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Assobhi B, Bouchelta Y, Alsubih M, LamiaTrabelsi, Alaoui-Sossé B, Bourgeade P, Aleya L, Mhamdi MA, Bahhou J. What are the growth kinetics and biochemical compositions of microalgae isolated from diverse aquatic ecosystems in Morocco, France, and Tunisia? ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:32680-32693. [PMID: 38662296 DOI: 10.1007/s11356-024-33412-9] [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: 10/26/2023] [Accepted: 04/17/2024] [Indexed: 04/26/2024]
Abstract
Thirty-six microalgae belonging to five taxonomic groups (Cyanobacteria, Chlorophyceae, Diatomophyceae, Euglenophyceae, and Eustigmatophyceae) were identified from six freshwater ecosystems in Morocco, two treatment stations in Etueffont landfill in France and three hot spring waters in Tunisia. Investigations on species growth kinetics and growth rates showed that the cyanobacterium Leptolyngbya gelatinosa exhibited both the highest biomass and growth rate with 4 g DW L-1 and 0.282 day-1, respectively. A significant protein production (more than 40% DW) was observed across the studied species. Cyanobacteria and chlorophytes stood out for their increased protein production with a maximum (66.63 ± 3.84% DW) attained by the cyanobacterium Leptolyngbya sp. Chlorophytes produced substantial amounts of carbohydrates (more than 20% DW). Euglenophytes including Phacus orbicularis and Euglena ehrenbergii along with the chlorophyte Graesiella sp. accumulated significant amounts of lipids (up to 31.12% DW).
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Affiliation(s)
- Bouchra Assobhi
- Faculty of Sciences Dhar El Mahraz, Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Sidi Mohammed Ben Abdellah University of Fez, P.O. Box 1796, Atlas-, Fez, Morocco
| | - Yamina Bouchelta
- Faculty of Sciences Dhar El Mahraz, Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Sidi Mohammed Ben Abdellah University of Fez, P.O. Box 1796, Atlas-, Fez, Morocco
| | - Majed Alsubih
- Department of Civil Engineering, King Khalid University, Guraiger, Abha, 62529, Kingdom of Saudi Arabia
| | - LamiaTrabelsi
- Marine Biodiversity Laboratory, National Institute of Marine Sciences and Technology (INSTM), 2025 Salammbo, University of Carthage, Tunis, Tunisia.
| | - Badr Alaoui-Sossé
- Laboratoire de Chrono-Environnement, UMR CNRS 6249, Université de Bourgogne Franche-Comté, La Bouloie, F-25030, Besançon Cedex, France
| | - Pascale Bourgeade
- Laboratoire de Chrono-Environnement, UMR CNRS 6249, Université de Bourgogne Franche-Comté, La Bouloie, F-25030, Besançon Cedex, France
| | - Lotfi Aleya
- Laboratoire de Chrono-Environnement, UMR CNRS 6249, Université de Bourgogne Franche-Comté, La Bouloie, F-25030, Besançon Cedex, France
| | - Mohammed Alaoui Mhamdi
- Faculty of Sciences Dhar El Mahraz, Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Sidi Mohammed Ben Abdellah University of Fez, P.O. Box 1796, Atlas-, Fez, Morocco
| | - Jamila Bahhou
- Faculty of Sciences Dhar El Mahraz, Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Sidi Mohammed Ben Abdellah University of Fez, P.O. Box 1796, Atlas-, Fez, Morocco
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Kumar S, Tripathi A, Chakraborty I, Ghangrekar MM. Engineered nanomaterials for carbon capture and bioenergy production in microbial electrochemical technologies: A review. BIORESOURCE TECHNOLOGY 2023; 389:129809. [PMID: 37797801 DOI: 10.1016/j.biortech.2023.129809] [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: 08/04/2023] [Revised: 09/27/2023] [Accepted: 09/27/2023] [Indexed: 10/07/2023]
Abstract
The mounting threat of global warming, fuelled by industrialization and anthropogenic activities, is undeniable. In 2017, atmospheric carbon dioxide (CO2), the primary greenhouse gas, exceeded 410 ppm for the first time. Shockingly, on April 28, 2023, this figure surged even higher, reaching an alarming 425 ppm. Even though extensive research has been conducted on developing efficient carbon capture and storage technologies, most suffer from high costs, short lifespans, and significant environmental impacts. Recently, the use of engineered nanomaterials (ENM), particularly in microbial electrochemical technologies (METs), has gained momentum owing to their appropriate physicochemical properties and catalytic activity. By implementing ENM, the MET variants like microbial electrosynthesis (MES) and photosynthetic microbial fuel cells (pMFC) can enhance carbon capture efficiency with simultaneous bioenergy production and wastewater treatment. This review provides an overview of ENMs' role in carbon capture within MES and pMFC, highlighting advancements and charting future research directions.
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Affiliation(s)
- Santosh Kumar
- P. K. Sinha Centre for Bioenergy and Renewables, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Akash Tripathi
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Indrajit Chakraborty
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Makarand M Ghangrekar
- P. K. Sinha Centre for Bioenergy and Renewables, Indian Institute of Technology Kharagpur, Kharagpur 721302, India; Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
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Aratboni HA, Rafiei N, Allaf MM, Abedini S, Rasheed RN, Seif A, Wang S, Ramirez JRM. Nanotechnology: An outstanding tool for increasing and better exploitation of microalgae valuable compounds. ALGAL RES 2023. [DOI: 10.1016/j.algal.2023.103019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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Deepika C, Wolf J, Roles J, Ross I, Hankamer B. Sustainable Production of Pigments from Cyanobacteria. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2023; 183:171-251. [PMID: 36571616 DOI: 10.1007/10_2022_211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Pigments are intensely coloured compounds used in many industries to colour other materials. The demand for naturally synthesised pigments is increasing and their production can be incorporated into circular bioeconomy approaches. Natural pigments are produced by bacteria, cyanobacteria, microalgae, macroalgae, plants and animals. There is a huge unexplored biodiversity of prokaryotic cyanobacteria which are microscopic phototrophic microorganisms that have the ability to capture solar energy and CO2 and use it to synthesise a diverse range of sugars, lipids, amino acids and biochemicals including pigments. This makes them attractive for the sustainable production of a wide range of high-value products including industrial chemicals, pharmaceuticals, nutraceuticals and animal-feed supplements. The advantages of cyanobacteria production platforms include comparatively high growth rates, their ability to use freshwater, seawater or brackish water and the ability to cultivate them on non-arable land. The pigments derived from cyanobacteria and microalgae include chlorophylls, carotenoids and phycobiliproteins that have useful properties for advanced technical and commercial products. Development and optimisation of strain-specific pigment-based cultivation strategies support the development of economically feasible pigment biorefinery scenarios with enhanced pigment yields, quality and price. Thus, this chapter discusses the origin, properties, strain selection, production techniques and market opportunities of cyanobacterial pigments.
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Affiliation(s)
- Charu Deepika
- Institute of Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Juliane Wolf
- Institute of Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - John Roles
- Institute of Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Ian Ross
- Institute of Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Ben Hankamer
- Institute of Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia.
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Nitschke MR, Rosset SL, Oakley CA, Gardner SG, Camp EF, Suggett DJ, Davy SK. The diversity and ecology of Symbiodiniaceae: A traits-based review. ADVANCES IN MARINE BIOLOGY 2022; 92:55-127. [PMID: 36208879 DOI: 10.1016/bs.amb.2022.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Among the most successful microeukaryotes to form mutualisms with animals are dinoflagellates in the family Symbiodiniaceae. These photosynthetic symbioses drive significant primary production and are responsible for the formation of coral reef ecosystems but are particularly sensitive when environmental conditions become extreme. Annual episodes of widespread coral bleaching (disassociation of the mutualistic partnership) and mortality are forecasted from the year 2060 under current trends of ocean warming. However, host cnidarians and dinoflagellate symbionts display exceptional genetic and functional diversity, and meaningful predictions of the future that embrace this biological complexity are difficult to make. A recent move to trait-based biology (and an understanding of how traits are shaped by the environment) has been adopted to move past this problem. The aim of this review is to: (1) provide an overview of the major cnidarian lineages that are symbiotic with Symbiodiniaceae; (2) summarise the symbiodiniacean genera associated with cnidarians with reference to recent changes in taxonomy and systematics; (3) examine the knowledge gaps in Symbiodiniaceae life history from a trait-based perspective; (4) review Symbiodiniaceae trait variation along three abiotic gradients (light, nutrients, and temperature); and (5) provide recommendations for future research of Symbiodiniaceae traits. We anticipate that a detailed understanding of traits will further reveal basic knowledge of the evolution and functional diversity of these mutualisms, as well as enhance future efforts to model stability and change in ecosystems dependent on cnidarian-dinoflagellate organisms.
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Affiliation(s)
- Matthew R Nitschke
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand; Climate Change Cluster, University of Technology Sydney, Broadway, NSW, Australia.
| | - Sabrina L Rosset
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Clinton A Oakley
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Stephanie G Gardner
- Center for Marine Science and Innovation, University of New South Wales Sydney, Kensington, NSW, Australia
| | - Emma F Camp
- Climate Change Cluster, University of Technology Sydney, Broadway, NSW, Australia
| | - David J Suggett
- Climate Change Cluster, University of Technology Sydney, Broadway, NSW, Australia
| | - Simon K Davy
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
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Bleisch R, Freitag L, Ihadjadene Y, Sprenger U, Steingröwer J, Walther T, Krujatz F. Strain Development in Microalgal Biotechnology-Random Mutagenesis Techniques. LIFE (BASEL, SWITZERLAND) 2022; 12:life12070961. [PMID: 35888051 PMCID: PMC9315690 DOI: 10.3390/life12070961] [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: 05/25/2022] [Revised: 06/15/2022] [Accepted: 06/22/2022] [Indexed: 11/17/2022]
Abstract
Microalgal biomass and metabolites can be used as a renewable source of nutrition, pharmaceuticals and energy to maintain or improve the quality of human life. Microalgae’s high volumetric productivity and low impact on the environment make them a promising raw material in terms of both ecology and economics. To optimize biotechnological processes with microalgae, improving the productivity and robustness of the cell factories is a major step towards economically viable bioprocesses. This review provides an overview of random mutagenesis techniques that are applied to microalgal cell factories, with a particular focus on physical and chemical mutagens, mutagenesis conditions and mutant characteristics.
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Affiliation(s)
- Richard Bleisch
- Institute of Natural Materials Technology, Technische Universität Dresden, 01069 Dresden, Germany; (R.B.); (L.F.); (Y.I.); (U.S.); (J.S.); (T.W.)
| | - Leander Freitag
- Institute of Natural Materials Technology, Technische Universität Dresden, 01069 Dresden, Germany; (R.B.); (L.F.); (Y.I.); (U.S.); (J.S.); (T.W.)
| | - Yob Ihadjadene
- Institute of Natural Materials Technology, Technische Universität Dresden, 01069 Dresden, Germany; (R.B.); (L.F.); (Y.I.); (U.S.); (J.S.); (T.W.)
| | - Una Sprenger
- Institute of Natural Materials Technology, Technische Universität Dresden, 01069 Dresden, Germany; (R.B.); (L.F.); (Y.I.); (U.S.); (J.S.); (T.W.)
| | - Juliane Steingröwer
- Institute of Natural Materials Technology, Technische Universität Dresden, 01069 Dresden, Germany; (R.B.); (L.F.); (Y.I.); (U.S.); (J.S.); (T.W.)
| | - Thomas Walther
- Institute of Natural Materials Technology, Technische Universität Dresden, 01069 Dresden, Germany; (R.B.); (L.F.); (Y.I.); (U.S.); (J.S.); (T.W.)
| | - Felix Krujatz
- Institute of Natural Materials Technology, Technische Universität Dresden, 01069 Dresden, Germany; (R.B.); (L.F.); (Y.I.); (U.S.); (J.S.); (T.W.)
- Biotopa gGmbH—Center for Applied Aquaculture & Bioeconomy, 01454 Radeberg, Germany
- Faculty of Natural and Environmental Sciences, University of Applied Sciences Zittau/Görlitz, 02763 Zittau, Germany
- Correspondence:
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Singh V, Mishra V. A review on the current application of light-emitting diodes for microalgae cultivation and its fiscal analysis. Crit Rev Biotechnol 2022:1-15. [PMID: 35658771 DOI: 10.1080/07388551.2022.2057274] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Microalgae are the promising source of products having a low and high economic value that include feedstock and vitamin supplements. Presently, their cultivation is being carried out by using sunlight in the open raceway ponds. However, this process has disadvantages like fluctuations in irradiance of the sunlight due to climatic changes and bad weather. Artificial lights, exploiting light-emitting diodes are beneficial in increasing the volumetric productivity of the microalgal biomass as it provides continuous illumination in the photobioreactors and assist in the external and internal design. However, the application of light-emitting diodes accrues high input costs. Though the cost of light-emitting diodes was estimated long ago, there is no recent economic analysis of the same. This study aims to enlist the applications of light-emitting diodes in microalgal cultivation with reference to internally illuminated photobioreactors coupled with the evaluation of the cost and energy balance of the artificial lights. The calculation shows that the electrical energy cost incurred during the application of light-emitting diodes for microalgae cultivation is approximately USD 15.19 kg-1 DW. The collective fraction of electrical energy transformed into chemical energy (microalgae biomass) is around 6-8%. The cost of the light-emitting diodes can be decreased by the application of an Arduino-based automated control system to control the power supply to LEDs, photovoltaic powered photobioreactors and additional light. These techniques of input cost reduction have also been explored deeply in the present study. As estimated, they can reduce the cost of light-emitting diodes by 50%.HighlightsDiscussion on the current application of light-emitting diodes for microalgae cultivationA broad discussion on internally illuminated photobioreactors and their modificationsMicroalgae cultivation cost exploiting LEDs' is around USD 15.19 kg-1 DWNet conservation of electrical energy during the cultivation process is 6-8%Photovoltaic powered PBRs and Arduino microcontrollers will decrease cultivation cost.
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Affiliation(s)
- Vishal Singh
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Vishal Mishra
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
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Rupawalla Z, Robinson N, Schmidt S, Li S, Carruthers S, Buisset E, Roles J, Hankamer B, Wolf J. Algae biofertilisers promote sustainable food production and a circular nutrient economy - An integrated empirical-modelling study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 796:148913. [PMID: 34328895 DOI: 10.1016/j.scitotenv.2021.148913] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 07/04/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
Agriculture has radically changed the global nitrogen (N) cycle and is heavily dependent on synthetic N-fertiliser. However, the N-use efficiency of synthetic fertilisers is often only 50% with N-losses from crop systems polluting the biosphere, hydrosphere and atmosphere. To address the large carbon and energy footprint of N-fertiliser synthesis and curb N-pollution, new technologies are required to deliver enhanced energy efficiency, decarbonisation and a circular nutrient economy. Algae fertilisers (AF) are an alternative to synthetic N-fertiliser (SF). Here microalgae were used as biofertiliser for spinach production. AF production was evaluated using life-cycle analyses. Over 4 weeks, AF released 63.5% of N as bioavailable ammonium and nitrate, and 25% of phosphorous (P) as phosphate to the growth substrate; SF released 100% N and 20% P. To maximise crop N-use and minimise N-leaching, we explored AF and SF dose-response-curves with spinach in glasshouse conditions. AF-grown spinach produced 36% less biomass than SF-grown plants due to AF's slower and linear N-release; SF exhibited 5-times higher N-leaching than AF. Optimised AF:SF blends yielded greater synchrony between N-release and crop-uptake, boosting crop yields and minimising N-loss. Additional benefits of AF included greener leaves, lower leaf nitrate concentration, and higher microbial diversity and water holding capacity of the growth substrate. An integrated techno-economic and life-cycle-analysis of scaled-up microalgae systems (+/- wastewater) normalised to the application dose showed that replacing the most effective SF-dose with AF lowered the annual carbon footprint of fertiliser production from 3.644 kg CO2 m-2 (C-producing) to -6.039 kg CO2 m-2 (C-assimilation). N-loss from growth substrate was lowered by 54%. Embodied energy for AF:SF blends could be reduced by 29% when cultivating microalgae on wastewater. Conclusions: (i) microalgae offer a sustainable alternative to synthetic N-fertiliser for spinach production and potentially other crop systems, (ii) microalgae biofertilisers support the circular-nutrient-economy and several UN-Sustainable-Development-Goals.
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Affiliation(s)
- Zeenat Rupawalla
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Nicole Robinson
- School of Agriculture and Food Science, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Susanne Schmidt
- School of Agriculture and Food Science, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Sijie Li
- School of Agriculture and Food Science, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Selina Carruthers
- School of Agriculture and Food Science, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Elodie Buisset
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - John Roles
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Ben Hankamer
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Juliane Wolf
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia.
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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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How does the Internet of Things (IoT) help in microalgae biorefinery? Biotechnol Adv 2021; 54:107819. [PMID: 34454007 DOI: 10.1016/j.biotechadv.2021.107819] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 07/27/2021] [Accepted: 08/22/2021] [Indexed: 12/14/2022]
Abstract
Microalgae biorefinery is a platform for the conversion of microalgal biomass into a variety of value-added products, such as biofuels, bio-based chemicals, biomaterials, and bioactive substances. Commercialization and industrialization of microalgae biorefinery heavily rely on the capability and efficiency of large-scale cultivation of microalgae. Thus, there is an urgent need for novel technologies that can be used to monitor, automatically control, and precisely predict microalgae production. In light of this, innovative applications of the Internet of things (IoT) technologies in microalgae biorefinery have attracted tremendous research efforts. IoT has potential applications in a microalgae biorefinery for the automatic control of microalgae cultivation, monitoring and manipulation of microalgal cultivation parameters, optimization of microalgae productivity, identification of toxic algae species, screening of target microalgae species, classification of microalgae species, and viability detection of microalgal cells. In this critical review, cutting-edge IoT technologies that could be adopted to microalgae biorefinery in the upstream and downstream processing are described comprehensively. The current advances of the integration of IoT with microalgae biorefinery are presented. What this review discussed includes automation, sensors, lab-on-chip, and machine learning, which are the main constituent elements and advanced technologies of IoT. Specifically, future research directions are discussed with special emphasis on the development of sensors, the application of microfluidic technology, robotized microalgae, high-throughput platforms, deep learning, and other innovative techniques. This review could contribute greatly to the novelty and relevance in the field of IoT-based microalgae biorefinery to develop smarter, safer, cleaner, greener, and economically efficient techniques for exhaustive energy recovery during the biorefinery process.
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Volpe C, Vadstein O, Andersen G, Andersen T. Nanocosm: a well plate photobioreactor for environmental and biotechnological studies. LAB ON A CHIP 2021; 21:2027-2039. [PMID: 34008610 DOI: 10.1039/d0lc01250e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Phytoplankton are key primary producers at the bottom of the aquatic food chain. They are a highly diverse group of organisms essential for the functioning of our ecosystems and because of their characteristics, their biomass is considered for various commercial applications. A full appreciation of their abundance, diversity and potential is only feasible by using systems that enable simultaneous testing of strains and/or variables in a fast and easy way. A major bottleneck is the lack of a cost-effective method with the capacity for complex experimental set-ups that enable fast and reproducible screening and analysis. In this study, we present nanocosm, a versatile LED-based micro-scale photobioreactor (PBR) that allows simultaneous testing of multiple variables such as temperature and light within the same plate. Every well can be independently controlled for intensity, temporal variation and light type (RGB, white, UV). We show that our systems guarantee homogeneous conditions because of controlled temperature and evaporation and adjustments for light crosstalk. By ensuring controlled environmental conditions the nanocosm is suitable for running factorial experimental designs where each well can be used as an independent micro-PBR. To validate culture performances, we assess well-to-well reproducibility and our results show minimal well-to-well variability for all the conditions tested. Possible modes of operation and application are discussed together with future development of the system.
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Affiliation(s)
- Charlotte Volpe
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, N-7491, Trondheim, Norway.
| | - Olav Vadstein
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, N-7491, Trondheim, Norway.
| | | | - Tom Andersen
- Department of Biosciences, Section for Aquatic Biology and Toxicology (AQUA), University of Oslo, N-0316, Oslo, Norway
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Musa M, Ward A, Ayoko GA, Rösch C, Brown R, Rainey TJ. Single-step dynamic dewatering of microalgae from dilute suspensions using flocculant assisted filtration. Microb Cell Fact 2020; 19:222. [PMID: 33276792 PMCID: PMC7716443 DOI: 10.1186/s12934-020-01472-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 11/07/2020] [Indexed: 11/10/2022] Open
Abstract
Background Dewatering constitutes a major challenge to the production of microalgae, accounting for 20–30% of the product cost. This presents a setback for the applicability of microalgae in the development of several sustainable products. This study presents an investigation into the dynamic dewatering of microalgae in a combined flocculation-filtration process. The effect of process conditions on the performance of 12 flocculants and their mixtures was assessed. Results The mechanism of flocculation via the electrostatic path was dominated by charge neutralization and subsequently followed bridging in a ‘sweep flocculation’ process. Cationic polyacrylamide (CPAM) based flocculants recorded the highest biomass retention with PAM1 and PAM2 attaining 99 and 98% retention with flocculant dosages of 10 and 15 mg/L respectively. Polyvinylamine (PVAM) was also found to improve system stability across the pH range 4–10. Alum was observed to be only effective in charge neutralization, bringing the system close to its isoelectric point (IEP). Chemometric analysis using the multi-criteria decision methods, PROMETHEE and GAIA, was applied to provide a sequential performance ranking based on the net outranking flow (ф) from 207 observations. A graphical exploration of the flocculant performance pattern, grouping the observations into clusters in relation to the decision axis (\documentclass[12pt]{minimal}
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\begin{document}$$\pi$$\end{document}π), which indicated the weighted resultant of most favorable performance for all criteria was explored. Conclusion CPAM based flocculants and their mixtures demonstrated superior performance due to their viscoelastic behaviour under turbulence. The use of PVAM or alum in mixtures with CPAM reduced the required doses of both flocculants, which will provide beneficial financial impact for largescale microalgae dewatering in a flocculant assisted dynamic filtration process. Chemometric analysis based on the physico-chemical properties of the system provides a time saving assessment of performance across several criteria. The study findings provide an important foundation for flocculant assisted dynamic filtration processes.
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Affiliation(s)
- Mutah Musa
- Biofuel Engine Research Facility (BERF), School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia.,Advanced Water Management Centre (AWMC), University of Queensland (UQ), St Lucia, Brisbane, QLD, 4072, Australia
| | - Andrew Ward
- Innovation Centre, Queensland Urban Utilities (QUU), Main Beach Road Myrtletown, Pinkenba, Brisbane, QLD, 4008, Australia.,Advanced Water Management Centre (AWMC), University of Queensland (UQ), St Lucia, Brisbane, QLD, 4072, Australia
| | - Godwin A Ayoko
- Environmental Technologies Discipline, School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology (QUT), Brisbane, QLD, 4000, Australia
| | - Christine Rösch
- Institute for Technology Assessment and Systems Analysis (ITAS), Karlsruhe Institute of Technology, 76021, Karlsruhe, Germany
| | - Richard Brown
- Biofuel Engine Research Facility (BERF), School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
| | - Thomas J Rainey
- Biofuel Engine Research Facility (BERF), School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia.
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Bates H, Zavafer A, Szabó M, Ralph PJ. The Phenobottle, an open-source photobioreactor platform for environmental simulation. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.102105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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15
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Musa M, Wolf J, Stephens E, Hankamer B, Brown R, Rainey TJ. Cationic polyacrylamide induced flocculation and turbulent dewatering of microalgae on a Britt Dynamic Drainage Jar. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116004] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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An innovative automated active compound screening system allows high-throughput optimization of somatic embryogenesis in Coffea arabica. Sci Rep 2020; 10:810. [PMID: 31965007 PMCID: PMC6972844 DOI: 10.1038/s41598-020-57800-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 01/07/2020] [Indexed: 11/08/2022] Open
Abstract
Somatic embryogenesis (SE) faces many challenges in fulfilling the growing demand for elite materials. A high-throughput approach is required to accelerate the optimization of SE protocols by multiplying experimental conditions within a limited time period. For the first time in plant micropropagation, we have developed a miniaturized and automated screening system to meet high-throughput standards. Coffea arabica embryo regeneration, classically achieved in 250-ml Erlenmeyer flasks, was successfully miniaturized in 24-well plates, allowing a volume downscaling factor of 100 and a space saving of 53 cm2/well. Cell clusters were ground and filtered to fit the automated pipetting platform, leading to fast, reproducible and uniform cluster distribution (23.0 ± 5.5 cell clusters/well) and successful regeneration (6.5 ± 2.2 embryos/well). Pilot screening of active compounds on SE was carried out. Compounds belonging to the histone deacetylase inhibitor family were tested for embryo regeneration efficiency. Cells treated with 1 µM Trichostatin A showed a marked 3-fold increase in the number of regenerated embryos. When re-tested in 250-ml flasks, the same enhancement was obtained, thereby validating the miniaturized and automated screening method. These results showed that our screening system is reliable and well suited to screening hundreds of compounds, offering unprecedented perspectives in plant micropropagation.
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Roles J, Yarnold J, Wolf J, Stephens E, Hussey K, Hankamer B. Charting a development path to deliver cost competitive microalgae-based fuels. ALGAL RES 2020. [DOI: 10.1016/j.algal.2019.101721] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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18
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Nguyen MK, Moon JY, Bui VKH, Oh YK, Lee YC. Recent advanced applications of nanomaterials in microalgae biorefinery. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101522] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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19
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Morschett H, Loomba V, Huber G, Wiechert W, von Lieres E, Oldiges M. Laboratory-scale photobiotechnology-current trends and future perspectives. FEMS Microbiol Lett 2019; 365:4604817. [PMID: 29126108 DOI: 10.1093/femsle/fnx238] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 11/07/2017] [Indexed: 11/13/2022] Open
Abstract
Phototrophic bioprocesses are a promising puzzle piece in future bioeconomy concepts but yet mostly fail for economic reasons. Besides other aspects, this is mainly attributed to the omnipresent issue of optimal light supply impeding scale-up and -down of phototrophic processes according to classic established concepts. This MiniReview examines two current trends in photobiotechnology, namely microscale cultivation and modeling and simulation. Microphotobioreactors are a valuable and promising trend with microfluidic chips and microtiter plates as predominant design concepts. Providing idealized conditions, chip systems are preferably to be used for acquiring physiological data of microalgae while microtiter plate systems are more appropriate for process parameter and medium screenings. However, these systems are far from series technology and significant improvements especially regarding flexible light supply remain crucial. Whereas microscale is less addressed by modeling and simulation so far, benchtop photobioreactor design and operation have successfully been studied using such tools. This particularly includes quantitative model-assisted understanding of mixing, mass transfer, light dispersion and particle tracing as well as their relevance for microalgal performance. The ultimate goal will be to combine physiological data from microphotobioreactors with hybrid models to integrate metabolism and reactor simulation in order to facilitate knowledge-based scale transfer of phototrophic bioprocesses.
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Affiliation(s)
- Holger Morschett
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Varun Loomba
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52428 Jülich, Germany.,IBG-2: Plant Sciences, Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Gregor Huber
- IBG-2: Plant Sciences, Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Wolfgang Wiechert
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Eric von Lieres
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Marco Oldiges
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52428 Jülich, Germany.,Institute of Biotechnology, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
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Sivakaminathan S, Hankamer B, Wolf J, Yarnold J. High-throughput optimisation of light-driven microalgae biotechnologies. Sci Rep 2018; 8:11687. [PMID: 30076312 PMCID: PMC6076246 DOI: 10.1038/s41598-018-29954-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 07/19/2018] [Indexed: 12/18/2022] Open
Abstract
Microalgae biotechnologies are rapidly developing into new commercial settings. Several high value products already exist on the market, and systems development is focused on cost reduction to open up future economic opportunities for food, fuel and freshwater production. Light is a key environmental driver for photosynthesis and optimising light capture is therefore critical for low cost, high efficiency systems. Here a novel high-throughput screen that simulates fluctuating light regimes in mass cultures is presented. The data was used to model photosynthetic efficiency (PEµ, mol photon-1 m2) and chlorophyll fluorescence of two green algae, Chlamydomonas reinhardtii and Chlorella sp. Response surface methodology defined the effect of three key variables: density factor (Df, 'culture density'), cycle time (tc, 'mixing rate'), and maximum incident irradiance (Imax). Both species exhibited a large rise in PEµ with decreasing Imax and a minimal effect of tc (between 3-20 s). However, the optimal Df of 0.4 for Chlamydomonas and 0.8 for Chlorella suggested strong preferences for dilute and dense cultures respectively. Chlorella had a two-fold higher optimised PEµ than Chlamydomonas, despite its higher light sensitivity. These results demonstrate species-specific light preferences within the green algae clade. Our high-throughput screen enables rapid strain selection and process optimisation.
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Affiliation(s)
- Shwetha Sivakaminathan
- The University of Queensland, Institute for Molecular Bioscience, 306 Carmody Road, St Lucia, Australia
| | - Ben Hankamer
- The University of Queensland, Institute for Molecular Bioscience, 306 Carmody Road, St Lucia, Australia
| | - Juliane Wolf
- The University of Queensland, Institute for Molecular Bioscience, 306 Carmody Road, St Lucia, Australia.
| | - Jennifer Yarnold
- The University of Queensland, Institute for Molecular Bioscience, 306 Carmody Road, St Lucia, Australia.
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Carrera Pacheco SE, Hankamer B, Oey M. Optimising light conditions increases recombinant protein production in Chlamydomonas reinhardtii chloroplasts. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.04.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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22
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Molino JVD, de Carvalho JCM, Mayfield S. Evaluation of secretion reporters to microalgae biotechnology: Blue to red fluorescent proteins. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.02.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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23
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Comparison of secretory signal peptides for heterologous protein expression in microalgae: Expanding the secretion portfolio for Chlamydomonas reinhardtii. PLoS One 2018; 13:e0192433. [PMID: 29408937 PMCID: PMC5800701 DOI: 10.1371/journal.pone.0192433] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 01/22/2018] [Indexed: 12/22/2022] Open
Abstract
Efficient protein secretion is a desirable trait for any recombinant protein expression system, together with simple, low-cost, and defined media, such as the typical media used for photosynthetic cultures of microalgae. However, low titers of secreted heterologous proteins are usually obtained, even with the most extensively studied microalga Chlamydomonas reinhardtii, preventing their industrial application. In this study, we aimed to expand and evaluate secretory signal peptides (SP) for heterologous protein secretion in C. reinhardtii by comparing previously described SP with untested sequences. We compared the SPs from arylsulfatase 1 and carbonic anhydrase 1, with those of untried SPs from binding protein 1, an ice-binding protein, and six sequences identified in silico. We identified over 2000 unique SPs using the SignalP 4.0 software. mCherry fluorescence was used to compare the protein secretion of up to 96 colonies for each construct, non-secretion construct, and parental wild-type cc1690 cells. Supernatant fluorescence varied according to the SP used, with a 10-fold difference observed between the highest and lowest secretors. Moreover, two SPs identified in silico secreted the highest amount of mCherry. Our results demonstrate that the SP should be carefully selected and that efficient sequences can be coded in the C. reinhardtii genome. The SPs described here expand the portfolio available for research on heterologous protein secretion and for biomanufacturing applications.
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Dyo YM, Purton S. The algal chloroplast as a synthetic biology platform for production of therapeutic proteins. Microbiology (Reading) 2018; 164:113-121. [DOI: 10.1099/mic.0.000599] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Yuliya M. Dyo
- Molecular Research of Microalgae Laboratory, M. A. Ajtkhozhin Institute of Molecular Biology and Biochemistry, Almaty, Kazakhstan
- Department of Biotechnology, Kazakh National Research Technology University, Almaty, Kazakhstan
| | - Saul Purton
- Algal Research Group, Institute of Structural and Molecular Biology, University College London, Gower Street, London, WC1E 6BT, UK
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Selekman JA, Qiu J, Tran K, Stevens J, Rosso V, Simmons E, Xiao Y, Janey J. High-Throughput Automation in Chemical Process Development. Annu Rev Chem Biomol Eng 2017; 8:525-547. [DOI: 10.1146/annurev-chembioeng-060816-101411] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Joshua A. Selekman
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, New Brunswick, New Jersey 08903;, , , , , , ,
| | - Jun Qiu
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, New Brunswick, New Jersey 08903;, , , , , , ,
| | - Kristy Tran
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, New Brunswick, New Jersey 08903;, , , , , , ,
| | - Jason Stevens
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, New Brunswick, New Jersey 08903;, , , , , , ,
| | - Victor Rosso
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, New Brunswick, New Jersey 08903;, , , , , , ,
| | - Eric Simmons
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, New Brunswick, New Jersey 08903;, , , , , , ,
| | - Yi Xiao
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, New Brunswick, New Jersey 08903;, , , , , , ,
| | - Jacob Janey
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, New Brunswick, New Jersey 08903;, , , , , , ,
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Morschett H, Freier L, Rohde J, Wiechert W, von Lieres E, Oldiges M. A framework for accelerated phototrophic bioprocess development: integration of parallelized microscale cultivation, laboratory automation and Kriging-assisted experimental design. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:26. [PMID: 28163783 PMCID: PMC5282810 DOI: 10.1186/s13068-017-0711-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 01/13/2017] [Indexed: 06/01/2023]
Abstract
BACKGROUND Even though microalgae-derived biodiesel has regained interest within the last decade, industrial production is still challenging for economic reasons. Besides reactor design, as well as value chain and strain engineering, laborious and slow early-stage parameter optimization represents a major drawback. RESULTS The present study introduces a framework for the accelerated development of phototrophic bioprocesses. A state-of-the-art micro-photobioreactor supported by a liquid-handling robot for automated medium preparation and product quantification was used. To take full advantage of the technology's experimental capacity, Kriging-assisted experimental design was integrated to enable highly efficient execution of screening applications. The resulting platform was used for medium optimization of a lipid production process using Chlorella vulgaris toward maximum volumetric productivity. Within only four experimental rounds, lipid production was increased approximately threefold to 212 ± 11 mg L-1 d-1. Besides nitrogen availability as a key parameter, magnesium, calcium and various trace elements were shown to be of crucial importance. Here, synergistic multi-parameter interactions as revealed by the experimental design introduced significant further optimization potential. CONCLUSIONS The integration of parallelized microscale cultivation, laboratory automation and Kriging-assisted experimental design proved to be a fruitful tool for the accelerated development of phototrophic bioprocesses. By means of the proposed technology, the targeted optimization task was conducted in a very timely and material-efficient manner.
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Affiliation(s)
- Holger Morschett
- Forschungszentrum Jülich GmbH, Institute of Bio- and Geosciences, IBG-1: Biotechnology, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Lars Freier
- Forschungszentrum Jülich GmbH, Institute of Bio- and Geosciences, IBG-1: Biotechnology, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Jannis Rohde
- Forschungszentrum Jülich GmbH, Institute of Bio- and Geosciences, IBG-1: Biotechnology, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Wolfgang Wiechert
- Forschungszentrum Jülich GmbH, Institute of Bio- and Geosciences, IBG-1: Biotechnology, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Eric von Lieres
- Forschungszentrum Jülich GmbH, Institute of Bio- and Geosciences, IBG-1: Biotechnology, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Marco Oldiges
- Forschungszentrum Jülich GmbH, Institute of Bio- and Geosciences, IBG-1: Biotechnology, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
- Institute of Biotechnology, RWTH Aachen University, Aachen, Germany
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Morschett H, Schiprowski D, Rohde J, Wiechert W, Oldiges M. Comparative evaluation of phototrophic microtiter plate cultivation against laboratory-scale photobioreactors. Bioprocess Biosyst Eng 2017; 40:663-673. [DOI: 10.1007/s00449-016-1731-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 12/21/2016] [Indexed: 11/28/2022]
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Morschett H, Schiprowski D, Müller C, Mertens K, Felden P, Meyer J, Wiechert W, Oldiges M. Design and validation of a parallelized micro-photobioreactor enabling phototrophic bioprocess development at elevated throughput. Biotechnol Bioeng 2016; 114:122-131. [DOI: 10.1002/bit.26051] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 07/05/2016] [Accepted: 07/15/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Holger Morschett
- Forschungszentrum Jülich GmbH; Institute of Bio- and Geosciences; IBG-1: Biotechnology Jülich Germany
| | - Danny Schiprowski
- Forschungszentrum Jülich GmbH; Institute of Bio- and Geosciences; IBG-1: Biotechnology Jülich Germany
| | | | | | | | | | - Wolfgang Wiechert
- Forschungszentrum Jülich GmbH; Institute of Bio- and Geosciences; IBG-1: Biotechnology Jülich Germany
| | - Marco Oldiges
- Forschungszentrum Jülich GmbH; Institute of Bio- and Geosciences; IBG-1: Biotechnology Jülich Germany
- Institute of Biotechnology; RWTH Aachen University; Aachen Germany
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29
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Optimization of spectral light quality for growth and product formation in different microalgae using a continuous photobioreactor. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.01.011] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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30
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Yarnold J, Ross IL, Hankamer B. Photoacclimation and productivity of Chlamydomonas reinhardtii grown in fluctuating light regimes which simulate outdoor algal culture conditions. ALGAL RES 2016. [DOI: 10.1016/j.algal.2015.11.001] [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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Application of light-emitting diodes (LEDs) in cultivation of phototrophic microalgae: current state and perspectives. Appl Microbiol Biotechnol 2015; 100:1077-1088. [DOI: 10.1007/s00253-015-7144-6] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 11/02/2015] [Accepted: 11/04/2015] [Indexed: 10/22/2022]
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32
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Miazek K, Iwanek W, Remacle C, Richel A, Goffin D. Effect of Metals, Metalloids and Metallic Nanoparticles on Microalgae Growth and Industrial Product Biosynthesis: A Review. Int J Mol Sci 2015; 16:23929-69. [PMID: 26473834 PMCID: PMC4632732 DOI: 10.3390/ijms161023929] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 09/11/2015] [Accepted: 09/24/2015] [Indexed: 12/29/2022] Open
Abstract
Microalgae are a source of numerous compounds that can be used in many branches of industry. Synthesis of such compounds in microalgal cells can be amplified under stress conditions. Exposure to various metals can be one of methods applied to induce cell stress and synthesis of target products in microalgae cultures. In this review, the potential of producing diverse biocompounds (pigments, lipids, exopolymers, peptides, phytohormones, arsenoorganics, nanoparticles) from microalgae cultures upon exposure to various metals, is evaluated. Additionally, different methods to alter microalgae response towards metals and metal stress are described. Finally, possibilities to sustain high growth rates and productivity of microalgal cultures in the presence of metals are discussed.
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Affiliation(s)
- Krystian Miazek
- AgricultureIsLife Platform, University of Liege-Gembloux Agro-Bio Tech, Passage des Déportés 2, Gembloux B-5030, Belgium.
| | - Waldemar Iwanek
- Faculty of Mathematics and Natural Sciences, the Jan Kochanowski University in Kielce, Swietokrzyska 15, Kielce 25-406, Poland.
| | - Claire Remacle
- Genetics and Physiology of Microalgae, Institute of Botany, University of Liege, B22, 27, Bld du Rectorat, Liège B-4000, Belgium.
| | - Aurore Richel
- Unit of Biological and Industrial Chemistry, University of Liege-Gembloux Agro-Bio Tech, Passage des Déportés 2, Gembloux B-5030, Belgium.
| | - Dorothee Goffin
- Cellule Innovation et Créativité, University of Liege-Gembloux Agro-Bio Tech, Passage des Déportés 2, Gembloux B-5030, Belgium.
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Wolf J, Ross IL, Radzun KA, Jakob G, Stephens E, Hankamer B. High-throughput screen for high performance microalgae strain selection and integrated media design. ALGAL RES 2015. [DOI: 10.1016/j.algal.2015.07.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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