechanism of this regulation. RESULTS Adding low concentrations of NO donors (SNP and NOC-18) enhanced biofilm formation of S. cerevisiae in immobilized carriers and plastics. Transcriptional and proteomic analyses revealed that expression levels of genes regulated by the transcription factor Mac1p was upregulated in biofilm cells under NO treatment. MAC1 promoted yeast biofilm formation which was independent of flocculation gene FLO11. Increased copper and iron contents, both of which were controlled by Mac1p in the NO-treated and MAC1-overexpressing cells, were not responsible for the increased biofilm formation. CTR1, one out of six genes regulated by MAC1, plays an important role in biofilm formation. Moreover, MAC1 and CTR1 contributed to the cells' resistance to ethanol by enhanced biofilm formation. CONCLUSIONS These findings suggest that a mechanism for NO-mediated biofilm formation, which involves the regulation of CTR1 expression levels by activating its transcription factor Mac1p, leads to enhanced biofilm formation. The role of CTR1 protein in yeast biofilm formation may be due to the hydrophobic residues in its N-terminal extracellular domain, and further research is needed. This work offers a possible explanation for yeast biofilm formation regulated by NO and provides approaches controlling biofilm formation in industrial immobilized fermentation by manipulating expression of genes involved in biofilm formation.
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Affiliation(s)
- Leyun Yang
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Cheng Zheng
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Yong Chen
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Xinchi Shi
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
- College of Life Science, Nantong University, Nantong, China
| | | | - Hanjie Ying
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
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22
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Liu J, Guo T, Luo Y, Chai X, Wu J, Zhao W, Jiao P, Luo F, Lin Q. Enhancement of Monascus pigment productivity via a simultaneous fermentation process and separation system using immobilized-cell fermentation. BIORESOURCE TECHNOLOGY 2019; 272:552-560. [PMID: 30396112 DOI: 10.1016/j.biortech.2018.10.072] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/25/2018] [Accepted: 10/26/2018] [Indexed: 06/08/2023]
Abstract
A mutant Monascus purpureus strain, M183, which produced monascus pigments (MPs) at 8460 U/g via solid-state batch-fermentation, was generated using the atmospheric and room temperature plasma (ARTP) mutation system. The optimal glucose concentration (80 g/L) in traditional fermentation media that yielded the highest MPs productivity was determined. Response surface methodology (RSM) was applied to maximize MPs production using liquid-state batch-fermentation. Under optimal conditions (0.58 g/L MgSO4·7H2O, 0.02 g/L ZnSO4·7H2O, 0.02 g/L FeSO4·7H2O and 4.85 g/L NH4NO3), 207.67 U/mL of MPs were produced with 98.12% validity based on the predicted value. Extracellular MPs production increased significantly to 35.52 U/mL, compared to 14.19 U/mL of the original strain, M. purpureus LQ-6. M. purpureus spores immobilized in sodium alginate were studied. A simultaneous fermentation and separation system was established for MPs using the novel absorption resin LX300C to enhance production efficiency of extracellular MPs.
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Affiliation(s)
- Jun Liu
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Ting Guo
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Yunchuan Luo
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Xueying Chai
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Jingyan Wu
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Wen Zhao
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Pengfei Jiao
- School of Life Science and Technology, Nanyang Normal University, No. 1638 Wolong Road, Nanyang, Henan 473061, China
| | - Feijun Luo
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Qinlu Lin
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Hunan Key Laboratory of Processed Food for Special Medical Purpose, College of Food Science and Engineering, National Engineering Laboratory for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, Hunan 410004, China.
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23
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Liu D, Yang Z, Chen Y, Zhuang W, Niu H, Wu J, Ying H. Clostridium acetobutylicum grows vegetatively in a biofilm rich in heteropolysaccharides and cytoplasmic proteins. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:315. [PMID: 30479660 PMCID: PMC6245871 DOI: 10.1186/s13068-018-1316-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 11/13/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Biofilms are cell communities wherein cells are embedded in a self-produced extracellular polymeric substances (EPS). The biofilm of Clostridium acetobutylicum confers the cells superior phenotypes and has been extensively exploited to produce a variety of liquid biofuels and bulk chemicals. However, little has been known about the physiology of C. acetobutylicum in biofilm as well as the composition and biosynthesis of the EPS. Thus, this study is focused on revealing the cell physiology and EPS composition of C. acetobutylicum biofilm. RESULTS Here, we revealed a novel lifestyle of C. acetobutylicum in biofilm: elimination of sporulation and vegetative growth. Extracellular polymeric substances and wire-like structures were also observed in the biofilm. Furthermore, for the first time, the biofilm polysaccharides and proteins were isolated and characterized. The biofilm contained three heteropolysaccharides. The major fraction consisted of predominantly glucose, mannose and aminoglucose. Also, a great variety of proteins including many non-classically secreted proteins moonlighting as adhesins were found considerably present in the biofilm, with GroEL, a S-layer protein and rubrerythrin being the most abundant ones. CONCLUSIONS This study evidenced that vegetative C. acetobutylicum cells rather than commonly assumed spore-forming cells were essentially the solvent-forming cells. The abundant non-classically secreted moonlighting proteins might be important for the biofilm formation. This study provides the first physiological and molecular insights into C. acetobutylicum biofilm which should be valuable for understanding and development of the biofilm-based processes.
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Affiliation(s)
- Dong Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211800 China
- Jiangsu National Synergetic Innovation Center for Advance Material (SICAM), No. 30, Puzhu South Road, Nanjing, 211800 China
| | - Zhengjiao Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211800 China
| | - Yong Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211800 China
- Jiangsu National Synergetic Innovation Center for Advance Material (SICAM), No. 30, Puzhu South Road, Nanjing, 211800 China
| | - Wei Zhuang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211800 China
- Jiangsu National Synergetic Innovation Center for Advance Material (SICAM), No. 30, Puzhu South Road, Nanjing, 211800 China
| | - Huanqing Niu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211800 China
- Jiangsu National Synergetic Innovation Center for Advance Material (SICAM), No. 30, Puzhu South Road, Nanjing, 211800 China
| | - Jinglan Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211800 China
- Jiangsu National Synergetic Innovation Center for Advance Material (SICAM), No. 30, Puzhu South Road, Nanjing, 211800 China
| | - Hanjie Ying
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211800 China
- Jiangsu National Synergetic Innovation Center for Advance Material (SICAM), No. 30, Puzhu South Road, Nanjing, 211800 China
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24
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Ying Z, Zhang X. Adaptation of intestine-based microbial functions to bioethanol production. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2017.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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25
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Kushwaha D, Srivastava N, Mishra I, Upadhyay SN, Mishra PK. Recent trends in biobutanol production. REV CHEM ENG 2018. [DOI: 10.1515/revce-2017-0041] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Abstract
Finite availability of conventional fossil carbonaceous fuels coupled with increasing pollution due to their overexploitation has necessitated the quest for renewable fuels. Consequently, biomass-derived fuels are gaining importance due to their economic viability and environment-friendly nature. Among various liquid biofuels, biobutanol is being considered as a suitable and sustainable alternative to gasoline. This paper reviews the present state of the preprocessing of the feedstock, biobutanol production through fermentation and separation processes. Low butanol yield and its toxicity are the major bottlenecks. The use of metabolic engineering and integrated fermentation and product recovery techniques has the potential to overcome these challenges. The application of different nanocatalysts to overcome the existing challenges in the biobutanol field is gaining much interest. For the sustainable production of biobutanol, algae, a third-generation feedstock has also been evaluated.
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Affiliation(s)
- Deepika Kushwaha
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU) , Varanasi 221005 , India
| | - Neha Srivastava
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU) , Varanasi 221005 , India
| | - Ishita Mishra
- Green Brick Eco Solutions, Okha Industrial Area , New Delhi 110020 , India
| | - Siddh Nath Upadhyay
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU) , Varanasi 221005 , India
| | - Pradeep Kumar Mishra
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU) , Varanasi 221005 , India
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26
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Ma X, Li Z, Zhou A, Yue X. Energy recovery from tubular microbial electrolysis cell with stainless steel mesh as cathode. ROYAL SOCIETY OPEN SCIENCE 2017; 4:170967. [PMID: 29308237 PMCID: PMC5750004 DOI: 10.1098/rsos.170967] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 11/01/2017] [Indexed: 06/07/2023]
Abstract
In comparison to the transportation and storage of hydrogen, methane has advantages in the practical application, while the emerging product termed as 'biohythane' could be an alternative to pure hydrogen or methane in a new form of energy recovery from microbial electrolysis cell (MEC). However, the cathodic catalyst even for biohythane still bothers the performance and cost of total MEC. Herein, we fabricated the MEC reactor with surrounding stainless steel mesh (SSM) to investigate the feasibility of stainless steel mesh as an alternative to precious metal in biohythane production. The columbic efficiency (CE) of anode was around at 80%, representing the SSM would not limit the activity of anodic biofilm; the SEM image and ATP results accordingly indicated the anodic biofilm was mature and well constructed. The main contribution of methanogens that quantified by qPCR belonged to the hydrogenotrophic group (Methanobacteriales) at cathode. The energy efficiency reached more than 100%, reached up to approximately 150%, potentially suggesting the energetic feasibility of the application to obtain biohythane with SSM in scale-up MEC. Benefiting from the likely tubular configuration, the ohmic resistance of cathode was very low, while the main limitation associated with charge transfer was mainly caused by biofilm formation. The total performances of SSM used in the tubular configuration for biohythane production provide an insight into the implementation of non-precious metal in future scale-up pilot with energy recovery.
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Affiliation(s)
- Xiaoli Ma
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Zhifeng Li
- Xinneng Nuclear Engineering Co., Ltd of CNNC, Taiyuan 030024, China
| | - Aijuan Zhou
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Xiuping Yue
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
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27
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Yoshimoto S, Ohara Y, Nakatani H, Hori K. Reversible bacterial immobilization based on the salt-dependent adhesion of the bacterionanofiber protein AtaA. Microb Cell Fact 2017; 16:123. [PMID: 28720107 PMCID: PMC5516326 DOI: 10.1186/s12934-017-0740-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 07/10/2017] [Indexed: 01/05/2023] Open
Abstract
Background Immobilization of microbial cells is an important strategy for the efficient use of whole-cell catalysts because it simplifies product separation, enables the cell concentration to be increased, stabilizes enzymatic activity, and permits repeated or continuous biocatalyst use. However, conventional immobilization methods have practical limitations, such as limited mass transfer in the inner part of a gel, gel fragility, cell leakage from the support matrix, and adverse effects on cell viability and catalytic activity. We previously showed a new method for bacterial cell immobilization using AtaA, a member of the trimeric autotransporter adhesin family found in Acinetobacter sp. Tol 5. This approach is expected to solve the drawbacks of conventional immobilization methods. However, similar to all other immobilization methods, the use of support materials increases the cost of bioprocesses and subsequent waste materials. Results We found that the stickiness of the AtaA molecule isolated from Tol 5 cells is drastically diminished at ionic strengths lower than 10 mM and that it cannot adhere in deionized water, which also inhibits cell adhesion mediated by AtaA. Cells immobilized on well plates and polyurethane foam in a salt solution were detached in deionized water by rinsing and shaking, respectively. The detached cells regained their adhesiveness in a salt solution and could rapidly be re-immobilized. The cells expressing the ataA gene maintained their adhesiveness throughout four repeated immobilization and detachment cycles and could be repeatedly immobilized to polyurethane foam by a 10-min shake in a flask. We also demonstrated that both bacterial cells and a support used in a reaction could be reused for a different type of reaction after detachment of the initially immobilized cells from the support and a subsequent immobilization step. Conclusions We invented a unique reversible immobilization method based on the salt-dependent adhesion of the AtaA molecule that allows us to reuse bacterial cells and supports by a simple manipulation involving a deionized water wash. This mitigates problems caused by the use of support materials and greatly helps to enhance the efficiency and productivity of microbial production processes. Electronic supplementary material The online version of this article (doi:10.1186/s12934-017-0740-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Shogo Yoshimoto
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Yuki Ohara
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Hajime Nakatani
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Katsutoshi Hori
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
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28
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Outram V, Lalander CA, Lee JGM, Davies ET, Harvey AP. Applied in situ product recovery in ABE fermentation. Biotechnol Prog 2017; 33:563-579. [PMID: 28188696 PMCID: PMC5485034 DOI: 10.1002/btpr.2446] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 01/31/2017] [Indexed: 12/12/2022]
Abstract
The production of biobutanol is hindered by the product's toxicity to the bacteria, which limits the productivity of the process. In situ product recovery of butanol can improve the productivity by removing the source of inhibition. This paper reviews in situ product recovery techniques applied to the acetone butanol ethanol fermentation in a stirred tank reactor. Methods of in situ recovery include gas stripping, vacuum fermentation, pervaporation, liquid–liquid extraction, perstraction, and adsorption, all of which have been investigated for the acetone, butanol, and ethanol fermentation. All techniques have shown an improvement in substrate utilization, yield, productivity or both. Different fermentation modes favored different techniques. For batch processing gas stripping and pervaporation were most favorable, but in fed‐batch fermentations gas stripping and adsorption were most promising. During continuous processing perstraction appeared to offer the best improvement. The use of hybrid techniques can increase the final product concentration beyond that of single‐stage techniques. Therefore, the selection of an in situ product recovery technique would require comparable information on the energy demand and economics of the process. © 2017 American Institute of Chemical Engineers Biotechnol. Prog., 33:563–579, 2017
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Affiliation(s)
- Victoria Outram
- School of Chemical Engineering and Advanced Material, Newcastle University, Newcastle-upon-Tyne, U.K.,Green Biologics Ltd, 45A Western Avenue, Milton Park, Abingdon, Oxfordshire, U.K
| | - Carl-Axel Lalander
- Green Biologics Ltd, 45A Western Avenue, Milton Park, Abingdon, Oxfordshire, U.K
| | - Jonathan G M Lee
- School of Chemical Engineering and Advanced Material, Newcastle University, Newcastle-upon-Tyne, U.K
| | - E Timothy Davies
- Green Biologics Ltd, 45A Western Avenue, Milton Park, Abingdon, Oxfordshire, U.K
| | - Adam P Harvey
- School of Chemical Engineering and Advanced Material, Newcastle University, Newcastle-upon-Tyne, U.K
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29
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Kim B, Jang H, Eom MH, Lee JH. Model-Based Optimization of Cyclic Operation of Acetone-Butanol-Ethanol (ABE) Fermentation Process with ex Situ Butanol Recovery (ESBR) for Continuous Biobutanol Production. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b02670] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Boeun Kim
- Department
of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Hong Jang
- Department
of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Moon-Ho Eom
- R&D Center, GS Caltex Corporation, 359 Expo-ro, Yuseong-gu, Daejeon 305-380, Republic of Korea
| | - Jay H. Lee
- Department
of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
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30
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Zhuang W, Liu X, Yang J, Wu J, Zhou J, Chen Y, Liu D, Ying H. Immobilization of Clostridium acetobutylicum onto natural textiles and its fermentation properties. Microb Biotechnol 2017; 10:502-512. [PMID: 28112488 PMCID: PMC5328812 DOI: 10.1111/1751-7915.12557] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 10/25/2016] [Accepted: 11/14/2016] [Indexed: 11/30/2022] Open
Abstract
Immobilized fermentation has several advantages over traditional suspended fermentation, including simple and continuous operation, improved fermentation performance and reduced cost. Carrier is the most adjustable element among three elements of immobilized fermentation, including carrier, bacteria and environment. In this study, we characterized carrier roughness and surface properties of four types of natural fibres, including linen, cotton, bamboo fibre and silk, to assess their effects on cell immobilization, fermentation performance and stability. Linen with higher specific surface area and roughness could adsorb more bacteria during immobilized fermentation, thereby improving fermentation performance; thus, linen was selected as a suitable carrier and was applied for acetone–butanol–ethanol (ABE) fermentation. To further improve fermentation performance, we also found that microbes of Clostridium acetobutylicum were negatively charged surfaces during fermentation. Therefore, we then modified linen with polyetherimide (PEI) and steric acid (SA) to increase surface positive charge and improve surface property. During ABE fermentation, the adhesion between modified linen and bacteria was increased, adsorption was increased about twofold compared with that of unmodified linen, and butanol productivity was increased 8.16% and 6.80% with PEI‐ and SA‐modified linen as carriers respectively.
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Affiliation(s)
- Wei Zhuang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing, 210009, China.,College of Biotechnology and Pharmaceutical Engineering, National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, China.,Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, China
| | - Xiaojing Liu
- College of Biotechnology and Pharmaceutical Engineering, National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, China
| | - Jing Yang
- College of Biotechnology and Pharmaceutical Engineering, National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, China
| | - Jinglan Wu
- College of Biotechnology and Pharmaceutical Engineering, National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, China
| | - Jingwei Zhou
- College of Biotechnology and Pharmaceutical Engineering, National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, China
| | - Yong Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing, 210009, China.,College of Biotechnology and Pharmaceutical Engineering, National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, China
| | - Dong Liu
- College of Biotechnology and Pharmaceutical Engineering, National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, China
| | - Hanjie Ying
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing, 210009, China.,College of Biotechnology and Pharmaceutical Engineering, National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, China.,Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, China
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31
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Cai D, Hu S, Miao Q, Chen C, Chen H, Zhang C, Li P, Qin P, Tan T. Two-stage pervaporation process for effective in situ removal acetone-butanol-ethanol from fermentation broth. BIORESOURCE TECHNOLOGY 2017; 224:380-388. [PMID: 27839857 DOI: 10.1016/j.biortech.2016.11.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 11/02/2016] [Accepted: 11/03/2016] [Indexed: 06/06/2023]
Abstract
Two-stage pervaporation for ABE recovery from fermentation broth was studied to reduce the energy cost. The permeate after the first stage in situ pervaporation system was further used as the feedstock in the second stage of pervaporation unit using the same PDMS/PVDF membrane. A total 782.5g/L of ABE (304.56g/L of acetone, 451.98g/L of butanol and 25.97g/L of ethanol) was achieved in the second stage permeate, while the overall acetone, butanol and ethanol separation factors were: 70.7-89.73, 70.48-84.74 and 9.05-13.58, respectively. Furthermore, the theoretical evaporation energy requirement for ABE separation in the consolidate fermentation, which containing two-stage pervaporation and the following distillation process, was estimated less than ∼13.2MJ/kg-butanol. The required evaporation energy was only 36.7% of the energy content of butanol. The novel two-stage pervaporation process was effective in increasing ABE production and reducing energy consumption of the solvents separation system.
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Affiliation(s)
- Di Cai
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Song Hu
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Qi Miao
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Changjing Chen
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Huidong Chen
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China; Center for Process Simulation & Optimization, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Changwei Zhang
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Ping Li
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Peiyong Qin
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Tianwei Tan
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
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32
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Zhang S, Huang X, Qu C, Suo Y, Liao Z, Wang J. Extractive fermentation for enhanced isopropanol and n -butanol production with mixtures of water insoluble aliphatic acids and oleyl alcohol. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2016.10.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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33
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Xue C, Liu F, Xu M, Tang IC, Zhao J, Bai F, Yang ST. Butanol production in acetone-butanol-ethanol fermentation with in situ product recovery by adsorption. BIORESOURCE TECHNOLOGY 2016; 219:158-168. [PMID: 27484672 DOI: 10.1016/j.biortech.2016.07.111] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 07/25/2016] [Accepted: 07/26/2016] [Indexed: 06/06/2023]
Abstract
Activated carbon Norit ROW 0.8, zeolite CBV901, and polymeric resins Dowex Optipore L-493 and SD-2 with high specific loadings and partition coefficients were studied for n-butanol adsorption. Adsorption isotherms were found to follow Langmuir model, which can be used to estimate the amount of butanol adsorbed in acetone-butanol-ethanol (ABE) fermentation. In serum-bottle fermentation with in situ adsorption, activated carbon showed the best performance with 21.9g/L of butanol production. When operated in a fermentor, free- and immobilized-cell fermentations with adsorption produced 31.6g/L and 54.6g/L butanol with productivities of 0.30g/L·h and 0.45g/L·h, respectively. Thermal desorption produced a condensate containing ∼167g/L butanol, which resulted in a highly concentrated butanol solution of ∼640g/L after spontaneous phase separation. This in situ product recovery process with activated carbon is energy efficient and can be easily integrated with ABE fermentation for n-butanol production.
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Affiliation(s)
- Chuang Xue
- Department of Life Science and Biotechnology, Dalian University of Technology, Dalian 116024, China; Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 West Woodruff Avenue, Columbus, OH 43210, USA
| | - Fangfang Liu
- Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 West Woodruff Avenue, Columbus, OH 43210, USA
| | - Mengmeng Xu
- Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 West Woodruff Avenue, Columbus, OH 43210, USA
| | - I-Ching Tang
- Bioprocessing Innovative Company, 4734 Bridle Path Court, Dublin, OH 43017, USA
| | - Jingbo Zhao
- Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 West Woodruff Avenue, Columbus, OH 43210, USA
| | - Fengwu Bai
- Department of Life Science and Biotechnology, Dalian University of Technology, Dalian 116024, China
| | - Shang-Tian Yang
- Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 West Woodruff Avenue, Columbus, OH 43210, USA.
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34
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Lee SH, Kim S, Kim JY, Cheong NY, Kim KH. Enhanced butanol fermentation using metabolically engineered Clostridium acetobutylicum with ex situ recovery of butanol. BIORESOURCE TECHNOLOGY 2016; 218:909-917. [PMID: 27441828 DOI: 10.1016/j.biortech.2016.07.060] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 07/12/2016] [Accepted: 07/13/2016] [Indexed: 06/06/2023]
Abstract
In this study, metabolic target reactions for strain engineering were searched via intracellular coenzyme A (CoA) metabolite analysis. The metabolic reactions catalyzed by thiolase (AtoB) and aldehyde-alcohol dehydrogenase (AdhE1) were considered potential rate-limiting steps. In addition, CoA transferase (CtfAB) was highlighted as being important for the assimilation of organic acids, in order to achieve high butanol production. Based on this quantitative analysis, the BEKW_E1AB-atoB strain was constructed by overexpressing the thl (atoB), adhE1, and ctfAB genes in Clostridium acetobutylicum strain BEKW, which has the phosphotransacetylase (pta) and butyrate kinase (buk) genes knocked out. After 100h of continuous fermentation coupled with adsorptive ex situ butanol recovery, the concentrations found after considering desorption, yield, and productivity for the BEKW_E1AB-atoB strain were 55.7g/L, 0.38g/g, and 2.64g/L/h, respectively. The level of butanol production achieved (2.64g/L/h) represents the highest reported value obtained after adsorptive, long-term fermentation.
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Affiliation(s)
- Sang-Hyun Lee
- Department of Biotechnology, Graduate School, Korea University, Seoul 02841, South Korea
| | - Sooah Kim
- Department of Biotechnology, Graduate School, Korea University, Seoul 02841, South Korea
| | - Jung Yeon Kim
- Department of Biotechnology, Graduate School, Korea University, Seoul 02841, South Korea
| | - Nam Yong Cheong
- Environmental Analysis Division, Korea Apparel Testing & Research Institute, Anyang 14088, South Korea
| | - Kyoung Heon Kim
- Department of Biotechnology, Graduate School, Korea University, Seoul 02841, South Korea.
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35
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Shen X, Liu D, Liu J, Wang Y, Xu J, Yang Z, Guo T, Niu H, Ying H. Enhanced production of butanol and acetoin by heterologous expression of an acetolactate decarboxylase in Clostridium acetobutylicum. BIORESOURCE TECHNOLOGY 2016; 216:601-606. [PMID: 27285575 DOI: 10.1016/j.biortech.2016.05.121] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/28/2016] [Accepted: 05/30/2016] [Indexed: 06/06/2023]
Abstract
Butanol is an important industrial chemical and an attractive transportation fuel. However, the deficiency of reducing equivalents NAD(P)H in butanol fermentation results in a large quantity of oxidation products, which is a major problem limiting the atom economy and economic viability of bio-butanol processes. Here, we integrated the butanol fermentation process with a NADH-generating, acetoin biosynthesis process to improve the butanol production. By overexpressing the α-acetolactate decarboxylase gene alsD from Bacillus subtilis in Clostridium acetobutylicum, acetoin yield was significantly increased at the cost of acetone. After optimization of fermentation conditions, butanol (12.9g/L), acetoin (6.5g/L), and ethanol (1.9g/L) were generated by the recombinant strain, with acetone no more than 1.8g/L. Thus, both mass yield and product value were greatly improved. This study demonstrates that reducing power compensation is effective to improve the atom economy of butanol fermentation, and provides a novel approach to improve the economic viability of bio-butanol production.
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Affiliation(s)
- Xiaoning Shen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Dong Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China.
| | - Jun Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Yanyan Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Jiahui Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Zhengjiao Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Ting Guo
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Huanqing Niu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Hanjie Ying
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China.
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Lee SH, Yun EJ, Kim J, Lee SJ, Um Y, Kim KH. Biomass, strain engineering, and fermentation processes for butanol production by solventogenic clostridia. Appl Microbiol Biotechnol 2016; 100:8255-71. [PMID: 27531513 DOI: 10.1007/s00253-016-7760-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Revised: 07/26/2016] [Accepted: 07/28/2016] [Indexed: 12/14/2022]
Abstract
Butanol is considered an attractive biofuel and a commercially important bulk chemical. However, economical production of butanol by solventogenic clostridia, e.g., via fermentative production of acetone-butanol-ethanol (ABE), is hampered by low fermentation performance, mainly as a result of toxicity of butanol to microorganisms and high substrate costs. Recently, sugars from marine macroalgae and syngas were recognized as potent carbon sources in biomass feedstocks that are abundant and do not compete for arable land with edible crops. With the aid of systems metabolic engineering, many researchers have developed clostridial strains with improved performance on fermentation of these substrates. Alternatively, fermentation strategies integrated with butanol recovery processes such as adsorption, gas stripping, liquid-liquid extraction, and pervaporation have been designed to increase the overall titer of butanol and volumetric productivity. Nevertheless, for economically feasible production of butanol, innovative strategies based on recent research should be implemented. This review describes and discusses recent advances in the development of biomass feedstocks, microbial strains, and fermentation processes for butanol production.
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Affiliation(s)
- Sang-Hyun Lee
- Department of Biotechnology, Graduate School, Korea University, Seoul, 02841, South Korea
| | - Eun Ju Yun
- Department of Biotechnology, Graduate School, Korea University, Seoul, 02841, South Korea
| | - Jungyeon Kim
- Department of Biotechnology, Graduate School, Korea University, Seoul, 02841, South Korea
| | - Sang Jun Lee
- Biosystems and Bioengineering Program, University of Science and Technology and Microbiomics and Immunity Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, South Korea
| | - Youngsoon Um
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - Kyoung Heon Kim
- Department of Biotechnology, Graduate School, Korea University, Seoul, 02841, South Korea.
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Combined Detoxification and In-situ Product Removal by a Single Resin During Lignocellulosic Butanol Production. Sci Rep 2016; 6:30533. [PMID: 27459906 PMCID: PMC4962308 DOI: 10.1038/srep30533] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 07/05/2016] [Indexed: 01/14/2023] Open
Abstract
Phragmites australis (an invasive plant in North America) was used as feedstock for ABE (acetone-butanol-ethanol) fermentation by Clostridium saccharobutylicum. Sulphuric acid pretreated phragmites hydrolysate (SAEH) without detoxification inhibited butanol production (0.73 g/L butanol from 30 g/L sugars). The treatment of SAEH with resin L-493 prior the fermentation resulted in no inhibitory effects and an ABE titer of 14.44 g/L, including 5.49 g/L butanol was obtained, corresponding to an ABE yield and productivity of 0.49 g/g and 0.60 g/L/h, respectively. Dual functionality of the resin was realized by also using it as an in-situ product removal agent. Integrating in-situ product removal allowed for the use of high substrate concentrations without the typical product inhibition. Resin-detoxified SAEH was supplemented with neat glucose and an effective ABE titer of 33 g/L (including 13.7 g/L acetone, 16.4 g/L butanol and 1.9 g/L ethanol) was achieved with resin-based in-situ product removal, corresponding to an ABE yield and productivity of 0.41 g/g and 0.69 g/L/h, respectively. Both detoxification of the substrate and the products was achieved by the same resin, which was added prior the fermentation. Integrating hydrolysate detoxification and in-situ butanol removal in a batch process through single resin can potentially simplify cellulosic butanol production.
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Lee SH, Eom MH, Choi JDR, Kim S, Kim J, Shin YA, Kim KH. Ex situ product recovery for enhanced butanol production by Clostridium beijerinckii. Bioprocess Biosyst Eng 2016; 39:695-702. [DOI: 10.1007/s00449-016-1550-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 01/15/2016] [Indexed: 12/12/2022]
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Anaerobes in Industrial- and Environmental Biotechnology. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2016; 156:1-33. [DOI: 10.1007/10_2016_10] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Liu D, Xu J, Wang Y, Chen Y, Shen X, Niu H, Guo T, Ying H. Comparative transcriptomic analysis of Clostridium acetobutylicum biofilm and planktonic cells. J Biotechnol 2016; 218:1-12. [DOI: 10.1016/j.jbiotec.2015.11.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 11/17/2015] [Accepted: 11/20/2015] [Indexed: 12/23/2022]
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Lee SH, Eom MH, Kim S, Kwon MA, Choi JDR, Kim J, Shin YA, Kim KH. Ex situ product recovery and strain engineering of Clostridium acetobutylicum for enhanced production of butanol. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.08.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Staggs KW, Nielsen DR. Improving n-butanol production in batch and semi-continuous processes through integrated product recovery. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.06.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Procentese A, Raganati F, Olivieri G, Russo ME, Salatino P, Marzocchella A. Continuous xylose fermentation by Clostridium acetobutylicum--Assessment of solventogenic kinetics. BIORESOURCE TECHNOLOGY 2015; 192:142-148. [PMID: 26025352 DOI: 10.1016/j.biortech.2015.05.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 05/12/2015] [Accepted: 05/13/2015] [Indexed: 06/04/2023]
Abstract
This work deals with the specific butanol production rate of Clostridium acetobutylicum using xylose--a relevant fraction of lignocellulosic feedstock for biofuel production--as carbon source. The tests were carried out in a CSTR equipped with a microfiltration unit. The dilution rate (D) ranged between 0.02 and 0.22 h(-1) and the ratio R between the permeate stream rate and the stream fed to the reactor ranged between 14% and 88%. The biomass present in the broth was identified as a heterogeneous cell population consisting of: acidogenic cells, solventogenic cells and spores. The results were processed to assess the concentration of acidogenic cells, solventogenic cells and spores. The specific butanol production rate was also assessed. The max butanol productivity was 1.3 g L(-1) h(-1) at D = 0.17 h(-1) and R = 30%. A comparison between the results reported in a previous work carried out with lactose was made.
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Affiliation(s)
- Alessandra Procentese
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, P.le V. Tecchio 80, 80125 Napoli, Italy
| | - Francesca Raganati
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, P.le V. Tecchio 80, 80125 Napoli, Italy
| | - Giuseppe Olivieri
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, P.le V. Tecchio 80, 80125 Napoli, Italy; Bioprocess Engineering - AlgaePARC, Wageningen University, PO Box 16, 6700AA Wageningen, The Netherlands.
| | - Maria Elena Russo
- Istituto di Ricerche sulla Combustione, Consiglio Nazionale delle Ricerche, P.le V. Tecchio 80, 80125 Napoli, Italy
| | - Piero Salatino
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, P.le V. Tecchio 80, 80125 Napoli, Italy
| | - Antonio Marzocchella
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, P.le V. Tecchio 80, 80125 Napoli, Italy
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Cray JA, Stevenson A, Ball P, Bankar SB, Eleutherio ECA, Ezeji TC, Singhal RS, Thevelein JM, Timson DJ, Hallsworth JE. Chaotropicity: a key factor in product tolerance of biofuel-producing microorganisms. Curr Opin Biotechnol 2015; 33:228-59. [PMID: 25841213 DOI: 10.1016/j.copbio.2015.02.010] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 02/13/2015] [Accepted: 02/18/2015] [Indexed: 10/23/2022]
Abstract
Fermentation products can chaotropically disorder macromolecular systems and induce oxidative stress, thus inhibiting biofuel production. Recently, the chaotropic activities of ethanol, butanol and vanillin have been quantified (5.93, 37.4, 174kJ kg(-1)m(-1) respectively). Use of low temperatures and/or stabilizing (kosmotropic) substances, and other approaches, can reduce, neutralize or circumvent product-chaotropicity. However, there may be limits to the alcohol concentrations that cells can tolerate; e.g. for ethanol tolerance in the most robust Saccharomyces cerevisiae strains, these are close to both the solubility limit (<25%, w/v ethanol) and the water-activity limit of the most xerotolerant strains (0.880). Nevertheless, knowledge-based strategies to mitigate or neutralize chaotropicity could lead to major improvements in rates of product formation and yields, and also therefore in the economics of biofuel production.
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Affiliation(s)
- Jonathan A Cray
- Institute for Global Food Security, School of Biological Sciences, MBC, Queen's University Belfast, Belfast BT9 7BL, Northern Ireland, UK
| | - Andrew Stevenson
- Institute for Global Food Security, School of Biological Sciences, MBC, Queen's University Belfast, Belfast BT9 7BL, Northern Ireland, UK
| | - Philip Ball
- 18 Hillcourt Road, East Dulwich, London SE22 0PE, UK
| | - Sandip B Bankar
- Department of Chemical Engineering, College of Engineering, Bharati Vidyapeeth University, Pune-Satara Road, Pune 411043, India
| | - Elis C A Eleutherio
- Universidade Federal do Rio de Janeiro, Instituto de Quimica, Programa de Pós-graduação Bioquimica, Rio de Janeiro, RJ, Brazil
| | - Thaddeus C Ezeji
- Department of Animal Sciences and Ohio Agricultural Research and Development Center (OARDC), The Ohio State University, 305 Gerlaugh Hall, 1680 Madison Avenue, Wooster, OH 44691, USA
| | - Rekha S Singhal
- Department of Food Engineering and Technology, Institute of Chemical Technology, N.P. Marg, Matunga, Mumbai, Maharashtra 400019, India
| | - Johan M Thevelein
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven and Department of Molecular Microbiology, VIB, Kasteelpark Arenberg 31, Flanders, Leuven-Heverlee B-3001, Belgium
| | - David J Timson
- Institute for Global Food Security, School of Biological Sciences, MBC, Queen's University Belfast, Belfast BT9 7BL, Northern Ireland, UK
| | - John E Hallsworth
- Institute for Global Food Security, School of Biological Sciences, MBC, Queen's University Belfast, Belfast BT9 7BL, Northern Ireland, UK.
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Wu H, He AY, Kong XP, Jiang M, Chen XP, Zhu DW, Liu GP, Jin WQ. Acetone–butanol–ethanol production using pH control strategy and immobilized cells in an integrated fermentation–pervaporation process. Process Biochem 2015. [DOI: 10.1016/j.procbio.2014.12.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Li Z, Chen Y, Liu D, Zhao N, Cheng H, Ren H, Guo T, Niu H, Zhuang W, Wu J, Ying H. Involvement of glycolysis/gluconeogenesis and signaling regulatory pathways in Saccharomyces cerevisiae biofilms during fermentation. Front Microbiol 2015; 6:139. [PMID: 25755652 PMCID: PMC4337339 DOI: 10.3389/fmicb.2015.00139] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 02/05/2015] [Indexed: 11/16/2022] Open
Abstract
Compared to free (free-living) cells, biofilm cells show increased resistance and stability to high-pressure fermentation conditions, although the reasons underlying these phenomena remain unclear. Here, we investigated biofilm formation with immobilized Saccharomyces cerevisiae cells grown on fiber surfaces during the process of ethanol fermentation. The development of biofilm colonies was visualized by fluorescent labeling and confocal microscopy. RNA from yeast cells at three different biofilm development periods was extracted and sequenced by high-throughput sequencing. We quantitated gene expression differences between biofilm cells and free cells and found that 2098, 1556, and 927 genes were significantly differentially expressed, respectively. We also validated the expression of previously reported genes and identified novel genes and pathways under the control of this system. Statistical analysis revealed that biofilm genes show significant gene expression changes principally in the initial period of biofilm formation compared to later periods. Carbohydrate metabolism, amino acid metabolism, signal transduction, and oxidoreductase activity were needed for biofilm formation. In contrast to previous findings, we observed some differential expression performances of FLO family genes, indicating that cell aggregation in our immobilized fermentation system was possibly independent of flocculation. Cyclic AMP-protein kinase A and mitogen-activated protein kinase pathways regulated signal transduction pathways during yeast biofilm formation. We found that carbohydrate metabolism, especially glycolysis/gluconeogenesis, played a key role in the development of S. cerevisiae biofilms. This work provides an important dataset for future studies aimed at gaining insight into the regulatory mechanisms of immobilized cells in biofilms, as well as for optimizing bioprocessing applications with S. cerevisiae.
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Affiliation(s)
- Zhenjian Li
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing, China ; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing, China
| | - Yong Chen
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing, China
| | - Dong Liu
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing, China
| | - Nan Zhao
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing, China
| | - Hao Cheng
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing, China
| | - Hengfei Ren
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing, China
| | - Ting Guo
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing, China
| | - Huanqing Niu
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing, China
| | - Wei Zhuang
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing, China
| | - Jinglan Wu
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing, China
| | - Hanjie Ying
- National Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing, China ; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing, China
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Elucidating butanol tolerance mediated by a response regulator Sll0039 in Synechocystis sp. PCC 6803 using a metabolomic approach. Appl Microbiol Biotechnol 2015; 99:1845-57. [DOI: 10.1007/s00253-015-6374-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 12/27/2014] [Accepted: 12/30/2014] [Indexed: 10/24/2022]
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49
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Su H, Zhao Y, Wang M, Xu Y. Development and application of a novel screening method and experimental use of the mutant bacterial strain Clostridium beijerinckii NCIMB 8052 for production of butanol via fermentation of fresh cassava. RSC Adv 2015. [DOI: 10.1039/c4ra16576d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Classic chemical mutagenesis has a demonstrated potential to create a strain ofClostridiumwith improved fermentation performance for obtaining high butanol yield.
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Affiliation(s)
- Haifeng Su
- Enviromentally-Begnin Chemical Process Research Center
- Division of Ecological & Enviromental Research on the Three Gorges
- Chongqing Institute of Green and Interligent Technology
- Chinese Academy of Science
- P. R. China
| | - Yun Zhao
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education
- College of Life Sciences
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Maolin Wang
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education
- College of Life Sciences
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Yuanjian Xu
- Enviromentally-Begnin Chemical Process Research Center
- Division of Ecological & Enviromental Research on the Three Gorges
- Chongqing Institute of Green and Interligent Technology
- Chinese Academy of Science
- P. R. China
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Li T, Yan Y, He J. Enhanced direct fermentation of cassava to butanol by Clostridium species strain BOH3 in cofactor-mediated medium. BIOTECHNOLOGY FOR BIOFUELS 2015; 8:166. [PMID: 26464582 PMCID: PMC4603972 DOI: 10.1186/s13068-015-0351-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 09/30/2015] [Indexed: 05/07/2023]
Abstract
BACKGROUND The main challenge of cassava-based biobutanol production is to enhance the simultaneous saccharification and fermentation with high hyperamylolytic activity and butanol yield. Manipulation of cofactor [e.g., Ca(2+) and NAD/(P)H] levels as a potential tool to modulate carbon flux plays a key role in the cassava hydrolysis capacity and butanol productivity. Here, we aimed to develop a technology for enhancing butanol production with simultaneous hydrolysis of cassava (a typical model as a non-cereal starchy material) using a cofactor-dependent modulation method to maximize the production efficacy of biobutanol by Clostridium sp. stain BOH3. RESULTS Supplementing CaCO3 to the medium containing cassava significantly promotes activities of α-amylase responsible for cassava hydrolysis and butanol production due to the role of Ca(2+) cofactor-dependent pathway in conversion of cassava starch to reducing sugar and its buffering capacity. Also, after applying redox modulation with l-tryptophan (a precursor as de novo synthesis of NADH and NADPH), the levels of cofactor NADH and NADPH increased significantly by 67 % in the native cofactor-dependent system of the wild-type Clostridium sp. stain BOH3. Increasing availability of NADH and NADPH improved activities of NADH- and NADPH-dependent butanol dehydrogenases, and thus could selectively open the valve of carbon flux toward the more reduced product, butanol, against the more oxidized acid or acetone products. By combining CaCO3 and l-tryptophan, 17.8 g/L butanol with a yield of 30 % and a productivity of 0.25 g/L h was obtained with a hydrolytic capacity of 88 % towards cassava in a defined medium. The metabolic patterns were shifted towards more reduced metabolites as reflected by higher butanol-acetone ratio (76 %) and butanol-bioacid ratio (500 %). CONCLUSIONS The strategy of altering enzyme cofactor supply may provide an alternative tool to enhance the stimulation of saccharification and fermentation in a cofactor-dependent production system. While genetic engineering focuses on strain improvement to enhance butanol production, cofactor technology can fully exploit the productivity of a strain and maximize the production efficiency.
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Affiliation(s)
- Tinggang Li
- Department of Civil and Environmental Engineering, National University of Singapore, Block E2-02-13, 1 Engineering Drive 3, Singapore, 117576 Singapore
| | - Yu Yan
- Department of Civil and Environmental Engineering, National University of Singapore, Block E2-02-13, 1 Engineering Drive 3, Singapore, 117576 Singapore
| | - Jianzhong He
- Department of Civil and Environmental Engineering, National University of Singapore, Block E2-02-13, 1 Engineering Drive 3, Singapore, 117576 Singapore
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