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Ammar W, Lacoue-Negre M, Methivier A, Manko M. Monitoring of sugars adsorption breakthrough curves with online Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 309:123868. [PMID: 38217991 DOI: 10.1016/j.saa.2024.123868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 01/15/2024]
Abstract
We introduce a new application for online Raman spectroscopy to monitor adsorption breakthrough curves of a glucose and xylose mixtures. Univariate and multivariate Partial Least Squares (PLS) calibration models are developed for each sugar when they are dissolved in water and in the case of the ethanol addition as a cosolvent. The models are validated by performing actual breakthrough experiments in a liquid phase using a column packed with a zeolite adsorbent. The first statistical moments of predicted curves are compared to the reference curves obtained with offline High-Performance Liquid Chromatography (HPLC). Glucose and xylose univariate predictions in the presence or absence of ethanol in the mixture are accurate and no improvements are found with the PLS models. Spectral subtraction coupled with the first derivative proved to be effective pretreatments to develop robust univariate models.
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Affiliation(s)
- Wassim Ammar
- IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, 69360 Solaize, France
| | - Marion Lacoue-Negre
- IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, 69360 Solaize, France
| | - Alain Methivier
- IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, 69360 Solaize, France
| | - Maria Manko
- IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, 69360 Solaize, France.
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2
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Yang N, Guerin C, Kokanyan N, Perré P. Raman spectroscopy applied to online monitoring of a bioreactor: Tackling the limit of detection. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 304:123343. [PMID: 37690399 DOI: 10.1016/j.saa.2023.123343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 06/29/2023] [Accepted: 09/02/2023] [Indexed: 09/12/2023]
Abstract
An in-situ monitoring model of alcoholic fermentation based on Raman spectroscopy was developed in this study. The optimized acquisition parameters were an 80 s exposure time with three accumulations. Standard solutions were prepared and used to populate a learning database. Two groups of mixed solutions were prepared for a validation database to simulate fermentation at different conditions. First, all spectra of the standards were evaluated by principal component analysis (PCA) to identify the spectral features of the target substances and observe their distribution and outliers. Second, three multivariate calibration models for prediction were developed using the partial least squares (PLS) method, either on the whole learning database or subsets. The limit of detection (LOD) of each model was estimated by using the root mean square error of cross validation (RMSECV), and the prediction ability was further tested with both validation datasets. As a result, improved LODs were obtained: 0.42 and 1.55 g·L-1 for ethanol and glucose using a sub-learning dataset with a concentration range of 0.5 to 10 g·L-1. An interesting prediction result was obtained from a cross-mixed validation set, which had a root mean square error of prediction (RMSEP) for ethanol and glucose of only 3.21 and 1.69, even with large differences in mixture concentrations. This result not only indicates that a model based on standard solutions can predict the concentration of a mixed solution in a complex matrix but also offers good prospects for applying the model in real bioreactors.
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Affiliation(s)
- Ning Yang
- Université Paris-Saclay, CentraleSupélec, Laboratoire de Génie des Procédés et Matériaux, Centre Européen de Biotechnologie et de Bioéconomie (CEBB), 3 rue des Rouges Terres 51110 Pomacle, France; CentraleSupélec, Chaire Photonique, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), Metz F-57070, France; Université de Lorraine, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), Metz F-57070, France.
| | - Cédric Guerin
- Université Paris-Saclay, CentraleSupélec, Laboratoire de Génie des Procédés et Matériaux, Centre Européen de Biotechnologie et de Bioéconomie (CEBB), 3 rue des Rouges Terres 51110 Pomacle, France
| | - Ninel Kokanyan
- CentraleSupélec, Chaire Photonique, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), Metz F-57070, France; Université de Lorraine, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), Metz F-57070, France
| | - Patrick Perré
- Université Paris-Saclay, CentraleSupélec, Laboratoire de Génie des Procédés et Matériaux, Centre Européen de Biotechnologie et de Bioéconomie (CEBB), 3 rue des Rouges Terres 51110 Pomacle, France; Université Paris-Saclay, CentraleSupélec, Laboratoire de Génie des Procédés et Matériaux (LGPM), Gif-sur-Yvette, France
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3
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Dzurendova S, Olsen PM, Byrtusová D, Tafintseva V, Shapaval V, Horn SJ, Kohler A, Szotkowski M, Marova I, Zimmermann B. Raman spectroscopy online monitoring of biomass production, intracellular metabolites and carbon substrates during submerged fermentation of oleaginous and carotenogenic microorganisms. Microb Cell Fact 2023; 22:261. [PMID: 38110983 PMCID: PMC10729511 DOI: 10.1186/s12934-023-02268-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 12/10/2023] [Indexed: 12/20/2023] Open
Abstract
BACKGROUND Monitoring and control of both growth media and microbial biomass is extremely important for the development of economical bioprocesses. Unfortunately, process monitoring is still dependent on a limited number of standard parameters (pH, temperature, gasses etc.), while the critical process parameters, such as biomass, product and substrate concentrations, are rarely assessable in-line. Bioprocess optimization and monitoring will greatly benefit from advanced spectroscopy-based sensors that enable real-time monitoring and control. Here, Fourier transform (FT) Raman spectroscopy measurement via flow cell in a recirculatory loop, in combination with predictive data modeling, was assessed as a fast, low-cost, and highly sensitive process analytical technology (PAT) system for online monitoring of critical process parameters. To show the general applicability of the method, submerged fermentation was monitored using two different oleaginous and carotenogenic microorganisms grown on two different carbon substrates: glucose fermentation by yeast Rhodotorula toruloides and glycerol fermentation by marine thraustochytrid Schizochytrium sp. Additionally, the online FT-Raman spectroscopy approach was compared with two at-line spectroscopic methods, namely FT-Raman and FT-infrared spectroscopies in high throughput screening (HTS) setups. RESULTS The system can provide real-time concentration data on carbon substrate (glucose and glycerol) utilization, and production of biomass, carotenoid pigments, and lipids (triglycerides and free fatty acids). Robust multivariate regression models were developed and showed high level of correlation between the online FT-Raman spectral data and reference measurements, with coefficients of determination (R2) in the 0.94-0.99 and 0.89-0.99 range for all concentration parameters of Rhodotorula and Schizochytrium fermentation, respectively. The online FT-Raman spectroscopy approach was superior to the at-line methods since the obtained information was more comprehensive, timely and provided more precise concentration profiles. CONCLUSIONS The FT-Raman spectroscopy system with a flow measurement cell in a recirculatory loop, in combination with prediction models, can simultaneously provide real-time concentration data on carbon substrate utilization, and production of biomass, carotenoid pigments, and lipids. This data enables monitoring of dynamic behaviour of oleaginous and carotenogenic microorganisms, and thus can provide critical process parameters for process optimization and control. Overall, this study demonstrated the feasibility of using FT-Raman spectroscopy for online monitoring of fermentation processes.
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Affiliation(s)
- Simona Dzurendova
- Faculty of Science and Technology, Norwegian University of Life Sciences, Drøbakveien 31, P.O. Box 5003, 1432, Ås, Norway
| | - Pernille Margrethe Olsen
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, P.O. Box 5003, 1432, Ås, Norway
| | - Dana Byrtusová
- Faculty of Science and Technology, Norwegian University of Life Sciences, Drøbakveien 31, P.O. Box 5003, 1432, Ås, Norway
| | - Valeria Tafintseva
- Faculty of Science and Technology, Norwegian University of Life Sciences, Drøbakveien 31, P.O. Box 5003, 1432, Ås, Norway
| | - Volha Shapaval
- Faculty of Science and Technology, Norwegian University of Life Sciences, Drøbakveien 31, P.O. Box 5003, 1432, Ås, Norway
| | - Svein Jarle Horn
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, P.O. Box 5003, 1432, Ås, Norway
| | - Achim Kohler
- Faculty of Science and Technology, Norwegian University of Life Sciences, Drøbakveien 31, P.O. Box 5003, 1432, Ås, Norway
| | - Martin Szotkowski
- Institute of Food Science and Biotechnology, Faculty of Chemistry, Brno University of Technology, Purkyňova 464/118, Brno, 61200, Czech Republic
| | - Ivana Marova
- Institute of Food Science and Biotechnology, Faculty of Chemistry, Brno University of Technology, Purkyňova 464/118, Brno, 61200, Czech Republic
| | - Boris Zimmermann
- Faculty of Science and Technology, Norwegian University of Life Sciences, Drøbakveien 31, P.O. Box 5003, 1432, Ås, Norway.
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Zhang B, Gerald RE, Huang J. Miniaturized 7-in-1 fiber-optic Raman probe. OPTICS LETTERS 2022; 47:5561-5564. [PMID: 37219268 DOI: 10.1364/ol.473240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 09/26/2022] [Indexed: 05/24/2023]
Abstract
This Letter reports a miniature 7-in-1 fiber-optic Raman probe that eliminates the inelastic background Raman signal from a long-fused silica fiber. Its foremost purpose is to enhance a method for investigating extraordinarily tiny substances and effectively capturing Raman inelastic backscattered signals using optical fibers. We successfully used our home-built fiber taper device to combine seven multimode fibers into a single fiber taper with a probe diameter of approximately 35 µm. By experimentally comparing the traditional bare fiber-based Raman spectroscopy system with the miniaturized tapered fiber-optic Raman sensor using liquid solutions, the novel probe's capability is demonstrated. We observed that the miniaturized probe effectively removed the Raman background signal originating from the optical fiber and confirmed expected outcomes for a series of common Raman spectra.
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Veloso IIK, Rodrigues KCS, Ribeiro MPA, Cruz AJG, Badino AC. Temperature Influence in Real-Time Monitoring of Fed-Batch Ethanol Fermentation by Mid-Infrared Spectroscopy. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03717] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ivan I. K. Veloso
- Graduate Program of Chemical Engineering, Federal University of São Carlos, C.P. 676, São Carlos 13565-905, São Paulo, Brazil
| | - Kaio C. S. Rodrigues
- Graduate Program of Chemical Engineering, Federal University of São Carlos, C.P. 676, São Carlos 13565-905, São Paulo, Brazil
| | - Marcelo P. A. Ribeiro
- Graduate Program of Chemical Engineering, Federal University of São Carlos, C.P. 676, São Carlos 13565-905, São Paulo, Brazil
| | - Antonio J. G. Cruz
- Graduate Program of Chemical Engineering, Federal University of São Carlos, C.P. 676, São Carlos 13565-905, São Paulo, Brazil
| | - Alberto C. Badino
- Graduate Program of Chemical Engineering, Federal University of São Carlos, C.P. 676, São Carlos 13565-905, São Paulo, Brazil
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6
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Metcalfe GD, Smith TW, Hippler M. On-line analysis and in situ pH monitoring of mixed acid fermentation by Escherichia coli using combined FTIR and Raman techniques. Anal Bioanal Chem 2020; 412:7307-7319. [PMID: 32794006 PMCID: PMC7497492 DOI: 10.1007/s00216-020-02865-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/23/2020] [Accepted: 08/05/2020] [Indexed: 11/01/2022]
Abstract
We introduce an experimental setup allowing continuous monitoring of bacterial fermentation processes by simultaneous optical density (OD) measurements, long-path FTIR headspace monitoring of CO2, acetaldehyde and ethanol, and liquid Raman spectroscopy of acetate, formate, and phosphate anions, without sampling. We discuss which spectral features are best suited for detection, and how to obtain partial pressures and concentrations by integrations and least squares fitting of spectral features. Noise equivalent detection limits are about 2.6 mM for acetate and 3.6 mM for formate at 5 min integration time, improving to 0.75 mM for acetate and 1.0 mM for formate at 1 h integration. The analytical range extends to at least 1 M with a standard deviation of percentage error of about 8%. The measurement of the anions of the phosphate buffer allows the spectroscopic, in situ determination of the pH of the bacterial suspension via a modified Henderson-Hasselbalch equation in the 6-8 pH range with an accuracy better than 0.1. The 4 m White cell FTIR measurements provide noise equivalent detection limits of 0.21 μbar for acetaldehyde and 0.26 μbar for ethanol in the gas phase, corresponding to 3.2 μM acetaldehyde and 22 μM ethanol in solution, using Henry's law. The analytical dynamic range exceeds 1 mbar ethanol corresponding to 85 mM in solution. As an application example, the mixed acid fermentation of Escherichia coli is studied. The production of CO2, ethanol, acetaldehyde, acids such as formate and acetate, and the changes in pH are discussed in the context of the mixed acid fermentation pathways. Formate decomposition into CO2 and H2 is found to be governed by a zeroth-order kinetic rate law, showing that adding exogenous formate to a bioreactor with E. coli is expected to have no beneficial effect on the rate of formate decomposition and biohydrogen production.
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Affiliation(s)
- George D Metcalfe
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK
| | - Thomas W Smith
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK
- Water and Environmental Engineering Group, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, UK
| | - Michael Hippler
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK.
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7
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Jiang H, Xu W, Chen Q. High precision qualitative identification of yeast growth phases using molecular fusion spectra. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104211] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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8
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Patri AS, Mostofian B, Pu Y, Ciaffone N, Soliman M, Smith MD, Kumar R, Cheng X, Wyman CE, Tetard L, Ragauskas AJ, Smith JC, Petridis L, Cai CM. A Multifunctional Cosolvent Pair Reveals Molecular Principles of Biomass Deconstruction. J Am Chem Soc 2019; 141:12545-12557. [PMID: 31304747 DOI: 10.1021/jacs.8b10242] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The complex structure of plant cell walls resists chemical or biological degradation, challenging the breakdown of lignocellulosic biomass into renewable chemical precursors that could form the basis of future production of green chemicals and transportation fuels. Here, experimental and computational results reveal that the effect of the tetrahydrofuran (THF)-water cosolvents on the structure of lignin and on its interactions with cellulose in the cell wall drives multiple synergistic mechanisms leading to the efficient breakdown and fractionation of biomass into valuable chemical precursors. Molecular simulations show that THF-water is an excellent "theta" solvent, such that lignin dissociates from itself and from cellulose and expands to form a random coil. The expansion of the lignin molecules exposes interunit linkages, rendering them more susceptible to depolymerization by acid-catalyzed cleavage of aryl-ether bonds. Nanoscale infrared sensors confirm cosolvent-mediated molecular rearrangement of lignin in the cell wall of micrometer-thick hardwood slices and track the disappearance of lignin. At bulk scale, adding dilute acid to the cosolvent mixture liberates the majority of the hemicellulose and lignin from biomass, allowing unfettered access of cellulolytic enzymes to the remaining cellulose-rich material, allowing them to sustain high rates of hydrolysis to glucose without enzyme deactivation. Through this multiscale analysis, synergistic mechanisms for biomass deconstruction are identified, portending a paradigm shift toward first-principles design and evaluation of other cosolvent methods to realize low cost fuels and bioproducts.
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Affiliation(s)
- Abhishek S Patri
- Department of Chemical and Environmental Engineering, Bourns College of Engineering , University of California, Riverside , 900 University Avenue , Riverside , California 92521 , United States.,Center for Environmental Research and Technology, Bourns College of Engineering , University of California, Riverside , 1084 Columbia Avenue , Riverside , California 92507 , United States
| | | | | | - Nicholas Ciaffone
- NanoScience Technology Center and ¶Department of Physics , University of Central Florida , Orlando , Florida 32826 , United States
| | - Mikhael Soliman
- NanoScience Technology Center and ¶Department of Physics , University of Central Florida , Orlando , Florida 32826 , United States
| | | | - Rajeev Kumar
- Center for Environmental Research and Technology, Bourns College of Engineering , University of California, Riverside , 1084 Columbia Avenue , Riverside , California 92507 , United States
| | - Xiaolin Cheng
- College of Pharmacy , The Ohio State University , Columbus , Ohio 43210 , United States
| | - Charles E Wyman
- Department of Chemical and Environmental Engineering, Bourns College of Engineering , University of California, Riverside , 900 University Avenue , Riverside , California 92521 , United States.,Center for Environmental Research and Technology, Bourns College of Engineering , University of California, Riverside , 1084 Columbia Avenue , Riverside , California 92507 , United States
| | - Laurene Tetard
- NanoScience Technology Center and ¶Department of Physics , University of Central Florida , Orlando , Florida 32826 , United States
| | | | | | | | - Charles M Cai
- Department of Chemical and Environmental Engineering, Bourns College of Engineering , University of California, Riverside , 900 University Avenue , Riverside , California 92521 , United States.,Center for Environmental Research and Technology, Bourns College of Engineering , University of California, Riverside , 1084 Columbia Avenue , Riverside , California 92507 , United States
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9
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Hirsch E, Pataki H, Domján J, Farkas A, Vass P, Fehér C, Barta Z, Nagy ZK, Marosi GJ, Csontos I. Inline noninvasive Raman monitoring and feedback control of glucose concentration during ethanol fermentation. Biotechnol Prog 2019; 35:e2848. [DOI: 10.1002/btpr.2848] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/14/2019] [Accepted: 05/14/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Edit Hirsch
- Department of Organic Chemistry and TechnologyBudapest University of Technology and Economics Budapest Hungary
| | - Hajnalka Pataki
- Department of Organic Chemistry and TechnologyBudapest University of Technology and Economics Budapest Hungary
| | - Júlia Domján
- Department of Organic Chemistry and TechnologyBudapest University of Technology and Economics Budapest Hungary
| | - Attila Farkas
- Department of Organic Chemistry and TechnologyBudapest University of Technology and Economics Budapest Hungary
| | - Panna Vass
- Department of Organic Chemistry and TechnologyBudapest University of Technology and Economics Budapest Hungary
| | - Csaba Fehér
- Department of Applied Biotechnology and Food ScienceBudapest University of Technology and Economics Budapest Hungary
| | - Zsolt Barta
- Department of Applied Biotechnology and Food ScienceBudapest University of Technology and Economics Budapest Hungary
- Viresol Ltd. Visonta Hungary
| | - Zsombor K. Nagy
- Department of Organic Chemistry and TechnologyBudapest University of Technology and Economics Budapest Hungary
| | - György J. Marosi
- Department of Organic Chemistry and TechnologyBudapest University of Technology and Economics Budapest Hungary
| | - István Csontos
- Department of Organic Chemistry and TechnologyBudapest University of Technology and Economics Budapest Hungary
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10
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Mauerhofer LM, Pappenreiter P, Paulik C, Seifert AH, Bernacchi S, Rittmann SKMR. Methods for quantification of growth and productivity in anaerobic microbiology and biotechnology. Folia Microbiol (Praha) 2019; 64:321-360. [PMID: 30446943 PMCID: PMC6529396 DOI: 10.1007/s12223-018-0658-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 10/12/2018] [Indexed: 12/17/2022]
Abstract
Anaerobic microorganisms (anaerobes) possess a fascinating metabolic versatility. This characteristic makes anaerobes interesting candidates for physiological studies and utilizable as microbial cell factories. To investigate the physiological characteristics of an anaerobic microbial population, yield, productivity, specific growth rate, biomass production, substrate uptake, and product formation are regarded as essential variables. The determination of those variables in distinct cultivation systems may be achieved by using different techniques for sampling, measuring of growth, substrate uptake, and product formation kinetics. In this review, a comprehensive overview of methods is presented, and the applicability is discussed in the frame of anaerobic microbiology and biotechnology.
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Affiliation(s)
- Lisa-Maria Mauerhofer
- Archaea Physiology & Biotechnology Group, Archaea Biology and Ecogenomics Division, Department of Ecogenomics and Systems Biology, Universität Wien, Althanstraße 14, 1090, Wien, Austria
| | - Patricia Pappenreiter
- Institute for Chemical Technology of Organic Materials, Johannes Kepler University Linz, Linz, Austria
| | - Christian Paulik
- Institute for Chemical Technology of Organic Materials, Johannes Kepler University Linz, Linz, Austria
| | | | | | - Simon K-M R Rittmann
- Archaea Physiology & Biotechnology Group, Archaea Biology and Ecogenomics Division, Department of Ecogenomics and Systems Biology, Universität Wien, Althanstraße 14, 1090, Wien, Austria.
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11
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Bockisch A, Kielhorn E, Neubauer P, Junne S. Process analytical technologies to monitor the liquid phase of anaerobic cultures. Process Biochem 2019. [DOI: 10.1016/j.procbio.2018.10.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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12
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Colorimetric sensor array–smartphone–remote server coupling system for rapid detection of saccharides in beverages. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s13738-018-1306-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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On-line identification of fermentation processes for ethanol production. Bioprocess Biosyst Eng 2017; 40:989-1006. [PMID: 28391378 DOI: 10.1007/s00449-017-1762-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 03/18/2017] [Indexed: 10/19/2022]
Abstract
A strategy for monitoring fermentation processes, specifically, simultaneous saccharification and fermentation (SSF) of corn mash, was developed. The strategy covered the development and use of first principles, semimechanistic and unstructured process model based on major kinetic phenomena, along with mass and energy balances. The model was then used as a reference model within an identification procedure capable of running on-line. The on-line identification procedure consists on updating the reference model through the estimation of corrective parameters for certain reaction rates using the most recent process measurements. The strategy makes use of standard laboratory measurements for sugars quantification and in situ temperature and liquid level data. The model, along with the on-line identification procedure, has been tested against real industrial data and have been able to accurately predict the main variables of operational interest, i.e., state variables and its dynamics, and key process indicators. The results demonstrate that the strategy is capable of monitoring, in real time, this complex industrial biomass fermentation. This new tool provides a great support for decision-making and opens a new range of opportunities for industrial optimization.
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14
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Junne S, Kabisch J. Fueling the future with biomass: Processes and pathways for a sustainable supply of hydrocarbon fuels and biogas. Eng Life Sci 2016; 17:14-26. [PMID: 32624725 DOI: 10.1002/elsc.201600112] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 08/08/2016] [Accepted: 08/23/2016] [Indexed: 12/11/2022] Open
Abstract
Global economic growth, wealth and security rely upon the availability of cheap, mostly fossil-derived energy and chemical compounds. The replacement by sustainable resources is widely discussed. However, the current state of biotechnological processes usually restricts them to be used as a true alternative in terms of economic feasibility and even sustainability. Among the rare examples of bioprocesses applied for the energetic use of biomass are biogas and bioethanol production. Usually, these processes lack in efficiency and they cannot be operated without the support of legislation. Although they represent a first step towards a greater share of bio-based processes for energy provision, there is no doubt that tremendous improvements in strain and process development, feedstock and process flexibility as well as in the integration of these processes into broader supply and production networks, in this review called smart bioproduction grids, are required to make them economically attractive, robust enough, and wider acceptance by society. All this requires an interdisciplinary approach, which includes the use of residues in closed carbon cycles and issues concerning the process safety. This short review aims to depict some of the promising strategies to achieve an improved process performance as a basis for future application.
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Affiliation(s)
- Stefan Junne
- Department of Biotechnology Chair of Bioprocess Engineering Technische Universität Berlin Berlin Germany
| | - Johannes Kabisch
- Institute of Biochemistry Ernst-Moritz-Arndt University Greifswald Greifswald Germany
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15
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A Feasibility Study on the Evaluation of Quality Properties of Chinese Rice Wine Using Raman Spectroscopy. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0295-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Lupoi JS, Gjersing E, Davis MF. Evaluating lignocellulosic biomass, its derivatives, and downstream products with Raman spectroscopy. Front Bioeng Biotechnol 2015; 3:50. [PMID: 25941674 PMCID: PMC4403602 DOI: 10.3389/fbioe.2015.00050] [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: 02/17/2015] [Accepted: 03/27/2015] [Indexed: 11/13/2022] Open
Abstract
The creation of fuels, chemicals, and materials from plants can aid in replacing products fabricated from non-renewable energy sources. Before using biomass in downstream applications, it must be characterized to assess chemical traits, such as cellulose, lignin, or lignin monomer content, or the sugars released following an acid or enzymatic hydrolysis. The measurement of these traits allows researchers to gage the recalcitrance of the plants and develop efficient deconstruction strategies to maximize yields. Standard methods for assessing biomass phenotypes often have experimental protocols that limit their use for screening sizeable numbers of plant species. Raman spectroscopy, a non-destructive, non-invasive vibrational spectroscopy technique, is capable of providing qualitative, structural information and quantitative measurements. Applications of Raman spectroscopy have aided in alleviating the constraints of standard methods by coupling spectral data with multivariate analysis to construct models capable of predicting analytes. Hydrolysis and fermentation products, such as glucose and ethanol, can be quantified off-, at-, or on-line. Raman imaging has enabled researchers to develop a visual understanding of reactions, such as different pretreatment strategies, in real-time, while also providing integral chemical information. This review provides an overview of what Raman spectroscopy is, and how it has been applied to the analysis of whole lignocellulosic biomass, its derivatives, and downstream process monitoring.
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Affiliation(s)
- Jason S Lupoi
- Oak Ridge National Laboratory, BioEnergy Science Center , Oak Ridge, TN , USA ; National Renewable Energy Laboratory, National Bioenergy Center , Golden, CO , USA
| | - Erica Gjersing
- Oak Ridge National Laboratory, BioEnergy Science Center , Oak Ridge, TN , USA ; National Renewable Energy Laboratory, National Bioenergy Center , Golden, CO , USA
| | - Mark F Davis
- Oak Ridge National Laboratory, BioEnergy Science Center , Oak Ridge, TN , USA ; National Renewable Energy Laboratory, National Bioenergy Center , Golden, CO , USA
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Berry B, Moretto J, Matthews T, Smelko J, Wiltberger K. Cross-scale predictive modeling of CHO cell culture growth and metabolites using Raman spectroscopy and multivariate analysis. Biotechnol Prog 2014; 31:566-77. [DOI: 10.1002/btpr.2035] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 10/14/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Brandon Berry
- Cell Culture Development, Biogen Idec, Inc.; 14 Cambridge Center Cambridge MA 02142
| | - Justin Moretto
- Cell Culture Development, Biogen Idec, Inc.; 5000 Davis Drive Research Triangle Park NC 27709
| | - Thomas Matthews
- Cell Culture Development, Biogen Idec, Inc.; 5000 Davis Drive Research Triangle Park NC 27709
| | - John Smelko
- Cell Culture Development, Biogen Idec, Inc.; 5000 Davis Drive Research Triangle Park NC 27709
| | - Kelly Wiltberger
- Cell Culture Development, Biogen Idec, Inc.; 5000 Davis Drive Research Triangle Park NC 27709
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Iversen JA, Ahring BK. Monitoring lignocellulosic bioethanol production processes using Raman spectroscopy. BIORESOURCE TECHNOLOGY 2014; 172:112-120. [PMID: 25255187 DOI: 10.1016/j.biortech.2014.08.068] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Revised: 08/14/2014] [Accepted: 08/16/2014] [Indexed: 06/03/2023]
Abstract
Process control automation in the emerging biorefinery industry may be achieved by applying effective methods for monitoring compound concentrations during the production processes. This study examines the application of Raman spectroscopy with an excitation wavelength of 785nm and an immersion probe for in situ monitoring the progression of pretreatment, hydrolysis and fermentation processes in the production of lignocellulosic ethanol. Raman signals were attenuated by light scattering cells and lignocellulosic particulates, which the quantification method to some degree could correct for by using an internal standard in the spectra. Allowing particulates to settle by using a slow stirring speed further improved results, suggesting that Raman spectroscopy should be used in combination with continuous separation when used to monitor process mixtures with large amounts of particulates. The root mean square error of prediction (RMSE) of ethanol and glucose measured in real-time was determined to be 0.98g/L and 1.91g/L respectively.
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Affiliation(s)
- Jens A Iversen
- Section for Sustainable Biotechnology, Aalborg University, A.C. Meyers Vænge 15, 2450 Copenhagen SV, Denmark; Center for Bioproducts and Bioenergy, Washington State University Tri-Cities, 2710 Crimson Way, Richland, WA 99354, USA
| | - Birgitte K Ahring
- Section for Sustainable Biotechnology, Aalborg University, A.C. Meyers Vænge 15, 2450 Copenhagen SV, Denmark; Center for Bioproducts and Bioenergy, Washington State University Tri-Cities, 2710 Crimson Way, Richland, WA 99354, USA.
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Application of spectroscopic methods for monitoring of bioprocesses and the implications for the manufacture of biologics. ACTA ACUST UNITED AC 2014. [DOI: 10.4155/pbp.14.24] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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