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Samhat K, Kazbar A, Takache H, Ismail A, Pruvost J. Influence of light absorption rate on the astaxanthin production by the microalga Haematococcus pluvialis during nitrogen starvation. BIORESOUR BIOPROCESS 2023; 10:78. [PMID: 38647902 PMCID: PMC10992552 DOI: 10.1186/s40643-023-00700-0] [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: 07/20/2023] [Accepted: 10/24/2023] [Indexed: 04/25/2024] Open
Abstract
Large amounts of astaxanthin (about 4% DW) can be produced under nitrogen starvation of Haematococcus pluvialis in photobioreactors (PBRs) exposed to high light conditions to induce a light stress. However, in PBR, the large biomass concentration usually achieved leads to strong light attenuation conditions, which makes complex the analysis of this "light stress". This study aims to elucidate the role of light transfer in astaxanthin cell content and productivity from the microalga Haematococcus pluvialis during nitrogen starvation. Haematococcus pluvialis was cultivated in a flat-panel PBR in a batch mode with sudden nitrogen starvation conditions and an incident photon flux density (PFD) of 250 µmolhν m-2 s-1. Different initial biomass concentrations ( C x 0 ) were evaluated, 0.21, 0.52, 1.39 and 2.21 kg m-3. As a result, spectral mass absorption cross-sections of Haematococcus pluvialis were measured at different times during nitrogen starvation, and were used to relate the mean rate of photon absorption (MRPA) to the astaxanthin productivity. A minimum initial MRPA of 7000 ± 500 µmolhν kgx-1 s-1 was found necessary to trigger large accumulation of astaxanthin in Haematococcus pluvialis cells (up to 3.21% DW) during nitrogen starvation conditions. The results also demonstrated the link between the MRPA and the daily astaxanthin productivity of Haematococcus pluvialis cultures, introducing then the MRPA as a physical quantity of interest for a rational optimization of the light culture conditions in PBRs.
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Affiliation(s)
- Khadija Samhat
- Oniris, CNRS, GEPEA, UMR 6144, Nantes University, 44600, Saint-Nazaire, France.
- Platform for Research and Analysis in Environmental Sciences, Doctoral School of Science and Technology, Lebanese University, Rafic Hariri Campus, Beirut, Lebanon.
| | - Antoinette Kazbar
- Algosource, 7 Rue Eugène Cornet, 44600, Saint-Nazaire, France
- Bioprocess Engineering, Wageningen University and Research, Wageningen, Netherlands
| | - Hosni Takache
- Bio-Information Research Laboratory (BIRL), The Higher Institute of Biotechnologies of Paris (Sup'biotech), 66 Rue Guy Môquet, 94800, Villejuif, France
| | - Ali Ismail
- Platform for Research and Analysis in Environmental Sciences, Doctoral School of Science and Technology, Lebanese University, Rafic Hariri Campus, Beirut, Lebanon
| | - Jeremy Pruvost
- Oniris, CNRS, GEPEA, UMR 6144, Nantes University, 44600, Saint-Nazaire, France
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Ibañez MV, Leonardi RJ, Krujatz F, Heinrich JM. The Assessment of the Real-Time Radiative Properties and Productivity of Limnospira platensis in Tubular Photobioreactors. LIFE (BASEL, SWITZERLAND) 2022; 12:life12071014. [PMID: 35888102 PMCID: PMC9320848 DOI: 10.3390/life12071014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/02/2022] [Accepted: 07/06/2022] [Indexed: 11/16/2022]
Abstract
The development of tools to predict the photobioreactors' (PBRs) productivity is a significant concern in biotechnology. To this end, it is required to know the light availability inside the cultivation unit and combine this information with a suitable kinetic expression that links the distribution of radiant energy with the cell growth rate. In a previous study, we presented and validated a methodology for assessing the radiative properties necessary to address the light distribution inside a PBR for varying illuminating conditions through the cultivation process of a phototrophic microorganism. Here, we sought to utilise this information to construct a predictive tool to estimate the productivity of an autotrophic bioprocess carried out in a 100 [L] tubular photobioreactor (TPBR). Firstly, the time-dependent optical properties over ten batch cultures of L. platensis were calculated. Secondly, the local volumetric rate of photon absorption was assessed based on a physical model of the interaction of the radiant energy with the suspended biomass, together with a Monte Carlo simulation algorithm. Lastly, a kinetic expression valid for low illumination conditions has been utilised to reproduce all the cultures' experimentally obtained dry weight biomass concentration values. Taken together, time-dependent radiative properties and the kinetic model produced a valuable tool for the study and scaling up of TPBRs.
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Affiliation(s)
- Manuel Vicente Ibañez
- Facultad de Bioquímica y Ciencias Biológicas (FBCB), Universidad Nacional del Litoral (UNL), Ciudad Universitaria (Paraje El Pozo), Santa Fe 3000, Argentina; (R.J.L.); (J.M.H.)
- Correspondence:
| | - Rodrigo Jorge Leonardi
- Facultad de Bioquímica y Ciencias Biológicas (FBCB), Universidad Nacional del Litoral (UNL), Ciudad Universitaria (Paraje El Pozo), Santa Fe 3000, Argentina; (R.J.L.); (J.M.H.)
| | - Felix Krujatz
- Institute of Natural Materials Technology, TU Dresden, Bergstraße 120, 01069 Dresden, Germany;
- Biotopa gGmbH—Center for Applied Aquaculture & Bioeconomy, Bautzner Landstraße 45, 01454 Radeberg, Germany
- Faculty of Natural and Environmental Sciences, University of Applied Sciences Zittau/Görlitz, 02763 Zittau, Germany
| | - Josué Miguel Heinrich
- Facultad de Bioquímica y Ciencias Biológicas (FBCB), Universidad Nacional del Litoral (UNL), Ciudad Universitaria (Paraje El Pozo), Santa Fe 3000, Argentina; (R.J.L.); (J.M.H.)
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Heredia V, Marchal L, Gonçalves O, Pruvost J. Optimization of continuous TAG production by Nannochloropsis gaditana in solar-nitrogen-limited culture. Biotechnol Bioeng 2022; 119:1808-1819. [PMID: 35377482 DOI: 10.1002/bit.28097] [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: 06/08/2021] [Revised: 03/22/2022] [Accepted: 03/25/2022] [Indexed: 11/08/2022]
Abstract
Nitrogen limitation and changing solar conditions are both known to affect triacylglycerol (TAG) production in microalgae. This work investigates the optimization of TAG production with a continuous nitrogen-limited culture of Nannochloropsis gaditana in simulated day-night cycles. The effect of day-night cycles was firstly investigated in nitrogen-deprived condition (i.e. batch culture), emphasizing a significant change in mechanical resistance of the strain during the night. The concept of Released TAG, which shows how much of the TAG produced is actually recovered in the downstream stages, i.e. after cell disruption, was shown here of interest. For a maximum released TAG, the optimum harvesting time was suggested as being 4 hours into the night period, which minimizes the losses due to a too great cell mechanical resistance. The protocol for continuous nitrogen-limited culture was then optimized, and a continuous nitrogen addition was compared to a pulsed-addition. For the latter, nitrogen was supplied in a single pulse at the beginning of the light periods, while the bulk medium was supplied separately at a slow but constant dilution rate of 0.005 h - 1 . The pulse dose was calculated after the study of nitrogen consumption and TAG production/consumption during the day-night cycles. The estimated released TAG for the pulsed-addition of 1.4 ⋅ 1 0 - 3 kg/m 2 ⋅ d was found significantly higher than the one achieved in batch culture (0.3 ⋅ 1 0 - 3 kg/m 2 ⋅ d) but lower than for continuous nitrogen addition which obtained the highest released TAG of 3 ⋅ 1 0 - 3 kg/m 2 ⋅ d. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Vladimir Heredia
- Université de Nantes, Oniris, GEPEA, UMR 6144 F-44600, Saint-Nazaire, France
| | - Luc Marchal
- Université de Nantes, Oniris, GEPEA, UMR 6144 F-44600, Saint-Nazaire, France
| | - Olivier Gonçalves
- Université de Nantes, Oniris, GEPEA, UMR 6144 F-44600, Saint-Nazaire, France
| | - Jeremy Pruvost
- Université de Nantes, Oniris, GEPEA, UMR 6144 F-44600, Saint-Nazaire, France
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Li X, Lin L, Xie B, Wu M, Ma L, Yang JY. Optical properties of biochemical compositions of microalgae within the spectral range from 300 to 1700 nm. APPLIED OPTICS 2021; 60:10232-10238. [PMID: 34807132 DOI: 10.1364/ao.439477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 10/14/2021] [Indexed: 06/13/2023]
Abstract
The optical properties of biochemical compositions of microalgae are vital for the improvement of biosensor design, photobioreactor design, biofuel, and biophotonics techniques. A combination method using both the double optical pathlength transmission method (DOPTM) and the ellipsometry method (EM) is called DOPTM-EM, and it is used to acquire the optical constants of protein, lipid, and carbohydrate of Haematococcus pluvialis, Nannochloropsis sp., and Spirulina in both a solid state and a solution state within the visible and near-infrared spectral range. For different types of microalgae, the refractive indices of protein and carbohydrate in the solid state are similar to each other, but show an observed difference from lipid in the solid state. The refractive indices of protein and carbohydrate in the solution state presents a visible distinction in the researched spectral range. The absorption indices of protein, lipid, and carbohydrate in the solid state for these three types of microalgae are close to each other in the spectral range of 300-500 nm. However, an observed difference is shown in the spectral range of 500-1700 nm. For ease of application, the refractive index of biochemical composition of microalgae was fitted based on the Sellmeier equation. We believe this work can provide a reference to obtain the optical properties of biomaterial with high accuracy.
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Chanquia SN, Vernet G, Kara S. Photobioreactors for cultivation and synthesis: Specifications, challenges, and perspectives. Eng Life Sci 2021; 22:712-724. [PMID: 36514531 PMCID: PMC9731602 DOI: 10.1002/elsc.202100070] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 09/06/2021] [Accepted: 09/10/2021] [Indexed: 12/16/2022] Open
Abstract
Due to their versatility and the high biomass yield produced, cultivation of phototrophic organisms is an increasingly important field. In general, open ponds are chosen to do it because of economic reasons; however, this strategy has several drawbacks such as poor control of culture conditions and a considerable risk of contamination. On the other hand, photobioreactors are an attractive choice to perform cultivation of phototrophic organisms, many times in a large scale and an efficient way. Furthermore, photobioreactors are being increasingly used in bioprocesses to obtain valuable chemical products. In this review, we briefly describe different photobioreactor set-ups, including some of the recent designs, and their characteristics. Additionally, we discuss the current challenges and advantages that each different type of photobioreactor presents, their applicability in biocatalysis and some modern modeling tools that can be applied to further enhance a certain process.
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Affiliation(s)
- Santiago N. Chanquia
- Biocatalysis and Bioprocessing GroupDepartment of Biological and Chemical EngineeringAarhus UniversityAarhusDenmark
| | - Guillem Vernet
- Biocatalysis and Bioprocessing GroupDepartment of Biological and Chemical EngineeringAarhus UniversityAarhusDenmark
| | - Selin Kara
- Biocatalysis and Bioprocessing GroupDepartment of Biological and Chemical EngineeringAarhus UniversityAarhusDenmark
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Xi Y, Xue S, Cao X, Chi Z, Wang J. Quantitative analysis on photon numbers received per cell for triggering β-carotene accumulation in Dunaliella salina. BIORESOUR BIOPROCESS 2021; 8:104. [PMID: 38650246 PMCID: PMC10992135 DOI: 10.1186/s40643-021-00457-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 10/10/2021] [Indexed: 11/10/2022] Open
Abstract
Accumulation of β-carotene in Dunaliella salina is highly dependent on light exposure intensity and duration, but quantitative analysis on photon numbers received per cell for triggering β-carotene accumulation is not available so far. In this study, experiment results showed that significant β-carotene accumulation occurred after at least 8 h illumination at 400 µmol photons·m-2·s-1. To quantify the average number of photons received per cell, correlations of light attenuation with light path, biomass concentration, and β-carotene content were, respectively, established using both Lambert-Beer and Cornet models, and the latter provided better simulation. Using Cornet model, average number of photons received per cell (APRPC) was calculated and proposed as a parameter for β-carotene accumulation, and constant APRPC was maintained by adjusting average irradiance based on cell concentration and carotenoids content changes during the whole induction period. It was found that once APRPC reached 0.7 µmol photons cell-1, β-carotene accumulation was triggered, and it was saturated at 9.9 µmol photons cell-1. This study showed that APRPC can be used as an important parameter to precisely simulate and control β-carotene production by D. salina.
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Affiliation(s)
- Yimei Xi
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
- School of Bioengineering, Dalian University of Technology, Dalian, 116024, China
| | - Song Xue
- School of Bioengineering, Dalian University of Technology, Dalian, 116024, China
| | - Xupeng Cao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 16023, China
| | - Zhanyou Chi
- School of Bioengineering, Dalian University of Technology, Dalian, 116024, China.
| | - Jinghan Wang
- School of Bioengineering, Dalian University of Technology, Dalian, 116024, China.
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Busnel A, Samhat K, Gérard E, Kazbar A, Marec H, Dechandol E, Le Gouic B, Hauser JL, Pruvost J. Development and validation of a screening system for characterizing and modeling biomass production from cyanobacteria and microalgae: Application to Arthrospira platensis and Haematococcus pluvialis. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102386] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Optimization of the growth and marennine production by the diatom Haslea ostrearia in photobioreactor. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102251] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Producing Energy-Rich Microalgae Biomass for Liquid Biofuels: Influence of Strain Selection and Culture Conditions. ENERGIES 2021. [DOI: 10.3390/en14051246] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Energy-storage metabolites such as neutral lipids and carbohydrates are valuable compounds for liquid biofuel production. The aim of this work is to elucidate the main biological responses of two algae species known for their effective energy-rich compound accumulation in nitrogen limitation and day–night cycles: Nannochloropsis gaditana, a seawater species, and Parachlorella kessleri, a freshwater species. Lipid and carbohydrate production are investigated, as well as cell resistance to mechanical disruption for energy-rich compound release. Nitrogen-depleted N. gaditana showed only a low consumption of energy-storage molecules with a non-significant preference for neutral lipids (TAG) and carbohydrates in day–night cycles. However, it did accumulate significantly fewer carbohydrates than P. kessleri. Following this, the highest levels of productivity for N. gaditana in chemostat cultures at four levels of nitrogen limitation were found to be 3.4 and 2.2 × 10−3 kg/m2·d for carbohydrates and TAG, respectively, at 56%NO3 limitation. The cell disruption rate of N. gaditana decreased along with nitrogen limitation, from 75% (at 200%NO3) to 17% (at 13%NO3). In the context of potentially recoverable energy for biofuels, P. kessleri showed good potential for biodiesel and high potential for bioethanol; by contrast, N. gaditana was found to be more efficient for biodiesel production only.
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10
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Legrand J, Artu A, Pruvost J. A review on photobioreactor design and modelling for microalgae production. REACT CHEM ENG 2021. [DOI: 10.1039/d0re00450b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
From the cell to the photobioreactor and to the industrial exploitation of microalgae, through the controlled experiments and modelling.
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Affiliation(s)
- Jack Legrand
- University of Nantes
- CNRS, ONIRIS, GEPEA, UMR6144
- 44602 Saint-Nazaire Cedex
- France
| | - Arnaud Artu
- Total, Direction générale Raffinage-Chimie
- Division Biofuels
- Tour Coupole
- 92078 Paris La Défense
- France
| | - Jérémy Pruvost
- University of Nantes
- CNRS, ONIRIS, GEPEA, UMR6144
- 44602 Saint-Nazaire Cedex
- France
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11
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Hoeniges J, Kandilian R, Zhang C, Pruvost J, Legrand J, Grizeau D, Pilon L. Effect of colony formation on light absorption by Botryococcus braunii. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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12
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Ibañez MV, Leonardi RJ, Heinrich JM, Steingroewer J, Walther T, Felix K. A rapid assessment of the radiative properties from a suspension of Chromochloris zofingiensis. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2020. [DOI: 10.1016/j.jpap.2020.100007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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13
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Weise T, Grewe C, Pfaff M. Experimental and Model-Based Analysis to Optimize Microalgal Biomass Productivity in a Pilot-Scale Tubular Photobioreactor. Front Bioeng Biotechnol 2020; 8:453. [PMID: 32528939 PMCID: PMC7247861 DOI: 10.3389/fbioe.2020.00453] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 04/20/2020] [Indexed: 11/13/2022] Open
Abstract
A dynamic coarse-grained model of microalgal growth considering light availability and temperature under discontinuous bioprocess operation was parameterized using experimental data from 15 batch cultivations of Nannochloropsis granulata in a pilot-scale tubular photobioreactor. The methodology applied consists of a consecutive two-step model parameter estimation using pooled, clustered and reorganized data to obtain initial estimates and multi-experiment fitting to obtain the final estimates, which are: maximum specific growth rate μmax = 1.56 d−1, specific photon half-saturation constant KS,ph = 1.89 molphgX-1d-1, specific photon maintenance coefficient mph = 0.346 molphgX-1d-1 and the cardinal temperatures Tmin = 2.3°C, Topt = 27.93°C and Tmax = 32.59°C. Biomass productivity prediction proved highly accurate, expressed by the mean absolute percent error MAPE = 7.2%. Model-based numerical optimization of biomass productivity for repeated discontinuous operation with respect to the process parameters cultivation cycle time, inoculation biomass concentration and temperature yielded productivity gains of up to 35%. This optimization points to best performance under continuous operation. The approach successfully applied here to small pilot-scale confirms an earlier one to lab-scale, indicating its transferability to larger scale tubular photobioreactors.
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Affiliation(s)
- Tobias Weise
- Department of Medical Engineering and Biotechnology, University of Applied Sciences Jena, Jena, Germany.,Department of Bioinformatics, Friedrich Schiller University Jena, Jena, Germany.,BioControl Jena GmbH, Jena, Germany
| | | | - Michael Pfaff
- Department of Medical Engineering and Biotechnology, University of Applied Sciences Jena, Jena, Germany
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Gojkovic Z, Lu Y, Ferro L, Toffolo A, Funk C. Modeling biomass production during progressive nitrogen starvation by North Swedish green microalgae. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101835] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Nghiem Xuan R, Safitri I, Mouget J, Pruvost J, Turpin V, Jaouen P. Design of an artificial culture medium to optimize Haslea ostrearia biomass and marennine production. ALGAL RES 2020. [DOI: 10.1016/j.algal.2019.101653] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Rebolledo-Oyarce J, Mejía-López J, García G, Rodríguez-Córdova L, Sáez-Navarrete C. Novel photobioreactor design for the culture of Dunaliella tertiolecta - Impact of color in the growth of microalgae. BIORESOURCE TECHNOLOGY 2019; 289:121645. [PMID: 31234071 DOI: 10.1016/j.biortech.2019.121645] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 06/09/2023]
Abstract
Microalgae are affected by the amount of light received. This parameter can be controlled by changing the light source and altering the reactor used for their growth. In this study, the effect of different colors of light was analyzed in the growth of Dunaliella tertiolecta, observing that blue lighting systems reached a biomass 10 times superior to the one generated by orange lightning systems. This growth effect was seen in a novel tubular internally illuminated photobioreactor. In this photobioreactor, the blue reactor produced 1.7 times the biomass of the red reactor, with the particularity that the latter showed an oscillating behavior in its growth. From irradiance models, the light dispersion coefficient is higher than the absorption coefficient when using red light. In contrast, with blue light, the value of the scattering coefficient is almost null.
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Affiliation(s)
- José Rebolledo-Oyarce
- Departamento de Ingeniería Química y Bioprocesos, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago, Chile.
| | - José Mejía-López
- Facultad de Física, Pontificia Universidad Católica de Chile, Casilla 306, Santiago, Chile; Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, Facultad de Física, Pontificia Universidad Católica de Chile, Santiago, Chile; Centro para el Desarrollo de la Nanociencia y la Nanotecnología, CEDENNA, Santiago, Chile
| | - Griselda García
- Facultad de Física, Pontificia Universidad Católica de Chile, Casilla 306, Santiago, Chile; Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, Facultad de Física, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Leonardo Rodríguez-Córdova
- Departamento de Ingeniería Química y Bioprocesos, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago, Chile
| | - César Sáez-Navarrete
- Departamento de Ingeniería Química y Bioprocesos, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago, Chile; Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, Facultad de Física, Pontificia Universidad Católica de Chile, Santiago, Chile; UC Energy Research Center (CE-UC), Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago, Chile
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17
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Effect of light absorption rate and nitrate concentration on TAG accumulation and productivity of Parachlorella kessleri cultures grown in chemostat mode. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101442] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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18
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Yoshitake Y, Ohta H, Shimojima M. Autophagy-Mediated Regulation of Lipid Metabolism and Its Impact on the Growth in Algae and Seed Plants. FRONTIERS IN PLANT SCIENCE 2019; 10:709. [PMID: 31214225 PMCID: PMC6558177 DOI: 10.3389/fpls.2019.00709] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 05/13/2019] [Indexed: 05/08/2023]
Abstract
Under nutrient starvation conditions, algae and seed-plant cells accumulate carbon metabolites such as storage lipids, triacylglycerols (TAGs), and starches. Recent research has suggested the involvement of autophagy in the regulation of carbon metabolites under nutrient starvation. When algae are grown under carbon starvation conditions, such as growth in darkness or in the presence of a photosynthesis inhibitor, lipid droplets are surrounded by phagophores. Indeed, the amount of TAGs in an autophagy-deficient mutant has been found to be greater than that in wild type under nitrogen starvation, and cerulenin, which is one of the inhibitors of fatty acid synthesis, induces autophagy. In land plants, TAGs accumulate predominantly in seeds and etiolated seedlings. These TAGs are degraded in peroxisomes via β-oxidation during germination as a source of carbon for growth without photosynthesis. A global analysis of the role of autophagy in Arabidopsis seedlings under carbon starvation revealed that a lack of autophagy enhances the accumulation of TAGs and fatty acids. In Oryza sativa, autophagy-mediated degradation of TAGs and diacylglycerols has been suggested to be important for pollen development. In this review, we introduce and summarize research findings demonstrating that autophagy affects lipid metabolism and discuss the role of autophagy in membrane and storage-lipid homeostasis, each of which affects the growth and development of seed plants and algae.
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Affiliation(s)
- Yushi Yoshitake
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Hiroyuki Ohta
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
- Open Innovation Platform with Enterprises, Research Institute and Academia (OPERA), Japan Science and Technology Agency, Chiyoda, Japan
| | - Mie Shimojima
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
- *Correspondence: Mie Shimojima,
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Janssen JH, Driessen JL, Lamers PP, Wijffels RH, Barbosa MJ. Effect of initial biomass-specific photon supply rate on fatty acid accumulation in nitrogen depleted Nannochloropsis gaditana under simulated outdoor light conditions. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.10.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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20
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New ultra-flat photobioreactor for intensive microalgal production: The effect of light irradiance. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.07.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ndiaye M, Gadoin E, Gentric C. CO 2 gas–liquid mass transfer and k L a estimation: Numerical investigation in the context of airlift photobioreactor scale-up. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2018.03.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Luo Y, Le-Clech P, Henderson RK. Simultaneous microalgae cultivation and wastewater treatment in submerged membrane photobioreactors: A review. ALGAL RES 2017. [DOI: 10.1016/j.algal.2016.10.026] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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23
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Reflection-refraction effects on light distribution inside tubular photobioreactors. CAN J CHEM ENG 2017. [DOI: 10.1002/cjce.22811] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Liu G, Miao X. Switching cultivation for enhancing biomass and lipid production with extracellular polymeric substance as co-products in Heynigia riparia SX01. BIORESOURCE TECHNOLOGY 2017; 227:214-220. [PMID: 28038398 DOI: 10.1016/j.biortech.2016.12.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 12/09/2016] [Accepted: 12/10/2016] [Indexed: 06/06/2023]
Abstract
Switching cultivation (mixotrophic-heterotrophic, 12h:12h) of Heynigia riparia SX01 was studied, the maximum biomass concentration of 3.55gL-1 and lipid yield of 1.45gL-1 were achieved after 8days cultivation. The extracellular polymeric substance (EPS) was developed as co-product. Addition of MgSO4 could enhance the production of EPS. The highest amount of 0.60gL-1 EPS was obtained with the addition of 2gL-1 MgSO4, the self-flocculation efficiency was as high as 83% at this condition. The total lipid and lipid fractions did not show differences with extra MgSO4. Based on the above results, a new biodiesel production model was proposed: culturing Heynigia riparia SX01 with extra 2gL-1 MgSO4 by switching cultivation and using self flocculation to collect microalgae for biodiesel production, while EPS was collected as valuable co-products.
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Affiliation(s)
- Guodong Liu
- State Key Laboratory of Microbial Metabolism and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China; Biomass Energy Research Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaoling Miao
- State Key Laboratory of Microbial Metabolism and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China; Biomass Energy Research Center, Shanghai Jiao Tong University, Shanghai 200240, China.
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25
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Using resonant ultrasound field-incorporated dynamic photobioreactor system to enhance medium replacement process for concentrated microalgae cultivation in continuous mode. Chem Eng Res Des 2017. [DOI: 10.1016/j.cherd.2016.12.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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26
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Wet lipid extraction from the microalga Nannochloropsis sp.: Disruption, physiological effects and solvent screening. ALGAL RES 2017. [DOI: 10.1016/j.algal.2016.11.005] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Pruvost J, Le Borgne F, Artu A, Legrand J. Development of a thin-film solar photobioreactor with high biomass volumetric productivity (AlgoFilm©) based on process intensification principles. ALGAL RES 2017. [DOI: 10.1016/j.algal.2016.10.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Taleb A, Kandilian R, Touchard R, Montalescot V, Rinaldi T, Taha S, Takache H, Marchal L, Legrand J, Pruvost J. Screening of freshwater and seawater microalgae strains in fully controlled photobioreactors for biodiesel production. BIORESOURCE TECHNOLOGY 2016; 218:480-90. [PMID: 27394994 DOI: 10.1016/j.biortech.2016.06.086] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/21/2016] [Accepted: 06/22/2016] [Indexed: 05/18/2023]
Abstract
Strain selection is one of the primary hurdles facing cost-effective microalgal biodiesel production. Indeed, the strain used affects both upstream and downstream biodiesel production processes. This study presents a screening procedure that considers the most significant criteria in microalgal biodiesel production including TAG production and wet extraction and recovery of TAGs. Fourteen freshwater and seawater strains were investigated. Large variation was observed between the strains in all the screening criteria. The overall screening procedure ultimately led to the identification of Parachlorella kessleri UTEX2229 and Nannochloropsis gaditana CCMP527 as the best freshwater and seawater strains, respectively. They featured the largest areal TAG productivity equal to 2.7×10(-3) and 2.3×10(-3)kgm(-2)d(-1), respectively. These two strains also displayed encouraging cell fragility in a high pressure bead milling process with 69% and 98% cell disruption at 1750bar making them remarkable strains for TAG extraction in wet environment.
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Affiliation(s)
- A Taleb
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France; AZM Center for Biotechnology Research and Its Applications, Laboratory of Applied Biotechnology, Lebanese University, EDST, Tripoli, Lebanon; Department of Food Science and Technology, Faculty of Agricultural and Veterinary Medicine, Lebanese University, Dekweneh, Beirut, Lebanon
| | - R Kandilian
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - R Touchard
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - V Montalescot
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - T Rinaldi
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - S Taha
- AZM Center for Biotechnology Research and Its Applications, Laboratory of Applied Biotechnology, Lebanese University, EDST, Tripoli, Lebanon
| | - H Takache
- Department of Food Science and Technology, Faculty of Agricultural and Veterinary Medicine, Lebanese University, Dekweneh, Beirut, Lebanon
| | - L Marchal
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - J Legrand
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - J Pruvost
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France.
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Bhowmik A, Pilon L. Can spherical eukaryotic microalgae cells be treated as optically homogeneous? JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2016; 33:1495-1503. [PMID: 27505647 DOI: 10.1364/josaa.33.001495] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This study aims to answer the question of whether spherical unicellular photoautotrophic eukaryotic microalgae cells, consisting of various intracellular compartments with their respective optical properties, can be modeled as homogeneous spheres with some effective complex index of refraction. The spectral radiation characteristics in the photosynthetically active region of a spherical heterogeneous microalgae cell, representative of Chlamydomonas reinhardtii and consisting of spherical compartments corresponding to the cell wall, cytoplasm, chloroplast, nucleus, and mitochondria, were estimated using the superposition T-matrix method. The effects of the presence of intracellular lipids and/or starch accumulation caused by stresses, such as nitrogen limitation, were explored. Predictions by the T-matrix method were qualitatively and quantitatively consistent with experimental measurements for various microalgae species. The volume-equivalent homogeneous sphere approximation with volume-averaged effective complex index of refraction gave accurate estimates of the spectral (i) absorption and (ii) scattering cross sections of the heterogeneous cells under both nitrogen-replete and nitrogen-limited conditions. In addition, the effect of a strongly refracting cell wall, representative of Chlorella vulgaris, was investigated. In this case, for the purpose of predicting their integral radiation characteristics, the microalgae should be represented as a coated sphere with a coating corresponding to the cell wall and a homogeneous core with volume-averaged complex index of refraction for the rest of the cell. However, both homogeneous sphere and coated sphere approximations predicted strong resonances in the scattering phase function and spectral backscattering cross section that were not observed in that of the heterogeneous cells.
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30
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Kandilian R, Soulies A, Pruvost J, Rousseau B, Legrand J, Pilon L. Simple method for measuring the spectral absorption cross-section of microalgae. Chem Eng Sci 2016. [DOI: 10.1016/j.ces.2016.02.039] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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31
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Souliès A, Legrand J, Marec H, Pruvost J, Castelain C, Burghelea T, Cornet JF. Investigation and modeling of the effects of light spectrum and incident angle on the growth ofChlorella vulgarisin photobioreactors. Biotechnol Prog 2016; 32:247-61. [DOI: 10.1002/btpr.2244] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 12/23/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Antoine Souliès
- CNRS, Laboratoire de Génie des Procédés - Environnement - Agroalimentaire; Université De Nantes, UMR 6144; 37 Boulevard De L'université, BP 406 Saint-Nazaire Cedex 44602 France
| | - Jack Legrand
- CNRS, Laboratoire de Génie des Procédés - Environnement - Agroalimentaire; Université De Nantes, UMR 6144; 37 Boulevard De L'université, BP 406 Saint-Nazaire Cedex 44602 France
| | - Hélène Marec
- CNRS, Laboratoire de Génie des Procédés - Environnement - Agroalimentaire; Université De Nantes, UMR 6144; 37 Boulevard De L'université, BP 406 Saint-Nazaire Cedex 44602 France
| | - Jérémy Pruvost
- CNRS, Laboratoire de Génie des Procédés - Environnement - Agroalimentaire; Université De Nantes, UMR 6144; 37 Boulevard De L'université, BP 406 Saint-Nazaire Cedex 44602 France
| | - Cathy Castelain
- CNRS, Laboratoire de Thermocinétique de Nantes; Université De Nantes, UMR 6607; La Chantrerie, Rue Christian-Pauc, BP 50609 Nantes Cedex 3 44306 France
| | - Teodor Burghelea
- CNRS, Laboratoire de Thermocinétique de Nantes; Université De Nantes, UMR 6607; La Chantrerie, Rue Christian-Pauc, BP 50609 Nantes Cedex 3 44306 France
| | - Jean-François Cornet
- Université Clermont Auvergne, Sigma-Clermont; Institut Pascal; UMR CNRS 6602 BP 10448 F63000 Clermont-Ferrand France
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32
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Cheng J, Lu H, Huang Y, Li K, Huang R, Zhou J, Cen K. Enhancing growth rate and lipid yield of Chlorella with nuclear irradiation under high salt and CO2 stress. BIORESOURCE TECHNOLOGY 2016; 203:220-227. [PMID: 26724554 DOI: 10.1016/j.biortech.2015.12.032] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 12/11/2015] [Accepted: 12/13/2015] [Indexed: 06/05/2023]
Abstract
In order to produce biodiesel from microalgae cultured with abundant seawater, Chlorella sp. was mutated with (137)Se-γ ray irradiation and domesticated with f/2 seawater culture medium (salinity=3 wt.%) under 15 vol.% CO2 stress. Biomass yield of the mutant increased by 25% compared with wild species and lipid content increased to 54.9%. When nitrogen and phosphorus concentrations in the initial substrate increased, the increased propagation speed of the mutant resulted in decreased cell diameter by 26.6% and decreased cell wall thickness by 69.7%. The dramatically increased biomass yield of the mutant with sufficient initial substrate and relative nitrogen starvation in the later growth period with continuous 15 vol.% CO2 led to an increased lipid yield of 1.0 g/L. The long-chain unsaturated fatty acids increased, whereas short-chain saturated fatty acids decreased.
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Affiliation(s)
- Jun Cheng
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.
| | - Hongxiang Lu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Yun Huang
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Ke Li
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Rui Huang
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Junhu Zhou
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Kefa Cen
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
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33
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Pruvost J, Le Borgne F, Artu A, Cornet JF, Legrand J. Industrial Photobioreactors and Scale-Up Concepts. PHOTOBIOREACTION ENGINEERING 2016. [DOI: 10.1016/bs.ache.2015.11.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Benvenuti G, Lamers PP, Breuer G, Bosma R, Cerar A, Wijffels RH, Barbosa MJ. Microalgal TAG production strategies: why batch beats repeated-batch. BIOTECHNOLOGY FOR BIOFUELS 2016; 9:64. [PMID: 26985237 PMCID: PMC4793540 DOI: 10.1186/s13068-016-0475-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 03/02/2016] [Indexed: 05/09/2023]
Abstract
BACKGROUND For a commercially feasible microalgal triglyceride (TAG) production, high TAG productivities are required. The operational strategy affects TAG productivity but a systematic comparison between different strategies is lacking. For this, physiological responses of Nannochloropsis sp. to nitrogen (N) starvation and N-rich medium replenishment were studied in lab-scale batch and repeated-batch (part of the culture is periodically harvested and N-rich medium is re-supplied) cultivations under continuous light, and condensed into a mechanistic model. RESULTS The model, which successfully described both strategies, was used to identify potential improvements for both batch and repeated-batch and compare the two strategies on optimized TAG yields on light (amount of TAGs produced per mol of supplied PAR photons). TAG yields on light, for batch, from 0.12 (base case at high light) to 0.49 g molph (-1) (at low light and with improved strain) and, for repeated-batch, from 0.07 (base case at high light) to 0.39 g molph (-1) (at low light with improved strain and optimized repeated-batch settings). The base case yields are in line with the yields observed in current state-of-the-art outdoor TAG production. CONCLUSIONS For continuous light, an optimized batch process will always result in higher TAG yield on light compared to an optimized repeated-batch process. This is mainly because repeated-batch cycles start with N-starved cells. Their reduced photosynthetic capacity leads to inefficient light use during the regrowth phase which results in lower overall TAG yields compared to a batch process.
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Affiliation(s)
- Giulia Benvenuti
- />Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands
| | - Packo P. Lamers
- />Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands
| | - Guido Breuer
- />Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands
| | - Rouke Bosma
- />Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands
| | - Ana Cerar
- />Microbiology, Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, 1000 Ljubljana, Slovenia
| | - René H. Wijffels
- />Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands
- />Biosciences and Aquaculture, Nordland University, 8049 Bodø, Norway
| | - Maria J. Barbosa
- />Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands
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Breuer G, Lamers PP, Janssen M, Wijffels RH, Martens DE. Opportunities to improve the areal oil productivity of microalgae. BIORESOURCE TECHNOLOGY 2015; 186:294-302. [PMID: 25836038 DOI: 10.1016/j.biortech.2015.03.085] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 03/16/2015] [Accepted: 03/19/2015] [Indexed: 05/24/2023]
Abstract
Microalgae are often considered as a promising alternative source of vegetable oils. These oils can be used for food and biofuel applications. Productivities that are projected for large-scale microalgal oil production are, however, often poorly supported by scientific evidence and based on too optimistic assumptions. To facilitate the inclusion of the microalgal physiology in these projections, existing knowledge and novel scientific insights were condensed into a mechanistic model that describes photosynthesis and carbon partitioning during nitrogen starvation. The model is validated using experimental data from both wild-type and a starchless mutant of Scenedesmus obliquus. The model is subsequently used to quantify how reactor design, process design, and strain improvement can improve the oil productivity from 2.1 to up to 10.9 g m(-2) day(-1). These projected productivities are used to reflect on commonly assumed oil productivities and it is concluded that the microalgal oil productivity is often overestimated several folds.
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Affiliation(s)
- Guido Breuer
- Bioprocess Engineering & AlgaePARC, Wageningen University and Research Centre, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands.
| | - Packo P Lamers
- Bioprocess Engineering & AlgaePARC, Wageningen University and Research Centre, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
| | - Marcel Janssen
- Bioprocess Engineering & AlgaePARC, Wageningen University and Research Centre, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
| | - René H Wijffels
- Bioprocess Engineering & AlgaePARC, Wageningen University and Research Centre, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands; Faculty Biosciences and Aquaculture, University of Nordland, N-8049 Bodø, Norway
| | - Dirk E Martens
- Bioprocess Engineering & AlgaePARC, Wageningen University and Research Centre, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
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Taleb A, Pruvost J, Legrand J, Marec H, Le-Gouic B, Mirabella B, Legeret B, Bouvet S, Peltier G, Li-Beisson Y, Taha S, Takache H. Development and validation of a screening procedure of microalgae for biodiesel production: application to the genus of marine microalgae Nannochloropsis. BIORESOURCE TECHNOLOGY 2015; 177:224-32. [PMID: 25496942 DOI: 10.1016/j.biortech.2014.11.068] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 11/14/2014] [Accepted: 11/15/2014] [Indexed: 05/21/2023]
Abstract
Nannochloropsis has emerged as a promising alga for biodiesel production. However, the genus consists of 6 species and hundreds of strains making strain selection a challenge. Furthermore, oil productivity is instrumental to economic viability of any algal strain for industrial production, which is dependent on growth rate and oil content. In most cases, these two parameters have been studied independently. Thus, the goal of this study is to provide a combined method for evaluating strain performance in specially designed photobioreactors together with an in-depth lipidomic analyses. The nine strains of Nannochloropsis tested showed considerable variations in productivity and lipidomics highlighting the importance of strain selection. Finally, Nannochloropsis gaditana CCMP527 and Nannochloropsis salina CCMP537 emerged as the two most promising strains, with an oil content of 37 and 27 dry wt% after 11-day nitrogen starvation, respectively, resulting in TAG productivity of 13×10(-3) and 18×10(-3) kg m(-3) d(-1), respectively.
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Affiliation(s)
- A Taleb
- GEPEA, Université de Nantes, CNRS, UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France; Department of Food Science and Technology, Faculty of Agricultural and Veterinary Medicine, Lebanese University, Dekwaneh, Beirut, Lebanon; AZM Center for Biotechnology Research and its Applications, Laboratory of Applied Biotechnology, Lebanese University, EDST, Tripoli, Lebanon
| | - J Pruvost
- GEPEA, Université de Nantes, CNRS, UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France.
| | - J Legrand
- GEPEA, Université de Nantes, CNRS, UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - H Marec
- GEPEA, Université de Nantes, CNRS, UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - B Le-Gouic
- GEPEA, Université de Nantes, CNRS, UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - B Mirabella
- CEA, IBEB, Lab Bioenerget Biotechnol Bacteries & Microalgues, Saint-Paul-lez-Durance, F-13108, France; CNRS, UMR 7265 Biol Veget & Microbiol Environ, Saint-Paul-lez-Durance, F-13108, France; Aix Marseille Université, BVME UMR7265, Marseille, F-13284, France
| | - B Legeret
- CEA, IBEB, Lab Bioenerget Biotechnol Bacteries & Microalgues, Saint-Paul-lez-Durance, F-13108, France; CNRS, UMR 7265 Biol Veget & Microbiol Environ, Saint-Paul-lez-Durance, F-13108, France; Aix Marseille Université, BVME UMR7265, Marseille, F-13284, France
| | - S Bouvet
- CEA, IBEB, Lab Bioenerget Biotechnol Bacteries & Microalgues, Saint-Paul-lez-Durance, F-13108, France; CNRS, UMR 7265 Biol Veget & Microbiol Environ, Saint-Paul-lez-Durance, F-13108, France; Aix Marseille Université, BVME UMR7265, Marseille, F-13284, France
| | - G Peltier
- CEA, IBEB, Lab Bioenerget Biotechnol Bacteries & Microalgues, Saint-Paul-lez-Durance, F-13108, France; CNRS, UMR 7265 Biol Veget & Microbiol Environ, Saint-Paul-lez-Durance, F-13108, France; Aix Marseille Université, BVME UMR7265, Marseille, F-13284, France
| | - Y Li-Beisson
- CEA, IBEB, Lab Bioenerget Biotechnol Bacteries & Microalgues, Saint-Paul-lez-Durance, F-13108, France; CNRS, UMR 7265 Biol Veget & Microbiol Environ, Saint-Paul-lez-Durance, F-13108, France; Aix Marseille Université, BVME UMR7265, Marseille, F-13284, France
| | - S Taha
- Department of Food Science and Technology, Faculty of Agricultural and Veterinary Medicine, Lebanese University, Dekwaneh, Beirut, Lebanon
| | - H Takache
- AZM Center for Biotechnology Research and its Applications, Laboratory of Applied Biotechnology, Lebanese University, EDST, Tripoli, Lebanon
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Benvenuti G, Bosma R, Klok AJ, Ji F, Lamers PP, Barbosa MJ, Wijffels RH. Microalgal triacylglycerides production in outdoor batch-operated tubular PBRs. BIOTECHNOLOGY FOR BIOFUELS 2015; 8:100. [PMID: 26175799 PMCID: PMC4501280 DOI: 10.1186/s13068-015-0283-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 07/02/2015] [Indexed: 05/09/2023]
Abstract
BACKGROUND Microalgal triacylglycerides (TAGs) are a promising sustainable feedstock for the biofuel, chemical and food industry. However, industrial production of microalgal products for commodity markets is not yet economically viable, largely because of low microalgal productivity. The latter is strictly dependent on initial-biomass-specific (IBS) light availability (i.e. ratio of light impinging on reactor ground area divided by initial biomass concentration per ground area). This study investigates the effect of IBS-light availability on batch TAG production for Nannochloropsis sp. cultivated in two outdoor tubular reactors (i.e. vertical and horizontal) at different initial biomass concentrations for the TAG accumulation phase, during two distinct seasons (i.e. high and low light conditions). RESULTS Increasing IBS-light availability led to both a higher IBS-TAG production rate and TAG content at the end of the batch, whereas biomass yield on light decreased. As a result, an optimum IBS-light availability was determined for the TAG productivity obtained at the end of the batch and several guidelines could be established. The vertical reactor (VR) should be operated at an initial biomass concentration of 1.5 g L(-1) to achieve high TAG productivities (1.9 and 3.2 g m(-2) day(-1) under low and high light, respectively). Instead, the horizontal reactor (HR) should be operated at 2.5 g L(-1) under high light (2.6 g m(-2) day(-1)), and at 1.5 g L(-1) under low light (1.4 g m(-2) day(-1)). CONCLUSIONS From this study, the great importance of IBS-light availability on TAG production can be deduced. Although maintaining high light availabilities in the reactor is key to reach high TAG contents at the end of the batch, considerable losses in TAG productivity were observed for the two reactors regardless of light condition, when not operated at optimal initial biomass concentrations (15-40% for VR and 30-60% for HR).
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Affiliation(s)
- Giulia Benvenuti
- />Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands
| | - Rouke Bosma
- />Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands
| | - Anne J Klok
- />Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands
| | - Fang Ji
- />Biomass Engineering Center, China Agricultural University, P.O. Box 50, Beijing, 100083 China
| | - Packo P Lamers
- />Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands
| | - Maria J Barbosa
- />Food and Biobased Research, AlgaePARC, Wageningen UR, P.O. Box 16, 6700 AA Wageningen, The Netherlands
| | - René H Wijffels
- />Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands
- />Biosciences and Aquaculture, Nordland University, 8049 Bodø, Norway
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Kandilian R, Tsao TC, Pilon L. Control of incident irradiance on a batch operated flat-plate photobioreactor. Chem Eng Sci 2014. [DOI: 10.1016/j.ces.2014.07.056] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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