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Virklund A, Nielsen AT, Woodley JM. Biocatalysis with In-Situ Product Removal Improves p-Coumaric Acid Production. Chembiochem 2024:e202400178. [PMID: 38742869 DOI: 10.1002/cbic.202400178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/10/2024] [Accepted: 05/10/2024] [Indexed: 05/16/2024]
Abstract
Natural and pure p-coumaric acid has valuable applications, and it can be produced via bioprocessing. However, fermentation processes have so far been unable to provide sufficient production metrics, while a biocatalytic process decoupling growth and production historically showed much promise. This biocatalytic process is revisited in order to tackle product inhibition of the key enzyme tyrosine ammonia lyase. In situ product removal is proposed as a possible solution, and a polymer/salt aqueous two-phase system is identified as a suitable system for extraction of p-coumaric acid from an alkaline solution, with a partition coefficient of up to 13. However, a 10 % salt solution was found to reduce tyrosine ammonia lyase activity by 19 %, leading to the need for a more dilute system. The cloud points of two aqueous two-phase systems at 40 °C and pH 10 were found to be 3.8 % salt and 9.5 % polymer, and a 5 % potassium phosphate and 12.5 % poly(ethylene glycol-ran-propylene glycol) mW~2500 system was selected for in situ product removal. An immobilized tyrosine ammonia lyase biocatalyst in this aqueous two-phase system produced up to 33 g/L p-coumaric acid within 24 hours, a 1.9-fold improvement compared to biocatalysis without in situ product removal.
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Affiliation(s)
- Alexander Virklund
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs., Lyngby, Denmark
| | - Alex Toftgaard Nielsen
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Kgs., Lyngby, Denmark
| | - John M Woodley
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs., Lyngby, Denmark
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2
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Singh S, Kumar Sharma P, Chaturvedi S, Kumar P, Deepak Nannaware A, Kalra A, Kumar Rout P. Biocatalyst for the synthesis of natural flavouring compounds as food additives: Bridging the gap for a more sustainable industrial future. Food Chem 2024; 435:137217. [PMID: 37832337 DOI: 10.1016/j.foodchem.2023.137217] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 08/17/2023] [Accepted: 08/17/2023] [Indexed: 10/15/2023]
Abstract
Biocatalysis entails the use of purified enzymes in the manufacturing of flavouring chemicals food industry as well as at the laboratory level. These biocatalysts can significantly accelerate organic chemical processes and improve product stereospecificity. The unique characteristics of biocatalyst helpful in synthesizing the environmentally friendly flavour and aroma compounds used as a food additive in foodstuffs. With methods like enzyme engineering on biotechnological interventions the efficient tuning of produce will fulfil the needs of food industry. This review summarizes the biosynthesis of different flavour and aroma component through microbial catalysts and using advanced techniques which are available for enzyme improvement. Also pointing out their benefits and drawbacks for specific technological processes necessary for successful industrial application of biocatalysts. The article covers the market scenario, cost economics, environmental safety and regulatory framework for the production of food flavoured chemicals by the bioprocess engineering.
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Affiliation(s)
- Suman Singh
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh 226015, India
| | - Praveen Kumar Sharma
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh 226015, India
| | - Shivani Chaturvedi
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh 226015, India
| | - Prashant Kumar
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh 226015, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ashween Deepak Nannaware
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh 226015, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Alok Kalra
- Crop Production and Protection Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh 226015, India
| | - Prasant Kumar Rout
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh 226015, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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3
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Galindo-Rodriguez GR, Santoyo-Garcia JH, Rios-Solis L, Dimartino S. In situ recovery of taxadiene using solid adsorption in cultivations with Saccharomyces cerevisiae. Prep Biochem Biotechnol 2024; 54:86-94. [PMID: 37162336 DOI: 10.1080/10826068.2023.2207204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
In this study, an engineered strain of Saccharomyces cerevisiae was used to produce taxadiene, a precursor in the biosynthetic pathway of the anticancer drug paclitaxel. Taxadiene was recovered in situ with the polymeric adsorbent Diaion © HP-20. Here we tested two bioreactor configurations and adsorbent concentrations to maximize the production and recovery of taxadiene. An external recovery configuration (ERC) was performed with the integration of an expanded bed adsorption column, whereas the internal recovery configuration (IRC) consisted in dispersed beads inside the bioreactor vessel. Taxadiene titers recovered in IRC were higher to ERC by 3.4 and 3.5 fold by using 3% and 12% (w/v) adsorbent concentration respectively. On the other hand, cell growth kinetics were faster in ERC which represents an advantage in productivity (mg of taxadiene/L*h). High resin bead concentration (12% w/v) improved the partition of taxadiene onto the beads up to 98%. This result represents an advantage over previous studies using a 3% resin concentration where the partition of taxadiene on the beads was around 50%. This work highlights the potential of in situ product recovery to improve product partition, reduce processing steps and promote cell growth. Nevertheless, a careful design of bioreactor configuration and process conditions is critical.
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Affiliation(s)
| | - Jorge H Santoyo-Garcia
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, Edinburgh, UK
- Centre for Synthetic and Systems Biology (SynthSys), The University of Edinburgh, Edinburgh, UK
| | - Leonardo Rios-Solis
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, Edinburgh, UK
- Centre for Synthetic and Systems Biology (SynthSys), The University of Edinburgh, Edinburgh, UK
| | - Simone Dimartino
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, Edinburgh, UK
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Qi Z, Tong X, Zhang Y, Jia S, Fang X, Zhao L. Carotenoid Cleavage Dioxygenase 1 and Its Application for the Production of C13-Apocarotenoids in Microbial Cell Factories: A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:19240-19254. [PMID: 38047615 DOI: 10.1021/acs.jafc.3c06459] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
C13-apocarotenoids are naturally derived from the C9-C10 (C9'-C10') double-bond cleavage of carotenoids by carotenoid cleavage dioxygenases (CCDs). As high-value flavors and fragrances in the food and cosmetic industries, the sustainable production of C13-apocarotenoids is emerging in microbial cell factories by the carotenoid cleavage dioxygenase 1 (CCD1) subfamily. However, the commercialization of microbial-based C13-apocarotenoids is still limited by the poor performance of CCD1, which severely constrains its conversion efficiency from precursor carotenoids. This review focuses on the classification of CCDs and their cleavage modes for carotenoids to generate corresponding apocarotenoids. We then emphatically discuss the advances for C13-apocarotenoid biosynthesis in microbial cell factories with various strategies, including optimization of CCD1 expression, improvement of CCD1's catalytic activity and substrate specificity, strengthening of substrate channeling, and development of oleaginous microbial hosts, which have been verified to increase the conversion rate from carotenoids. Lastly, the current challenges and future directions will be discussed to enhance CCDs' application for C13-apocarotenoids biomanufacturing.
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Affiliation(s)
- Zhipeng Qi
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, 159 Long Pan Road, Nanjing 210037, China
- College of Chemical Engineering, Nanjing Forestry University, 159 Long Pan Road, Nanjing 210037, China
| | - Xinyi Tong
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, 159 Long Pan Road, Nanjing 210037, China
- College of Chemical Engineering, Nanjing Forestry University, 159 Long Pan Road, Nanjing 210037, China
| | - Yangyang Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, 159 Long Pan Road, Nanjing 210037, China
- College of Chemical Engineering, Nanjing Forestry University, 159 Long Pan Road, Nanjing 210037, China
| | - Shutong Jia
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, 159 Long Pan Road, Nanjing 210037, China
- College of Chemical Engineering, Nanjing Forestry University, 159 Long Pan Road, Nanjing 210037, China
| | - Xianying Fang
- College of Chemical Engineering, Nanjing Forestry University, 159 Long Pan Road, Nanjing 210037, China
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
| | - Linguo Zhao
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, 159 Long Pan Road, Nanjing 210037, China
- College of Chemical Engineering, Nanjing Forestry University, 159 Long Pan Road, Nanjing 210037, China
- Jiangsu Province Key Lab for the Chemistry & Utilization of Agricultural and Forest, Nanjing 210037, China
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Pastoors J, Deitert A, Michel C, Günster K, Finger M, Hofstede J, Deischter J, Biselli A, Viell J, Palkovits R, Jupke A, Büchs J. In situ adsorption of itaconic acid from fermentations of Ustilago cynodontis improves bioprocess efficiency. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:181. [PMID: 38008736 PMCID: PMC10676596 DOI: 10.1186/s13068-023-02433-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 11/14/2023] [Indexed: 11/28/2023]
Abstract
BACKGROUND Reducing the costs of biorefinery processes is a crucial step in replacing petrochemical products by sustainable, biotechnological alternatives. Substrate costs and downstream processing present large potential for improvement of cost efficiency. The implementation of in situ adsorption as an energy-efficient product recovery method can reduce costs in both areas. While selective product separation is possible at ambient conditions, yield-limiting effects, as for example product inhibition, can be reduced in an integrated process. RESULTS An in situ adsorption process was integrated into the production of itaconic acid with Ustilago cynodontis IAmax, as an example of a promising biorefinery process. A suitable feed strategy was developed to enable efficient production and selective recovery of itaconic acid by maintaining optimal glucose concentrations. Online monitoring via Raman spectroscopy was implemented to enable a first process control and understand the interactions of metabolites with the adsorbent. In the final, integrated bioprocess, yield, titre, and space-time yield of the fermentation process were increased to values of 0.41 gIA/gGlucose, 126.5 gIA/L and 0.52 gIA/L/h. This corresponds to an increase of up to 30% in comparison to the first extended batch experiment without in situ product removal. Itaconic acid was recovered with a purity of at least 95% and high concentrations above 300 g/L in the eluate. CONCLUSION Integration of product separation via adsorption into the bioprocess was successfully conducted and improved the efficiency of itaconic acid production. Raman spectroscopy was proven to be a reliable tool for online monitoring of various metabolites and facilitated design and validation of the complex separation and feed process. The general process concept can be transferred to the production of various similar bioproducts, expanding the tool kit for design of innovative biorefinery processes.
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Affiliation(s)
- Johannes Pastoors
- AVT-Biochemical Engineering, RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Alexander Deitert
- AVT-Biochemical Engineering, RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Carina Michel
- AVT-Biochemical Engineering, RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Karsten Günster
- AVT-Biochemical Engineering, RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Maurice Finger
- AVT-Biochemical Engineering, RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Jordy Hofstede
- AVT-Process Systems Engineering, RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Jeff Deischter
- ITMC-Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany
| | - Andreas Biselli
- AVT-Fluid Process Engineering, RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Jörn Viell
- AVT-Process Systems Engineering, RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Regina Palkovits
- ITMC-Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany
| | - Andreas Jupke
- AVT-Fluid Process Engineering, RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Jochen Büchs
- AVT-Biochemical Engineering, RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany.
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Monascus Yellow Pigment Production by Coupled Immobilized-Cell Fermentation and Extractive Fermentation in Nonionic Surfactant Micelle Aqueous Solution. FERMENTATION-BASEL 2023. [DOI: 10.3390/fermentation9020168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Microbial fermentation with immobilized cells possesses many advantages. However, this fermentation mode is restricted to the production of extracellular products. Our previous study demonstrated that the extractive fermentation of Monascus spp. in nonionic surfactant micelle aqueous solution can export Monascus pigments that are supposed to be mainly intracellular products to extracellular culture broth and, in the meantime, extracellularly enhance the production of yellow pigments at a low pH condition; consequently, this makes the continuous production of yellow pigments with immobilized Monascus cells feasible. In this study, immobilized-cell fermentation and extractive fermentation in Triton X-100 micelle aqueous solution were successfully combined to continuously produce Monascus yellow pigments extracellularly. We examined the effects of cell immobilization and Triton X-100 on cell growth, pigment production, and pigment composition. In the repeated-batch extractive fermentation with immobilized cells, the biomass in Ca-alginate gel beads continued to grow and reached 21.2 g/L after seven batches, and dominant yellow pigments were produced extracellularly and stable for each batch. The mean productivity of the extracellular yellow pigments reached up to 22.31 AU410 nm/day within the first four batches (13 days) and 19.7 AU410 nm/day within the first seven batches (25 days). The results also provide a new strategy for producing such intracellular products continuously and extracellularly.
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7
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Bora PK, Borah G, Kalita D, Saikia SP, Haldar S. Mushroom-Mediated Reductive Bioconversion of Aldehyde-Rich Essential Oils for Aroma Alteration: A Rose-like Floral Bioflavor from Citronella Oil. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:1690-1700. [PMID: 36637129 DOI: 10.1021/acs.jafc.2c08059] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The bioflavors are of high demand in food and beverage industries. The current study identified reductive processes mediated by mushroom species to alter the aroma of aldehyde-rich essential oils in the submerged culture. Neofomitella polyzonata, a polypore mushroom, reduced citronellal and citral in the citronella oil into corresponding alcohols that altered the oil aroma, creating a new bioflavor. The screening with 43 aldehydes showed its broad substrate scope within aromatic and linear aldehydes, yet influenced by the electronic and steric factors. Under an optimized condition, it efficiently converted up to 1.5 g/L citrusy and sharp citronella oil into a terpene alcohol-rich (citronellol and geraniol) floral, sweet, fresh, and rosy oily product within 12 h. The preparative-scale fermentation in the shake flask followed by distillation, an organic solvent-free downstream process, furnished the product in 87.2% w/w yield. Detailed sensory analyses and volatile chemo-profiling established the uniqueness in the product aroma and identified citronellol and geraniol as the key odorants. The chemometric analysis found best compositional similarity of this product with Damask or Turkish rose oils. The preference test for the water flavored with the fermented product (0.001-0.005% v/v) indicated its potential as a rosy bioflavor for the beverages.
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Affiliation(s)
- Pranjit Kumar Bora
- Agrotechnology and Rural Development Division, CSIR-North East Institute of Science and Technology (NEIST), Jorhat, Assam 785006, India
- AcSIR-Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201002, India
| | - Gitasree Borah
- Agrotechnology and Rural Development Division, CSIR-North East Institute of Science and Technology (NEIST), Jorhat, Assam 785006, India
- AcSIR-Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201002, India
| | - Dhanmoni Kalita
- Engineering Sciences and Technology Division, CSIR-North East Institute of Science and Technology (NEIST), Jorhat, Assam 785006, India
| | - Siddhartha Proteem Saikia
- Agrotechnology and Rural Development Division, CSIR-North East Institute of Science and Technology (NEIST), Jorhat, Assam 785006, India
- AcSIR-Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201002, India
| | - Saikat Haldar
- Agrotechnology and Rural Development Division, CSIR-North East Institute of Science and Technology (NEIST), Jorhat, Assam 785006, India
- AcSIR-Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201002, India
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8
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Teke GM, Gakingo GK, Pott RW. A numerical investigation of the hydrodynamic and mass transfer behavior of a liquid-liquid semi-partition bioreactor (SPB) designed for in-situ extractive fermentation. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2022.118226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Teke GM, Gakingo GK, Pott RWM. The liquid-liquid extractive fermentation of L-lactic acid in a novel semi-partition bioreactor (SPB). J Biotechnol 2022; 360:55-61. [PMID: 36330925 DOI: 10.1016/j.jbiotec.2022.10.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/21/2022] [Accepted: 10/26/2022] [Indexed: 11/06/2022]
Abstract
Fermentation technology is commonly used as a mature process to produce numerous products with the help of micro-organisms. However, these organisms are sometimes inhibited by the accumulation of these products or their by-products. One route to circumvent this is via extractive fermentation, which combines the fermentation process with extraction. To facilitate this, novel bioreactor designs are required, such as the semi-partition bioreactor (SPB) which has been recently proposed for in-situ extractive fermentation. The latter combines a fermentation and an extraction unit into a single vessel using a mixer-settler principle. Where the bioproduct is produced in the mixer and removed continuous in the settler. As the SPB functionality is a subject of interest, this study builds on demonstrating different process conditions in the production of a sample bioprocess (lactic acid (LA)) which is susceptible to product inhibition. The results showed a 34.5 g/L LA concentration was obtained in the pH-controlled condition. While LA production can suffer from product inhibition, neutralizing agents can be easily used to curb inhibitory problems, however, the LA fermentation is a simple (and well-studied) example, which can demonstrate an alternative route to avoiding product inhibition (for systems which cannot be rescued using pH control). Hence, to replicate a scenario of product inhibition, two different process conditions were investigated, no pH control with no extraction (non-integrated), and no pH control with integrated extractive fermentation. Key findings showed higher LA concentration in integrated (25.10 g/L) as compared to the non-integrated (14.94 g/L) case with improved yield (0.75 gg-1 (integrated) versus 0.60 gg-1 (non-integrated)) and overall productivity (0.35 gL-1h-1(integrated) versus 0.20 gL-1h-1(non-integrated)) likewise. This is the first demonstration of an SP bioreactor, and shows how the reactor can be applied to improve productivity. Based on these results, the SPB design can be applied to produce any product liable to product inhibition.
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Affiliation(s)
- George M Teke
- Department of Process Engineering, Stellenbosch University, South Africa
| | - Godfrey K Gakingo
- Department of Process Engineering, Stellenbosch University, South Africa; Department of Chemical Engineering, Dedan Kimathi University of Technology, Kenya
| | - Robert W M Pott
- Department of Process Engineering, Stellenbosch University, South Africa.
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Xia Y, Yang C, Liu X, Wang G, Xiong Z, Song X, Yang Y, Zhang H, Ai L. Enhancement of triterpene production via in situ extractive fermentation of Sanghuangporus vaninii YC-1. Biotechnol Appl Biochem 2022; 69:2561-2572. [PMID: 34967056 DOI: 10.1002/bab.2305] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 12/27/2021] [Indexed: 12/27/2022]
Abstract
There have been many studies on the activities and polysaccharide production of Sanghuangporus vaninii. However, few studies have looked at triterpene production from S. vaninii using liquid-state fermentation. A method for enhancing the production of triterpenes by in situ extractive fermentation (ISEF) was studied. Eight solvents were investigated as extractants for triterpene production in the ISEF system. The results showed that using vegetable oil as an extractant significantly increased the yield of total triterpenes and biomass of S. vaninii YC-1, reaching 18.98 ± 0.71 and 44.67 ± 2.21 g/L, respectively. In 5 L fermenter experiments, the added vegetable oil improved the dissolved oxygen condition of the fermentation broth and promoted the growth of S. vaninii YC-1. Furthermore, adding vegetable oil increased the expression of fatty acid synthesis-related genes such as FAD2 and SCD, thereby increasing the synthesis of unsaturated fatty acids in the cell membrane of S. vaninii YC-1. Therefore, the cell membrane permeability of S. vaninii YC-1 increased by 19%. Our results indicated that vegetable oil increased the permeability of S. vaninii YC-1 cell membranes to promote the production of total triterpenes. The use of vegetable oil as an extractant was thus effective in increasing the yield of triterpenes in the ISEF system.
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Affiliation(s)
- Yongjun Xia
- School of Medical Instrument and Food Engineering, Shanghai Engineering Research Center of Food Microbiology, University of Shanghai for Science and Technology, Shanghai, China
| | - Caiyun Yang
- School of Medical Instrument and Food Engineering, Shanghai Engineering Research Center of Food Microbiology, University of Shanghai for Science and Technology, Shanghai, China
| | - Xiaofeng Liu
- School of Medical Instrument and Food Engineering, Shanghai Engineering Research Center of Food Microbiology, University of Shanghai for Science and Technology, Shanghai, China
| | - Guangqiang Wang
- School of Medical Instrument and Food Engineering, Shanghai Engineering Research Center of Food Microbiology, University of Shanghai for Science and Technology, Shanghai, China
| | - Zhiqiang Xiong
- School of Medical Instrument and Food Engineering, Shanghai Engineering Research Center of Food Microbiology, University of Shanghai for Science and Technology, Shanghai, China
| | - Xin Song
- School of Medical Instrument and Food Engineering, Shanghai Engineering Research Center of Food Microbiology, University of Shanghai for Science and Technology, Shanghai, China
| | - Yijin Yang
- School of Medical Instrument and Food Engineering, Shanghai Engineering Research Center of Food Microbiology, University of Shanghai for Science and Technology, Shanghai, China
| | - Hui Zhang
- School of Medical Instrument and Food Engineering, Shanghai Engineering Research Center of Food Microbiology, University of Shanghai for Science and Technology, Shanghai, China
| | - Lianzhong Ai
- School of Medical Instrument and Food Engineering, Shanghai Engineering Research Center of Food Microbiology, University of Shanghai for Science and Technology, Shanghai, China
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11
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van der Hauwaert L, Regueira A, Selder L, Zeng AP, Mauricio-Iglesias M. Optimising bioreactor processes with in-situ product removal using mathematical programming: a case study for propionate production. Comput Chem Eng 2022. [DOI: 10.1016/j.compchemeng.2022.108059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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Whole-cell biocatalyzed organic solvent-free conversion of dill oil to cis-(-)-dihydrocarvone rich aromatic hydrosol: Chemical and aroma profiling. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.08.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Santos AG, Buarque FS, Ribeiro BD, Coelho MAZ. Extractive fermentation for the production and partitioning of lipase and citric acid by Yarrowia lipolytica. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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In-stream product recovery of p-coumaric acid heterologously produced: Implementation of a continuous liquid-liquid extraction assisted by hollow fiber membrane contactor. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Electrochemical membrane-assisted pH-swing extraction and back-extraction of lactic acid. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Oraby أميرة عرابي A, Weickardt I, Zibek S. Foam Fractionation Methods in Aerobic Fermentation Processes. Biotechnol Bioeng 2022; 119:1697-1711. [PMID: 35394649 DOI: 10.1002/bit.28102] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 03/01/2022] [Accepted: 03/27/2022] [Indexed: 11/07/2022]
Abstract
Inherently occurring foam formation during aerobic fermentations of surface-active compounds can be exploited by fractionating the foam. This also serves as the first downstream processing step for product concentration and is used for in situ product recovery. Compared to other foam prevention methods, it does not interfere with fermentation parameters or alter broth composition. Nevertheless, parameters affecting the foaming behaviour are complex. Therefore, the specific foam fractionation designs need to be engineered for each fermentation individually. This still hinders a widespread industrial application. However, few available commercial approaches demonstrate the applicability of foam columns on an industrial scale. This systematic literature review highlights relevant design aspects and process demands that need to be considered for an application to fermentations and proposes a classification of foam fractionation designs and methods. It further analyses substance-specific characteristics associated with foam fractionation. Finally, solutions for current challenges are presented, and future perspectives are discussed. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Amira Oraby أميرة عرابي
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Nobelstr. 12, 70569, Stuttgart, Germany.,Institute of Interfacial Process Engineering and Plasma Technology IGVP, University of Stuttgart, Nobelstr. 12, 70569, Stuttgart, Germany
| | - Isabell Weickardt
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Nobelstr. 12, 70569, Stuttgart, Germany
| | - Susanne Zibek
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Nobelstr. 12, 70569, Stuttgart, Germany.,Institute of Interfacial Process Engineering and Plasma Technology IGVP, University of Stuttgart, Nobelstr. 12, 70569, Stuttgart, Germany
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17
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Biro R, Daugulis AJ, Parent JS. Polymeric Ionic Liquid Absorbents for
n
‐Butanol
Recovery from Aqueous Solution. AIChE J 2022. [DOI: 10.1002/aic.17676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Robert Biro
- Department of Chemical Engineering Queen's University Kingston Ontario Canada
| | - Andrew J. Daugulis
- Department of Chemical Engineering Queen's University Kingston Ontario Canada
| | - J. Scott Parent
- Department of Chemical Engineering Queen's University Kingston Ontario Canada
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18
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Towards improved understanding of the hydrodynamics of a semi-partition bioreactor (SPB): A numerical investigation. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2021.10.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Teke GM, Tai SL, Pott RWM. Extractive Fermentation Processes: Modes of Operation and Application. CHEMBIOENG REVIEWS 2021. [DOI: 10.1002/cben.202100028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- George M. Teke
- University of Stellenbosch Department of Process Engineering Stellenbosch South Africa
| | - Siew L. Tai
- University of Cape Town Department of Chemical Engineering Cape Town South Africa
| | - Robert W. M. Pott
- University of Stellenbosch Department of Process Engineering Stellenbosch South Africa
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20
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Combes J, Imatoukene N, Couvreur J, Godon B, Brunissen F, Fojcik C, Allais F, Lopez M. Intensification of p-coumaric acid heterologous production using extractive biphasic fermentation. BIORESOURCE TECHNOLOGY 2021; 337:125436. [PMID: 34182346 DOI: 10.1016/j.biortech.2021.125436] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/14/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
p-coumaric acid (p-CA) can be produced from D-glucose by an engineered S. cerevisiae strain. p-CA has antimicrobial properties and retro-inhibition activity. Moreover, p-CA is a hydrophobic compound, limiting its accumulation in fermentation broth. To overcome these issues all at once, a liquid-liquid extraction in-situ product recovery process using oleyl alcohol as extractant has been implemented in order to continuously extract p-CA from the broth. Media and pH impacts on strain metabolism were assessed, highlighting p-CA decarboxylase endogenous activity. Biphasic fermentations allowed an increase in p-CA respiratory production rates at both pH assessed (13.65 and 9.45 mg L-1.h-1 at pH 6 and 4.5, respectively) compared to control ones (10.5 and 7.5 mg L-1.h-1 at pH 6 and 4.5, respectively). Biphasic fermentation effects on p-CA decarboxylation were studied showing that continuous removal of p-CA decreased its decarboxylation into 4-vinylphenol at pH 4.5 (57 mg L-1 in biphasic fermentation vs 173 mg L-1 in control one).
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Affiliation(s)
- Jeanne Combes
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, Pomacle 51110, France
| | - Nabila Imatoukene
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, Pomacle 51110, France
| | - Julien Couvreur
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, Pomacle 51110, France
| | - Blandine Godon
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, Pomacle 51110, France
| | - Fanny Brunissen
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, Pomacle 51110, France
| | | | - Florent Allais
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, Pomacle 51110, France
| | - Michel Lopez
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, Pomacle 51110, France.
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21
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Wood JC, Grové J, Marcellin E, Heffernan JK, Hu S, Yuan Z, Virdis B. Strategies to improve viability of a circular carbon bioeconomy-A techno-economic review of microbial electrosynthesis and gas fermentation. WATER RESEARCH 2021; 201:117306. [PMID: 34153823 DOI: 10.1016/j.watres.2021.117306] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 04/30/2021] [Accepted: 05/24/2021] [Indexed: 06/13/2023]
Abstract
A circular carbon bioeconomy has potential to halt atmospheric accumulation of greenhouse gases causing climate change and sustainably produce chemical, agricultural and fuel products. Here, we report application of a simplified technoeconomic assessment to critically review two approaches in this space - microbial electrosynthesis and gas fermentation. For microbial electrosynthesis, decoupling of surface-dependant abiotic process for electron delivery from volume-dependant biotic carbon fixation, is shown as the only economically viable strategy to scale-up due to comparatively low biofilm electron consumption rate. This is effectively an electrolyser-assisted gas fermentation system. Targeting high-value products, such as protein for human food consumption is one of the few pathways forward for electrolyser-assisted gas fermentation. Alternatively, gas fermentation of reformed biogas presents an interesting and potentially more sustainable implementation pathway to improve economic viability of chemicals. This critical review suggests linking water treatment resource recovery with gas fermentation is attractive for bioplastics and butanol in terms of competitiveness and market demand.
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Affiliation(s)
- Jamin C Wood
- Advanced Water Management Centre, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Johannes Grové
- Energy & Poverty Group, School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Esteban Marcellin
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia; Queensland Node of Metabolomics Australia, The University of Queensland, Brisbane, QLD 4072, Australia
| | - James K Heffernan
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Shihu Hu
- Advanced Water Management Centre, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Zhiguo Yuan
- Advanced Water Management Centre, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Bernardino Virdis
- Advanced Water Management Centre, The University of Queensland, Brisbane, QLD 4072, Australia.
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22
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Lei D, Qiu Z, Qiao J, Zhao GR. Plasticity engineering of plant monoterpene synthases and application for microbial production of monoterpenoids. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:147. [PMID: 34193244 PMCID: PMC8247113 DOI: 10.1186/s13068-021-01998-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 06/18/2021] [Indexed: 05/17/2023]
Abstract
Plant monoterpenoids with structural diversities have extensive applications in food, cosmetics, pharmaceuticals, and biofuels. Due to the strong dependence on the geographical locations and seasonal annual growth of plants, agricultural production for monoterpenoids is less effective. Chemical synthesis is also uneconomic because of its high cost and pollution. Recently, emerging synthetic biology enables engineered microbes to possess great potential for the production of plant monoterpenoids. Both acyclic and cyclic monoterpenoids have been synthesized from fermentative sugars through heterologously reconstructing monoterpenoid biosynthetic pathways in microbes. Acting as catalytic templates, plant monoterpene synthases (MTPSs) take elaborate control of the monoterpenoids production. Most plant MTPSs have broad substrate or product properties, and show functional plasticity. Thus, the substrate selectivity, product outcomes, or enzymatic activities can be achieved by the active site mutations and domain swapping of plant MTPSs. This makes plasticity engineering a promising way to engineer MTPSs for efficient production of natural and non-natural monoterpenoids in microbial cell factories. Here, this review summarizes the key advances in plasticity engineering of plant MTPSs, including the fundamental aspects of functional plasticity, the utilization of natural and non-natural substrates, and the outcomes from product isomers to complexity-divergent monoterpenoids. Furthermore, the applications of plasticity engineering for improving monoterpenoids production in microbes are addressed.
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Affiliation(s)
- Dengwei Lei
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, China
| | - Zetian Qiu
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, China
| | - Jianjun Qiao
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, China
- SynBio Research Platform, Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, China
| | - Guang-Rong Zhao
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, China.
- SynBio Research Platform, Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, China.
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23
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Chen Y, Garg N, Luo H, Kontogeorgis GM, Woodley JM. Ionic liquid-based in situ product removal design exemplified for an acetone-butanol-ethanol fermentation. Biotechnol Prog 2021; 37:e3183. [PMID: 34129284 DOI: 10.1002/btpr.3183] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 06/07/2021] [Accepted: 06/11/2021] [Indexed: 01/10/2023]
Abstract
Selecting an appropriate separation technique is essential for the application of in situ product removal (ISPR) technology in biological processes. In this work, a three-stage systematic design method is proposed as a guide to integrate ionic liquid (IL)-based separation techniques into ISPR. This design method combines the selection of a suitable ISPR processing scheme, the optimal design of an IL-based liquid-liquid extraction (LLE) system followed by process simulation and evaluation. As a proof of concept, results for a conventional acetone-butanol-ethanol fermentation are presented (40,000 ton/year butanol production). In this application, ILs tetradecyl(trihexyl)phosphonium tetracyanoborate ([TDPh][TCB]) and tetraoctylammonium 2-methyl-1-naphthoate ([TOA] [MNaph]) are identified as the optimal solvents from computer-aided IL design (CAILD) method and reported experimental data, respectively. The dynamic simulation results for the fermentation process show that, the productivity of IL-based in situ (fed-batch) process and in situ (batch) process is around 2.7 and 1.8fold that of base case. Additionally, the IL-based in situ (fed-batch) process and in situ (batch) process also have significant energy savings (79.6% and 77.6%) when compared to the base case.
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Affiliation(s)
- Yuqiu Chen
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Lyngby, Denmark
| | - Nipun Garg
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Lyngby, Denmark
| | - Hao Luo
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Lyngby, Denmark
| | - Georgios M Kontogeorgis
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Lyngby, Denmark
| | - John M Woodley
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Lyngby, Denmark
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24
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An integrative approach to improving the biocatalytic reactions of whole cells expressing recombinant enzymes. World J Microbiol Biotechnol 2021; 37:105. [PMID: 34037845 DOI: 10.1007/s11274-021-03075-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/17/2021] [Indexed: 10/21/2022]
Abstract
Biotransformation is a selective, stereospecific, efficient, and environment friendly method, compared to chemical synthesis, and a feasible tool for industrial and pharmaceutical applications. The design of biocatalysts using enzyme engineering and metabolic engineering tools has been widely reviewed. However, less importance has been given to the biocatalytic reaction of whole cells expressing recombinant enzymes. Along with the remarkable development of biotechnology tools, a variety of techniques have been applied to improve the biocatalytic reaction of whole cell biotransformation. In this review, techniques related to the biocatalytic reaction are examined, reorganized, and summarized via an integrative approach. Moreover, equilibrium-shifted biotransformation is reviewed for the first time.
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25
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Löser C, Kupsch C, Walther T, Hoffmann A. A new approach for balancing the microbial synthesis of ethyl acetate and other volatile metabolites during aerobic bioreactor cultivations. Eng Life Sci 2021; 21:137-153. [PMID: 33716613 PMCID: PMC7923609 DOI: 10.1002/elsc.202000047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 10/23/2020] [Indexed: 01/05/2023] Open
Abstract
Ethyl acetate is an organic solvent with many industrial applications, currently produced by energy-intensive chemical processes based on fossil carbon resources. Ethyl acetate can be synthesized from renewable sugars by yeasts like Kluyveromyces marxianus in aerobic processes. However, ethyl acetate is highly volatile and thus stripped from aerated cultivation systems which complicate the quantification of the produced ester. Synthesis of volatile metabolites is commonly monitored by repeated analysis of metabolite concentrations in both the gas and liquid phase. In this study, a model-based method for quantifying the synthesis and degradation of volatile metabolites was developed. This quantification of volatiles is solely based on repeatedly measured gas-phase concentrations and allows calculation of reaction rates and yields in high temporal resolution. Parameters required for these calculations were determined in abiotic stripping tests. The developed method was validated for ethyl acetate, ethanol and acetaldehyde which were synthesized by K. marxianus DSM 5422 during an iron-limited batch cultivation; it was shown that the presented method is more precise and less time-consuming than the conventional method. The biomass-specific synthesis rate and the yield of ethyl acetate varied over time and exhibited distinct momentary maxima of 0.50 g g‒1h‒1 and 0.38 g g‒1 at moderate iron limitation.
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Affiliation(s)
- Christian Löser
- Chair of Bioprocess Engineering, Institute of Natural Materials TechnologyTechnische Universität DresdenDresdenGermany
| | - Christian Kupsch
- Chair of Bioprocess Engineering, Institute of Natural Materials TechnologyTechnische Universität DresdenDresdenGermany
| | - Thomas Walther
- Chair of Bioprocess Engineering, Institute of Natural Materials TechnologyTechnische Universität DresdenDresdenGermany
| | - Andreas Hoffmann
- Chair of Bioprocess Engineering, Institute of Natural Materials TechnologyTechnische Universität DresdenDresdenGermany
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26
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Co-production of volatile fatty acids and biogas from an anaerobic digestion system using in situ extraction. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117891] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Soares-Castro P, Soares F, Santos PM. Current Advances in the Bacterial Toolbox for the Biotechnological Production of Monoterpene-Based Aroma Compounds. Molecules 2020; 26:molecules26010091. [PMID: 33379215 PMCID: PMC7794910 DOI: 10.3390/molecules26010091] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/19/2020] [Accepted: 12/22/2020] [Indexed: 11/16/2022] Open
Abstract
Monoterpenes are plant secondary metabolites, widely used in industrial processes as precursors of important aroma compounds, such as vanillin and (-)-menthol. However, the physicochemical properties of monoterpenes make difficult their conventional conversion into value-added aromas. Biocatalysis, either by using whole cells or enzymes, may overcome such drawbacks in terms of purity of the final product, ecological and economic constraints of the current catalysis processes or extraction from plant material. In particular, the ability of oxidative enzymes (e.g., oxygenases) to modify the monoterpene backbone, with high regio- and stereo-selectivity, is attractive for the production of "natural" aromas for the flavor and fragrances industries. We review the research efforts carried out in the molecular analysis of bacterial monoterpene catabolic pathways and biochemical characterization of the respective key oxidative enzymes, with particular focus on the most relevant precursors, β-pinene, limonene and β-myrcene. The presented overview of the current state of art demonstrates that the specialized enzymatic repertoires of monoterpene-catabolizing bacteria are expanding the toolbox towards the tailored and sustainable biotechnological production of values-added aroma compounds (e.g., isonovalal, α-terpineol, and carvone isomers) whose implementation must be supported by the current advances in systems biology and metabolic engineering approaches.
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28
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Červeňanský I, Mihaľ M, Markoš J. Pertraction-adsorption in situ product removal system: Intensification of 2-phenyelthanol bioproduction. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117283] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Tippkötter N, Roth J. Purified Butanol from Lignocellulose – Solvent‐Impregnated Resins for an Integrated Selective Removal. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.202000200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nils Tippkötter
- University of Applied Sciences Aachen Bioprocess Engineering Heinrich-Mußmann-Straße 1 52428 Jülich Germany
| | - Jasmine Roth
- University of Applied Sciences Aachen Bioprocess Engineering Heinrich-Mußmann-Straße 1 52428 Jülich Germany
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30
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Teke GM, Pott RWM. Design and evaluation of a continuous semipartition bioreactor for in situ liquid-liquid extractive fermentation. Biotechnol Bioeng 2020; 118:58-71. [PMID: 32876954 DOI: 10.1002/bit.27550] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 08/04/2020] [Accepted: 08/29/2020] [Indexed: 11/09/2022]
Abstract
Extractive fermentation (or in situ product removal (ISPR)) is an operational method used to combat product inhibition in fermentations. To achieve ISPR, different separation techniques, modes of operation and physical reactor configurations have been proposed. However, the relative paucity of industrial application necessitates continued investigation into reactor systems. This article outlines a bioreactor designed to facilitate in situ product extraction and recovery, through adapting the reaction volume to include a settler and solvent extraction and recycle section. This semipartition bioreactor is proposed as a new mode of operation for continuous liquid-liquid extractive fermentation. The design is demonstrated as a modified bench-top fermentation vessel, initially analysed in terms of fluid dynamic studies, in a model two-liquid phase system. A continuous abiotic simulation of lactic acid (LA) fermentation is then demonstrated. The results show that mixing in the main reaction vessel is unaffected by the inserted settling zone, and that the size of the settling tube effects the maximum volumetric removal rate. In these tests the largest settling tube gave a potential continuous volumetric removal rate of 7.63 ml/min; sufficiently large to allow for continuous product extraction even in a highly productive fermentation. To demonstrate the applicability of the developed reactor, an abiotic simulation of a LA fermentation was performed. LA was added to reactor continuously at a rate of 33ml/h, while continuous in situ extraction removed the LA using 15% trioctylamine in oleyl alcohol. The reactor showed stable LA concentration of 1 g/L, with the balance of the LA successfully extracted and recovered using back extraction. This study demonstrates a potentially useful physical configuration for continuous in situ extraction.
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Affiliation(s)
- George M Teke
- Department of Process Engineering, University of Stellenbosch, Stellenbosch, South Africa
| | - Robert W M Pott
- Department of Process Engineering, University of Stellenbosch, Stellenbosch, South Africa
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31
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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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32
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Dong Y, Li X, Duan J, Qin Y, Yang X, Ren J, Li G. Improving the Yield of Xenocoumacin 1 Enabled by In Situ Product Removal. ACS OMEGA 2020; 5:20391-20398. [PMID: 32832792 PMCID: PMC7439382 DOI: 10.1021/acsomega.0c02357] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/20/2020] [Indexed: 06/11/2023]
Abstract
Xenocoumacin 1 (Xcn1), a major antimicrobial compound produced by Xenorhabdus nematophila CB6, has great potential to be developed into a novel biofungicide. However, its low yield in the producing cells has limited its possible commercial applications. In this study, we explored the effect of in situ product removal (ISPR), a well-established recovery technique, with the use of macroporous resin X-5 on the production of Xcn1 in a fermentation setting. Relative to the routine fermentation process, the yield of Xcn1 was improved from 42.5 to 73.8 μg/mL (1.7-fold) and 12.9 to 60.3 μg/mL (4.7-fold) in three and ten days, respectively. By agar diffusion plate and growth inhibition assays, the antibiotic activity against Bacillus subtilis and Alternaria solani was also found to be improved. Further study revealed that protection of Xcn1 against degradation and decrease in cell self-toxicity as well as upregulation of biosynthesis-related genes of Xcn1 at the transcription level contributed to yield improvement of Xcn1. In addition, resin X-5 significantly altered the metabolite profile of X. nematophila CB6, which could promote the discovery of new antibiotics.
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Affiliation(s)
- Yijie Dong
- State
Key Laboratory for Biology of Plant Diseases and Insect Pests/Key
Laboratory of Control of Biological Hazard Factors (Plant Origin)
for Agri-product Quality and Safety, Ministry of Agriculture, Institute
of Plant Protection, Chinese Academy of
Agricultural Sciences, Beijing 100081, People’s Republic
of China
- Guangdong
Provincial Key Laboratory of Microbial Culture Collection and Application,
State Key Laboratory of Applied Microbiology Southern China, Guangdong
Institute of Microbiology, Guangdong Academy
of Sciences, Guangzhou 510070, People’s Republic of China
| | - Xiaohui Li
- State
Key Laboratory for Biology of Plant Diseases and Insect Pests/Key
Laboratory of Control of Biological Hazard Factors (Plant Origin)
for Agri-product Quality and Safety, Ministry of Agriculture, Institute
of Plant Protection, Chinese Academy of
Agricultural Sciences, Beijing 100081, People’s Republic
of China
| | - Jiaqi Duan
- State
Key Laboratory for Biology of Plant Diseases and Insect Pests/Key
Laboratory of Control of Biological Hazard Factors (Plant Origin)
for Agri-product Quality and Safety, Ministry of Agriculture, Institute
of Plant Protection, Chinese Academy of
Agricultural Sciences, Beijing 100081, People’s Republic
of China
| | - Youcai Qin
- State
Key Laboratory for Biology of Plant Diseases and Insect Pests/Key
Laboratory of Control of Biological Hazard Factors (Plant Origin)
for Agri-product Quality and Safety, Ministry of Agriculture, Institute
of Plant Protection, Chinese Academy of
Agricultural Sciences, Beijing 100081, People’s Republic
of China
| | - Xiufen Yang
- State
Key Laboratory for Biology of Plant Diseases and Insect Pests/Key
Laboratory of Control of Biological Hazard Factors (Plant Origin)
for Agri-product Quality and Safety, Ministry of Agriculture, Institute
of Plant Protection, Chinese Academy of
Agricultural Sciences, Beijing 100081, People’s Republic
of China
| | - Jie Ren
- State
Key Laboratory for Biology of Plant Diseases and Insect Pests/Key
Laboratory of Control of Biological Hazard Factors (Plant Origin)
for Agri-product Quality and Safety, Ministry of Agriculture, Institute
of Plant Protection, Chinese Academy of
Agricultural Sciences, Beijing 100081, People’s Republic
of China
| | - Guangyue Li
- State
Key Laboratory for Biology of Plant Diseases and Insect Pests/Key
Laboratory of Control of Biological Hazard Factors (Plant Origin)
for Agri-product Quality and Safety, Ministry of Agriculture, Institute
of Plant Protection, Chinese Academy of
Agricultural Sciences, Beijing 100081, People’s Republic
of China
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33
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Kaur G, Garcia-Gonzalez L, Elst K, Truzzi F, Bertin L, Kaushik A, Balakrishnan M, De Wever H. Reactive extraction for in-situ carboxylate recovery from mixed culture fermentation. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2020.107641] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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34
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Zhu H, Li X, Pan Y, Liu G, Wu H, Jiang M, Jin W. Fluorinated PDMS membrane with anti-biofouling property for in-situ biobutanol recovery from fermentation-pervaporation coupled process. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118225] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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35
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Woodley JM. Towards the sustainable production of bulk-chemicals using biotechnology. N Biotechnol 2020; 59:59-64. [PMID: 32693028 DOI: 10.1016/j.nbt.2020.07.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 07/06/2020] [Accepted: 07/07/2020] [Indexed: 01/06/2023]
Abstract
The design and development of new routes for the production of sustainable bulk-chemicals requires focus on feedstock, conversion technology and downstream product recovery. This brief article discusses some of the constraints with using fermentation and suggests the removal of some constraints by using microbial biocatalysis or enzyme biocatalysis, which give a number of benefits in the context of the requirements for bulk-chemical production. Some potential process concepts are described, for products in the suitable low-price range. These examples (biodiesel, furfurals and amines) are used to illustrate the power of biocatalysis. Suggestions for future research efforts beyond molecular biology, involving process-based concepts, are also discussed.
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Affiliation(s)
- John M Woodley
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800, Lyngby, Denmark.
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Iyyappan J, Baskar G, Bharathiraja B, Gopinath M. Enhanced malic acid production using Aspergillus niger coupled with in situ product recovery. BIORESOURCE TECHNOLOGY 2020; 308:123259. [PMID: 32273160 DOI: 10.1016/j.biortech.2020.123259] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/23/2020] [Accepted: 03/24/2020] [Indexed: 06/11/2023]
Abstract
In the present investigation, recovery of malic acid from the fermentation broth was performed by using in situ reactive extraction method employing different combination of amine and solvent systems. Totally six solvent mixtures were tested for toxicity on Aspergillus niger PJR1. Further, effect of solvent mixture concentration on separation of malic acid was investigated. Solvent system consisting of 2 M of trioctylamine in 1-octanol was found to be non-toxic to A. niger PJR1 and resulted in the maximum partition coefficient of 0.75 when the solvent mixture to liquid ratio of 1:2 used. A. niger PJR1 from crude glycerol using in situ reactive batch fermentation resulted in the maximum malic acid titer of 115.67 ± 3.5 g/L with the productivity of 0.53 g/L.h after 216 h. Further, fed batch extractive fermentation with crude glycerol resulted in malic acid titer of 131.48 ± 3.4 g/L with the productivity of 0.45 g/L.h after 288 h. Thus reactive extraction combined with in situ fermentation could become effective method for enhanced malic acid production.
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Affiliation(s)
- J Iyyappan
- Vel Tech High Tech Dr. Rangarajan Dr. Sakunthala Engineering College, Chennai 600062, India
| | - G Baskar
- Department of Biotechnology, St. Joseph's College of Engineering, Chennai 600119, India
| | - B Bharathiraja
- Vel Tech High Tech Dr. Rangarajan Dr. Sakunthala Engineering College, Chennai 600062, India.
| | - M Gopinath
- Vel Tech High Tech Dr. Rangarajan Dr. Sakunthala Engineering College, Chennai 600062, India
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Enhancing effect of macroporous adsorption resin on gamma-aminobutyric acid production by Enterococcus faecium in whole-cell biotransformation system. Amino Acids 2020; 52:771-780. [DOI: 10.1007/s00726-020-02850-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 04/29/2020] [Indexed: 12/12/2022]
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Wiltschi B, Cernava T, Dennig A, Galindo Casas M, Geier M, Gruber S, Haberbauer M, Heidinger P, Herrero Acero E, Kratzer R, Luley-Goedl C, Müller CA, Pitzer J, Ribitsch D, Sauer M, Schmölzer K, Schnitzhofer W, Sensen CW, Soh J, Steiner K, Winkler CK, Winkler M, Wriessnegger T. Enzymes revolutionize the bioproduction of value-added compounds: From enzyme discovery to special applications. Biotechnol Adv 2020; 40:107520. [DOI: 10.1016/j.biotechadv.2020.107520] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 10/18/2019] [Accepted: 01/13/2020] [Indexed: 12/11/2022]
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Braga A, Faria N. Bioprocess Optimization for the Production of Aromatic Compounds With Metabolically Engineered Hosts: Recent Developments and Future Challenges. Front Bioeng Biotechnol 2020; 8:96. [PMID: 32154231 PMCID: PMC7044121 DOI: 10.3389/fbioe.2020.00096] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 02/03/2020] [Indexed: 12/18/2022] Open
Abstract
The most common route to produce aromatic chemicals - organic compounds containing at least one benzene ring in their structure - is chemical synthesis. These processes, usually starting from an extracted fossil oil molecule such as benzene, toluene, or xylene, are highly environmentally unfriendly due to the use of non-renewable raw materials, high energy consumption and the usual production of toxic by-products. An alternative way to produce aromatic compounds is extraction from plants. These extractions typically have a low yield and a high purification cost. This motivates the search for alternative platforms to produce aromatic compounds through low-cost and environmentally friendly processes. Microorganisms are able to synthesize aromatic amino acids through the shikimate pathway. The construction of microbial cell factories able to produce the desired molecule from renewable feedstock becomes a promising alternative. This review article focuses on the recent advances in microbial production of aromatic products, with a special emphasis on metabolic engineering strategies, as well as bioprocess optimization. The recent combination of these two techniques has resulted in the development of several alternative processes to produce phenylpropanoids, aromatic alcohols, phenolic aldehydes, and others. Chemical species that were unavailable for human consumption due to the high cost and/or high environmental impact of their production, have now become accessible.
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Affiliation(s)
- Adelaide Braga
- Centre of Biological Engineering, University of Minho, Braga, Portugal
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40
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Woodley JM. Advances in biological conversion technologies: new opportunities for reaction engineering. REACT CHEM ENG 2020. [DOI: 10.1039/c9re00422j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction engineering needs to embrace biological conversion technologies, on the road to identify more sustainable routes for chemical manufacture.
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Affiliation(s)
- John M. Woodley
- Department of Chemical and Biochemical Engineering
- Technical University of Denmark (DTU)
- DK-2800 Kgs. Lyngby
- Denmark
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41
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Song JW, Seo JH, Oh DK, Bornscheuer UT, Park JB. Design and engineering of whole-cell biocatalytic cascades for the valorization of fatty acids. Catal Sci Technol 2020. [DOI: 10.1039/c9cy01802f] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
This review presents the key factors to construct a productive whole-cell biocatalytic cascade exemplified for the biotransformation of renewable fatty acids.
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Affiliation(s)
- Ji-Won Song
- Department of Food Science and Engineering
- Ewha Womans University
- Seoul 03760
- Republic of Korea
| | - Joo-Hyun Seo
- Department of Bio and Fermentation Convergence Technology
- Kookmin University
- Seoul 02707
- Republic of Korea
| | - Doek-Kun Oh
- Department of Bioscience and Biotechnology
- Konkuk University
- Seoul 143-701
- Republic of Korea
| | - Uwe T. Bornscheuer
- Institute of Biochemistry
- Department of Biotechnology & Enzyme Catalysis
- Greifswald University
- 17487 Greifswald
- Germany
| | - Jin-Byung Park
- Department of Food Science and Engineering
- Ewha Womans University
- Seoul 03760
- Republic of Korea
- Institute of Molecular Microbiology and Biosystems Engineering
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42
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Zhu H, Liu G, Yuan J, Chen T, Xin F, Jiang M, Fan Y, Jin W. In-situ recovery of bio-butanol from glycerol fermentation using PDMS/ceramic composite membrane. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115811] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Van Hecke W, Bockrath R, De Wever H. Effects of moderately elevated pressure on gas fermentation processes. BIORESOURCE TECHNOLOGY 2019; 293:122129. [PMID: 31558339 DOI: 10.1016/j.biortech.2019.122129] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 09/04/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
Industrial biotechnology has a potential to tackle harmful CO2 emissions and turn CO2 into a valuable commodity. However, a major technical obstacle in gas fermentations is the limited gas mass transfer rate. Increasing system pressure is a way to increase the driving force for mass transfer. This review presents critical aspects of gas fermentation at elevated pressure, with a specific focus on results obtained at 5-10 bar. While a solid foundation for high pressure fermentations has already been laid in the past, mainly to enhance oxygen transfer rates, it can be concluded that fermentations at moderately elevated pressures using gases such as CO2, CH4, CO, H2, O2 are still underexplored. Microbial growth rates and product formation can be improved at higher pressures, but in general, titers and productivities need to be increased to allow a further industrialization. Hence, more systematic investigations and techno-economic assessments are required.
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Affiliation(s)
- Wouter Van Hecke
- Separation and Conversion Technology, Flemish Institute for Technological Research (VITO), Boeretang 200, Mol, Belgium
| | | | - Heleen De Wever
- Separation and Conversion Technology, Flemish Institute for Technological Research (VITO), Boeretang 200, Mol, Belgium.
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Chen Y, Koumaditi E, Gani R, Kontogeorgis GM, Woodley JM. Computer-aided design of ionic liquids for hybrid process schemes. Comput Chem Eng 2019. [DOI: 10.1016/j.compchemeng.2019.106556] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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45
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Vincent RH, Parent JS, Daugulis AJ. Using poly(vinyldodecylimidazolium bromide) for the in-situ product recovery of n-butanol. Biotechnol Prog 2019; 36:e2926. [PMID: 31587514 DOI: 10.1002/btpr.2926] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 09/17/2019] [Accepted: 09/27/2019] [Indexed: 12/13/2022]
Abstract
The mitigation of end-product inhibition during the biosynthesis of n-butanol is demonstrated for an in-situ product recovery (ISPR) system employing a poly(ionic liquid) (PIL) absorbent. The thermodynamic affinity of poly(vinyldodecylimidazolium bromide) [P(VC12 ImBr)] for n-butanol, acetone and ethanol versus water was measured at conditions experienced in a typical acetone-ethanol-butanol (ABE) fermentation. In addition to providing a high n-butanol partition coefficient (PC = 6.5) and selectivity (αBuOH/water = 46), P(VC12 ImBr) is shown to be biocompatible with Saccharomyces cerevisiae and Clostridium acetobutylicum. Furthermore, the diffusivity of n-butanol in a hydrated PIL provides absorption rates that support ISPR applications. Using a 5 wt% PIL phase fraction relative to the aqueous phase mass, P(VC12 ImBr) improved the volumetric productivity of a batch ABE ISPR process by 31% relative to a control fermentation. The concentration of n-butanol in the P(VC12 ImBr) phase was sufficient to increase the alcohol concentration from 1.5 wt% in the fermentation medium to 25 wt% in the saturated PIL, thereby facilitating downstream n-butanol recovery.
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Affiliation(s)
- Rachel H Vincent
- Department of Chemical Engineering, Queen's University, Kingston, Ontario, Canada
| | - J Scott Parent
- Department of Chemical Engineering, Queen's University, Kingston, Ontario, Canada
| | - Andrew J Daugulis
- Department of Chemical Engineering, Queen's University, Kingston, Ontario, Canada
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46
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47
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Yu L, Wu F, Chen G. Next‐Generation Industrial Biotechnology‐Transforming the Current Industrial Biotechnology into Competitive Processes. Biotechnol J 2019; 14:e1800437. [DOI: 10.1002/biot.201800437] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 02/01/2019] [Indexed: 01/16/2023]
Affiliation(s)
- Lin‐Ping Yu
- Ministry of Education Key Laboratory for Bioinformatics, School of Life SciencesTsinghua University New Biology Building 100084 Beijing China
- Center for Synthetic and Systems BiologyTsinghua University New Biology Building 100084 Beijing China
- Tsinghua‐Peking Center for Life SciencesTsinghua University New Biology Building 100084 Beijing China
| | - Fu‐Qing Wu
- Ministry of Education Key Laboratory for Bioinformatics, School of Life SciencesTsinghua University New Biology Building 100084 Beijing China
- Center for Synthetic and Systems BiologyTsinghua University New Biology Building 100084 Beijing China
- Tsinghua‐Peking Center for Life SciencesTsinghua University New Biology Building 100084 Beijing China
| | - Guo‐Qiang Chen
- Ministry of Education Key Laboratory for Bioinformatics, School of Life SciencesTsinghua University New Biology Building 100084 Beijing China
- Center for Synthetic and Systems BiologyTsinghua University New Biology Building 100084 Beijing China
- Tsinghua‐Peking Center for Life SciencesTsinghua University New Biology Building 100084 Beijing China
- Manchester Institute of Biotechnology, Centre for Synthetic BiologyThe University of Manchester 131 Princess Street Manchester M1 7DN UK
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48
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Accelerating the implementation of biocatalysis in industry. Appl Microbiol Biotechnol 2019; 103:4733-4739. [PMID: 31049622 DOI: 10.1007/s00253-019-09796-x] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 03/24/2019] [Accepted: 03/25/2019] [Indexed: 01/26/2023]
Abstract
Despite enormous progress in protein engineering, complemented by bioprocess engineering, the revolution awaiting the application of biocatalysis in the fine chemical industry has still not been fully realized. In order to achieve that, further research is required on several topics, including (1) rapid methods for protein engineering using machine learning, (2) mathematical modelling of multi-enzyme cascade processes, (3) process standardization, (4) continuous process technology, (5) methods to identify improvements required to achieve industrial implementation, (6) downstream processing, (7) enzyme stability modelling and prediction, as well as (8) new reactor technology. In this brief mini-review, the status of each of these topics will be briefly discussed.
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49
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Flores A, Wang X, Nielsen DR. Recent trends in integrated bioprocesses: aiding and expanding microbial biofuel/biochemical production. Curr Opin Biotechnol 2019; 57:82-87. [PMID: 30877994 DOI: 10.1016/j.copbio.2019.02.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 01/16/2019] [Accepted: 02/05/2019] [Indexed: 01/04/2023]
Abstract
Microbial biosynthesis of fuels and chemicals represents a promising route for their renewable production. Product toxicity, however, represents a common challenge limiting the efficacy of this approach. Integrated bioprocesses incorporating in situ product separation are poised to help address this intrinsic problem, but suffer their own unique shortcomings. To improve and expand the utility of this versatile bioprocessing strategy, recent innovations have focused on developing more effective separation materials and novel process configurations, as well as adapting designs to accommodate semi-continuous modes of operation. As a result, integrated bioprocesses are finding new applications to aid the biosynthesis of an ever-growing list of bioproducts. Emerging applications, meanwhile, are exploring the further expansion of such designs to interface microbial and chemical catalysts, leading to new and versatile routes for the one-pot synthesis of an even greater diversity of renewable products.
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Affiliation(s)
- Andrew Flores
- Chemical Engineering Program, School for Engineering of Matter, Transport, and Energy, Arizona State University, United States
| | - Xuan Wang
- School of Life Sciences, Arizona State University, United States
| | - David R Nielsen
- Chemical Engineering Program, School for Engineering of Matter, Transport, and Energy, Arizona State University, United States.
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50
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