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Parisis V, Tsave O, Papanikolaou C, Pantazopoulou E, Chatzidoukas C. Comprehensive Exploration of the Growth and Lipid Synthesis Phases of T. oleaginosus Cultures Implementing Design of Experiments and Response Surface Methodology. Bioengineering (Basel) 2023; 10:1359. [PMID: 38135950 PMCID: PMC10741121 DOI: 10.3390/bioengineering10121359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/24/2023] [Accepted: 11/22/2023] [Indexed: 12/24/2023] Open
Abstract
Trichosporon oleaginosus is an unconventional oleaginous yeast distinguished by its remarkable capacity to accumulate lipids in excess of 70% of its dry weight, particularly when cultivated in nitrogen-restricted conditions with ample carbon sources. A pivotal question that arises pertains to the nutrient dynamics in the culture medium, which give rise to both the excessive lipid content and corresponding lipid concentration. While previous research has predominantly focused on evaluating the impact of the initial carbon-to-nitrogen (C/N) ratio on lipid production, the precise critical thresholds of glucose and ammonium sulfate ((NH4)2SO4) at which growth and intracellular lipid production are either stimulated or impeded remain inadequately defined. This study employs an experimental design and response surface methodology to investigate the complex mechanism of lipid accumulation and its interaction with cellular growth. Application of the aforementioned methodologies resulted in the production of 10.6 g/L of microbial oil in batch cultures under conditions that correspond to a C/N ratio of 76. However, the primary objective is to generate knowledge to facilitate the development of efficient fed-batch cultivation strategies that optimize lipid production exclusively employing inorganic nitrogen sources by finely adjusting carbon and nitrogen levels. The intricate interaction between these levels is comprehensively addressed in the present study, while it is additionally revealed that as glucose levels rise within a non-inhibitory range, lipid-free biomass production decreases while lipid accumulation simultaneously increases. These findings set the stage for further exploration and the potential development of two-stage cultivation approaches, aiming to fully decouple growth and lipid production. This advancement holds the promise of bringing microbial oil production closer to commercial viability.
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Affiliation(s)
| | | | | | | | - Christos Chatzidoukas
- Department of Chemical Engineering, Aristotle University of Thessaloniki (AUTH), 54124 Thessaloniki, Greece; (V.P.); (O.T.); (C.P.); (E.P.)
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Migkos TM, Ioannidou G, Karapatsia A, Flevaris K, Chatzidoukas C. Enzymatic hydrolysis for the systematic production of second-generation glucose from the dual polysaccharide reserves of an anti-pollutant plant. Bioresour Technol 2021; 340:125711. [PMID: 34385124 DOI: 10.1016/j.biortech.2021.125711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
In this study, the anti-pollutant macrophyte Typha domingensis is exploited for the production of highly concentrated second-generation glucose. A two-stage starch and cellulose enzymatic hydrolysis process is compared for the first time with a single-stage simultaneous starch and cellulose hydrolysis approach, with the former achieving enhanced glucose production, making it more promising for large-scale deployment. The proposed two-stage process is optimized via the Box-Behnken response surface methodology achieving glucose yield values of 74.4% and 71.7% with respect to the starch and cellulose fraction, respectively. Elevated shaking rates are shown to exert a positive effect on both starch and cellulose enzymatic hydrolysis only under high initial substrate concentrations and high initial enzyme to substrate ratios, indicating the importance of accounting for the synergies between key process variables when aiming to increase glucose production. The findings of the presented experimental framework aspire to support future scale-up studies and techno-economic assessments.
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Affiliation(s)
- Theofanis-Matthaios Migkos
- Department of Chemical Engineering, Aristotle University of Thessaloniki (AUTH), P.O. Box: 472, Thessaloniki 54124, Greece
| | - Georgia Ioannidou
- Department of Chemical Engineering, Aristotle University of Thessaloniki (AUTH), P.O. Box: 472, Thessaloniki 54124, Greece
| | - Anna Karapatsia
- Department of Chemical Engineering, Aristotle University of Thessaloniki (AUTH), P.O. Box: 472, Thessaloniki 54124, Greece; Chemical Process & Energy Resources Institute (CPERI), Centre for Research and Technology Hellas (CERTH), P.O. Box: 60361, Thermi, Thessaloniki 57001, Greece
| | - Konstantinos Flevaris
- Department of Chemical Engineering, Aristotle University of Thessaloniki (AUTH), P.O. Box: 472, Thessaloniki 54124, Greece
| | - Christos Chatzidoukas
- Department of Chemical Engineering, Aristotle University of Thessaloniki (AUTH), P.O. Box: 472, Thessaloniki 54124, Greece.
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Papapostolou A, Karasavvas E, Chatzidoukas C. Oxygen mass transfer limitations set the performance boundaries of microbial PHA production processes – A model-based problem investigation supporting scale-up studies. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2019.04.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Penloglou G, Vasileiadou A, Chatzidoukas C, Kiparissides C. Model-based intensification of a fed-batch microbial process for the maximization of polyhydroxybutyrate (PHB) production rate. Bioprocess Biosyst Eng 2017; 40:1247-1260. [PMID: 28551856 DOI: 10.1007/s00449-017-1784-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 05/15/2017] [Indexed: 01/01/2023]
Abstract
An integrated metabolic-polymerization-macroscopic model, describing the microbial production of polyhydroxybutyrate (PHB) in Azohydromonas lata bacteria, was developed and validated using a comprehensive series of experimental measurements. The model accounted for biomass growth, biopolymer accumulation, carbon and nitrogen sources utilization, oxygen mass transfer and uptake rates and average molecular weights of the accumulated PHB, produced under batch and fed-batch cultivation conditions. Model predictions were in excellent agreement with experimental measurements. The validated model was subsequently utilized to calculate optimal operating conditions and feeding policies for maximizing PHB productivity for desired PHB molecular properties. More specifically, two optimal fed-batch strategies were calculated and experimentally tested: (1) a nitrogen-limited fed-batch policy and (2) a nitrogen sufficient one. The calculated optimal operating policies resulted in a maximum PHB content (94% g/g) in the cultivated bacteria and a biopolymer productivity of 4.2 g/(l h), respectively. Moreover, it was demonstrated that different PHB grades with weight average molecular weights of up to 1513 kg/mol could be produced via the optimal selection of bioprocess operating conditions.
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Affiliation(s)
- Giannis Penloglou
- Chemical Process and Energy Resources Institute (CPERI), Centre for Research and Technology Hellas (CERTH), 57001, Thermi, Thessaloniki, Greece
| | - Athina Vasileiadou
- Chemical Process and Energy Resources Institute (CPERI), Centre for Research and Technology Hellas (CERTH), 57001, Thermi, Thessaloniki, Greece.,Department of Chemical Engineering, Aristotle University of Thessaloniki (AUTH), 54124, Thessaloniki, Greece
| | - Christos Chatzidoukas
- Department of Chemical Engineering, Aristotle University of Thessaloniki (AUTH), 54124, Thessaloniki, Greece
| | - Costas Kiparissides
- Chemical Process and Energy Resources Institute (CPERI), Centre for Research and Technology Hellas (CERTH), 57001, Thermi, Thessaloniki, Greece. .,Department of Chemical Engineering, Aristotle University of Thessaloniki (AUTH), 54124, Thessaloniki, Greece.
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Chatzidoukas C, Kondylidis A, Meimaroglou D. Model-assisted operational design of bacterial PHA-production processes: the obstacle of heterogeneity inducing modules. Computer Aided Chemical Engineering 2017. [DOI: 10.1016/b978-0-444-63965-3.50483-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
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Penloglou G, Chatzidoukas C, Kiparissides C. A Microalgae-based Biorefinery Plant for the Production of Valuable Biochemicals: Design and Economics. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/b978-0-444-63428-3.50293-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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Chatzidoukas C, Penloglou G, Kiparissides C. Development of a structured dynamic model for the production of polyhydroxybutyrate (PHB) in Azohydromonas lata cultures. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2012.11.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Penloglou G, Roussos A, Chatzidoukas C, Kiparissides C. A combined metabolic/polymerization kinetic model on the microbial production of poly(3-hydroxybutyrate). N Biotechnol 2010; 27:358-67. [DOI: 10.1016/j.nbt.2010.02.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2009] [Revised: 12/07/2009] [Accepted: 02/02/2010] [Indexed: 11/27/2022]
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Penloglou G, Parouti S, Chatzidoukas C, Kiparissides C. Sensitivity of the fermentative poly-β-hydroxybutyrate (PHB) production by Alcaligenes latus against operating and environmental conditions. N Biotechnol 2009. [DOI: 10.1016/j.nbt.2009.06.987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chatzidoukas C, Pistikopoulos S, Kiparissides C. Macromol. React. Eng. 1/2009. MACROMOL REACT ENG 2009. [DOI: 10.1002/mren.200990000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Pladis P, Kanellopoulos V, Chatzidoukas C, Kiparissides C. Effect of Reaction Conditions and Catalyst Design on the Rheological Properties of Polyolefins Produced in Gas-Phase Olefin Polymerization Reactors. MACROMOL THEOR SIMUL 2008. [DOI: 10.1002/mats.200800047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Chatzidoukas C, Kanellopoulos V, Kiparissides C. On the Production of Polyolefins with Bimodal Molecular Weight and Copolymer Composition Distributions in Catalytic Gas-Phase Fluidized-Bed Reactors. MACROMOL THEOR SIMUL 2007. [DOI: 10.1002/mats.200700033] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Saliakas V, Chatzidoukas C, Krallis A, Meimaroglou D, Kiparissides C. Dynamic Optimization of Molecular Weight Distribution Using Orthogonal Collocation on Finite Elements and Fixed Pivot Methods: An Experimental and Theoretical Investigation. MACROMOL REACT ENG 2007. [DOI: 10.1002/mren.200600015] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Krallis A, Meimaroglou D, Saliakas V, Chatzidoukas C, Kiparissides C. Dynamic optimization of molecular weight distribution using orthogonal collocation on finite elements and fixed pivot methods: An experimental and theoretical investigation. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/s1570-7946(06)80232-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Chatzidoukas C, Kiparissides C, Srinivasan B, Bonvin D. OPTIMISATION OF GRADE TRANSITIONS IN AN INDUSTRIAL GAS-PHASE OLEFIN POLYMERIZATION FLUIDIZED BED REACTOR VIA NCO TRACKING. ACTA ACUST UNITED AC 2005. [DOI: 10.3182/20050703-6-cz-1902.01581] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Chatzidoukas C, Perkins J, Pistikopoulos E, Kiparissides C. Optimal grade transition and selection of closed-loop controllers in a gas-phase olefin polymerization fluidized bed reactor. Chem Eng Sci 2003. [DOI: 10.1016/s0009-2509(03)00223-9] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Chatzidoukas C, Pladis P, Kiparissides C. Mathematical Modeling of Dispersion Polymerization of Methyl Methacrylate in Supercritical Carbon Dioxide. Ind Eng Chem Res 2003. [DOI: 10.1021/ie020397a] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- C. Chatzidoukas
- Chemical Engineering Department and Chemical Process Engineering Research Institute, Aristotle University of Thessaloniki, P.O. Box 472, 54006 Thessaloniki, Greece
| | - P. Pladis
- Chemical Engineering Department and Chemical Process Engineering Research Institute, Aristotle University of Thessaloniki, P.O. Box 472, 54006 Thessaloniki, Greece
| | - C. Kiparissides
- Chemical Engineering Department and Chemical Process Engineering Research Institute, Aristotle University of Thessaloniki, P.O. Box 472, 54006 Thessaloniki, Greece
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