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Onomu AJ, Okuthe GE. The Application of Fungi and Their Secondary Metabolites in Aquaculture. J Fungi (Basel) 2024; 10:711. [PMID: 39452663 PMCID: PMC11508898 DOI: 10.3390/jof10100711] [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: 09/09/2024] [Revised: 10/05/2024] [Accepted: 10/06/2024] [Indexed: 10/26/2024] Open
Abstract
Ensuring sustainability has increasingly become a significant concern not only in aquaculture but in the general agrifood sector. Therefore, it is imperative to investigate pathways to feed substitutes/best practices to enhance aquaculture sustainability. The application of fungi in aquaculture provides innovative methods to enhance the sustainability and productivity of aquaculture. Fungi play numerous roles in aquaculture, including growth, immunity enhancement and disease resistance. They also play a role in bioremediation of waste and bioflocculation. The application of fungi improves the suitability and utilization of terrestrial plant ingredients in aquaculture by reducing the fibre fractions and anti-nutritional factors and increasing the nutrients and mineral contents of plant ingredients. Fungi are good flotation agents and can enhance the buoyancy of aquafeed. Pigments from fungi enhance the colouration of fish fillets, making them more attractive to consumers. This paper, via the relevant literature, explores the multifaceted roles of fungi in aquaculture, emphasizing their potential to transform aquaculture through environmentally friendly and sustainable techniques. The effectiveness of fungi in reducing fibre fractions and enhancing nutrient availability is influenced by the duration of fermentation and the dosage administered, which may differ for various feed ingredients, making it difficult for most aquaculture farmers to apply fungi approximately. Therefore, the most effective dosage and fermentation duration for each feed ingredient should be investigated.
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Affiliation(s)
- Abigail John Onomu
- Department of Biological & Environmental Sciences, Walter Sisulu University, Mthatha 5117, South Africa;
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2
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Yang Y, Jalalah M, Alsareii SA, Harraz FA, Thakur N, Zheng Y, Alalawy AI, Koutb M, Salama ES. Potential of oleaginous microbes for lipid accumulation and renewable energy generation. World J Microbiol Biotechnol 2024; 40:337. [PMID: 39358563 DOI: 10.1007/s11274-024-04145-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 09/15/2024] [Indexed: 10/04/2024]
Abstract
Biocomponents (such as lipids) accumulate in oleaginous microorganisms and could be used for renewable energy production. Oleaginous microbes are characterized by their ability to accumulate high levels of lipids, which can be converted into biodiesel. The oleaginous microbes (including microalgae, bacteria, yeast, and fungi) can utilize diverse substrates. Thus, in this study, commercially viable oleaginous microorganisms are comparatively summarized for their growth conditions, substrate utilization, and applications in biotechnological processes. Lipid content is species-dependent, as are culture conditions (such as temperature, pH, nutrients, and culture time) and substrates. Lipid production can be increased by selecting suitable microorganisms and substrates, optimizing environmental conditions, and using genetic engineering techniques. In addition, the emphasis on downstream processes (including harvesting, cell disruption, lipid extraction, and transesterification) highlights their critical role in enhancing cost-effectiveness. Oleaginous microorganisms are potential candidates for lipid biosynthesis and could play a key role in meeting the energy needs of the world in the future.
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Affiliation(s)
- Yulu Yang
- Department of Occupational and Environmental Health, School of Public Health, Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | - Mohammed Jalalah
- Advanced Materials and Nano-Research Centre (AMNRC), Najran University, Najran, 11001, Saudi Arabia
- Department of Electrical Engineering, College of Engineering, Najran University, Najran, 11001, Saudi Arabia
| | - Saeed A Alsareii
- Department of Surgery, College of Medicine, Najran University, Najran, 11001, Saudi Arabia
| | - Farid A Harraz
- Advanced Materials and Nano-Research Centre (AMNRC), Najran University, Najran, 11001, Saudi Arabia
- Department of Chemistry, Faculty of Science and Arts at Sharurah, Najran University, Sharurah, 68342, Saudi Arabia
| | - Nandini Thakur
- Department of Occupational and Environmental Health, School of Public Health, Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | | | - Adel I Alalawy
- Department of Biochemistry, Faculty of Science, University of Tabuk, Tabuk, 71491, Kingdom of Saudi Arabia
| | - Mostafa Koutb
- Department of Biology, Faculty of Science, Umm Al-Qura University, 715, Makkah, Saudi Arabia
| | - El-Sayed Salama
- Department of Occupational and Environmental Health, School of Public Health, Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China.
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3
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Abdullah M, Ali Z, Yasin MT, Amanat K, Sarwar F, Khan J, Ahmad K. Advancements in sustainable production of biofuel by microalgae: Recent insights and future directions. ENVIRONMENTAL RESEARCH 2024; 262:119902. [PMID: 39222730 DOI: 10.1016/j.envres.2024.119902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 08/27/2024] [Accepted: 08/30/2024] [Indexed: 09/04/2024]
Abstract
Microalgae is considered as sustainable and viable feedstock for biofuel production due to its significant advantages over terrestrial plants. Algal biofuels have received significant attention among researchers and energy experts owing to an upsurge in global energy issues emanating from depletion in fossil fuel reserves increasing greenhouse gases emission conflict among agricultural crops, traditional biomass feedstock, and potential futuristic energy security. Further, the exploration of value-added microalgae as sustainable and viable feedstock for the production of variety of biofuels such as biogas, bio-hydrogen, bioethanol, and biodiesel are addressed. Moreover, the assessment of life-cycle, energy balance, and environmental impacts of biofuel production from microalgae are briefly discussed. The present study focused on recent advancements in synthetic biology, metabolic engineering tools, algal bio refinery, and the optimization of algae growth conditions. This paper also elucidates the function of microalgae as bio refineries, the conditions of algae-based cultures, and other operational factors that must be adjusted to produce biofuels that are price-competitive with fossil fuels.
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Affiliation(s)
- Muhammad Abdullah
- Industrial Biotechnology Division, National Institute for Biotechnology & Genetic Engineering, P.O. Box 577-Jhang Road, Faisalabad, Pakistan; Institute of Biological Sciences, Khwaja Fareed University of Engineering & Information Technology, 64200, Rahim Yar Khan, Pakistan.
| | - Zain Ali
- Institute of Biological Sciences, Khwaja Fareed University of Engineering & Information Technology, 64200, Rahim Yar Khan, Pakistan.
| | - Muhammad Talha Yasin
- Institute of Biological Sciences, Khwaja Fareed University of Engineering & Information Technology, 64200, Rahim Yar Khan, Pakistan.
| | - Kinza Amanat
- Institute of Biological Sciences, Khwaja Fareed University of Engineering & Information Technology, 64200, Rahim Yar Khan, Pakistan
| | - Fatima Sarwar
- Institute of Chemistry, Khwaja Fareed University of Engineering & Information Technology, 64200, Rahim Yar Khan, Pakistan
| | - Jallat Khan
- Institute of Biological Sciences, Khwaja Fareed University of Engineering & Information Technology, 64200, Rahim Yar Khan, Pakistan; Institute of Chemistry, Khwaja Fareed University of Engineering & Information Technology, 64200, Rahim Yar Khan, Pakistan
| | - Khurshid Ahmad
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, No. 1299, Sansha Road, Qingdao, Shandong Province, 266404, PR China
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4
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Jouhet J, Alves E, Boutté Y, Darnet S, Domergue F, Durand T, Fischer P, Fouillen L, Grube M, Joubès J, Kalnenieks U, Kargul JM, Khozin-Goldberg I, Leblanc C, Letsiou S, Lupette J, Markov GV, Medina I, Melo T, Mojzeš P, Momchilova S, Mongrand S, Moreira ASP, Neves BB, Oger C, Rey F, Santaeufemia S, Schaller H, Schleyer G, Tietel Z, Zammit G, Ziv C, Domingues R. Plant and algal lipidomes: Analysis, composition, and their societal significance. Prog Lipid Res 2024; 96:101290. [PMID: 39094698 DOI: 10.1016/j.plipres.2024.101290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 07/25/2024] [Accepted: 07/26/2024] [Indexed: 08/04/2024]
Abstract
Plants and algae play a crucial role in the earth's ecosystems. Through photosynthesis they convert light energy into chemical energy, capture CO2 and produce oxygen and energy-rich organic compounds. Photosynthetic organisms are primary producers and synthesize the essential omega 3 and omega 6 fatty acids. They have also unique and highly diverse complex lipids, such as glycolipids, phospholipids, triglycerides, sphingolipids and phytosterols, with nutritional and health benefits. Plant and algal lipids are useful in food, feed, nutraceutical, cosmeceutical and pharmaceutical industries but also for green chemistry and bioenergy. The analysis of plant and algal lipidomes represents a significant challenge due to the intricate and diverse nature of their composition, as well as their plasticity under changing environmental conditions. Optimization of analytical tools is crucial for an in-depth exploration of the lipidome of plants and algae. This review highlights how lipidomics analytical tools can be used to establish a complete mapping of plant and algal lipidomes. Acquiring this knowledge will pave the way for the use of plants and algae as sources of tailored lipids for both industrial and environmental applications. This aligns with the main challenges for society, upholding the natural resources of our planet and respecting their limits.
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Affiliation(s)
- Juliette Jouhet
- Laboratoire de Physiologie Cellulaire et Végétale, CNRS/INRAE/CEA/Grenoble Alpes Univ., 38000 Grenoble, France.
| | - Eliana Alves
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro 3810-193, Portugal
| | - Yohann Boutté
- Laboratoire de Biogenèse Membranaire, UMR5200 CNRS-Université de Bordeaux, CNRS, Villenave-d'Ornon, France
| | | | - Frédéric Domergue
- Laboratoire de Biogenèse Membranaire, UMR5200 CNRS-Université de Bordeaux, CNRS, Villenave-d'Ornon, France
| | - Thierry Durand
- Institut des Biomolécules Max Mousseron (IBMM), Pôle Chimie Balard Recherche, University of Montpellier, ENSCN, UMR 5247 CNRS, France
| | - Pauline Fischer
- Institut des Biomolécules Max Mousseron (IBMM), Pôle Chimie Balard Recherche, University of Montpellier, ENSCN, UMR 5247 CNRS, France
| | - Laetitia Fouillen
- Laboratoire de Biogenèse Membranaire, UMR5200 CNRS-Université de Bordeaux, CNRS, Villenave-d'Ornon, France
| | - Mara Grube
- Institute of Microbiology and Biotechnology, University of Latvia, Riga, Latvia
| | - Jérôme Joubès
- Laboratoire de Biogenèse Membranaire, UMR5200 CNRS-Université de Bordeaux, CNRS, Villenave-d'Ornon, France
| | - Uldis Kalnenieks
- Institute of Microbiology and Biotechnology, University of Latvia, Riga, Latvia
| | - Joanna M Kargul
- Solar Fuels Laboratory, Center of New Technologies, University of Warsaw, 02-097 Warsaw, Poland
| | - Inna Khozin-Goldberg
- Microalgal Biotechnology Laboratory, The French Associates Institute for Dryland Agriculture and Biotechnology, The J. Blaustein Institutes for Desert Research, Ben Gurion University, Midreshet Ben Gurion 8499000, Israel
| | - Catherine Leblanc
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff (SBR), 29680 Roscoff, France
| | - Sophia Letsiou
- Department of Food Science and Technology, University of West Attica, Ag. Spiridonos str. Egaleo, 12243 Athens, Greece
| | - Josselin Lupette
- Laboratoire de Biogenèse Membranaire, UMR5200 CNRS-Université de Bordeaux, CNRS, Villenave-d'Ornon, France
| | - Gabriel V Markov
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff (SBR), 29680 Roscoff, France
| | - Isabel Medina
- Instituto de Investigaciones Marinas - Consejo Superior de Investigaciones Científicas (IIM-CSIC), Eduardo Cabello 6, E-36208 Vigo, Galicia, Spain
| | - Tânia Melo
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro 3810-193, Portugal; CESAM-Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro 3810-193, Portugal
| | - Peter Mojzeš
- Institute of Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, CZ-12116 Prague 2, Czech Republic
| | - Svetlana Momchilova
- Department of Lipid Chemistry, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, bl. 9, BG-1113 Sofia, Bulgaria
| | - Sébastien Mongrand
- Laboratoire de Biogenèse Membranaire, UMR5200 CNRS-Université de Bordeaux, CNRS, Villenave-d'Ornon, France
| | - Ana S P Moreira
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro 3810-193, Portugal
| | - Bruna B Neves
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro 3810-193, Portugal; CESAM-Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro 3810-193, Portugal
| | - Camille Oger
- Institut des Biomolécules Max Mousseron (IBMM), Pôle Chimie Balard Recherche, University of Montpellier, ENSCN, UMR 5247 CNRS, France
| | - Felisa Rey
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro 3810-193, Portugal; CESAM-Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro 3810-193, Portugal
| | - Sergio Santaeufemia
- Solar Fuels Laboratory, Center of New Technologies, University of Warsaw, 02-097 Warsaw, Poland
| | - Hubert Schaller
- Institut de Biologie Moléculaire des Plantes du CNRS, Université de Strasbourg, 12 rue du Général Zimmer, F-67083 Strasbourg, France
| | - Guy Schleyer
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology (Leibniz-HKI), 07745 Jena, Germany
| | - Zipora Tietel
- Department of Food Science, Gilat Research Center, Agricultural Research Organization, Volcani Institute, M.P. Negev 8531100, Israel
| | - Gabrielle Zammit
- Laboratory of Applied Phycology, Department of Biology, University of Malta, Msida MSD 2080, Malta
| | - Carmit Ziv
- Department of Postharvest Science, Agricultural Research Organization, Volcani Institute, Rishon LeZion 7505101, Israel
| | - Rosário Domingues
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro 3810-193, Portugal; CESAM-Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Santiago University Campus, Aveiro 3810-193, Portugal.
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Maia C, Pôjo V, Tavares T, Pires JCM, Malcata FX. Surfactant-Mediated Microalgal Flocculation: Process Efficiency and Kinetic Modelling. Bioengineering (Basel) 2024; 11:722. [PMID: 39061804 PMCID: PMC11274027 DOI: 10.3390/bioengineering11070722] [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: 06/05/2024] [Revised: 07/09/2024] [Accepted: 07/14/2024] [Indexed: 07/28/2024] Open
Abstract
Microalgae are a valuable source of lipids, proteins, and pigments, but there are challenges in large-scale production, especially in harvesting. Existing methods lack proven efficacy and cost-effectiveness. However, flocculation, an energy-efficient technique, is emerging as a promising solution. Integrating surfactants enhances microalgal harvesting and disruption simultaneously, reducing processing costs. This study investigated cetyltrimethylammonium bromide (CTAB), dodecyltrimethylammonium bromide (DTAB), and sodium dodecyl sulphate (SDS) for harvesting Tetraselmis sp. strains (75LG and 46NLG). CTAB exhibits superior results, with 88% harvesting efficiency at 1500 and 2000 mg L-1 for 75LG and 46NLG, respectively, for 60 min of sedimentation-thus being able to reduce the operating time. Beyond evaluating harvesting efficiency, our study explored the kinetics of the process; the modified Gompertz model led to the best fit. Furthermore, the largest kinetic constants were observed with CTAB, thus highlighting its efficacy in optimising the microalgal harvesting process. With the incorporation of the suggested enhancements, which should be addressed in future work, CTAB could hold the potential to optimise microalgal harvesting for cost-effective and sustainable large-scale production, eventually unlocking the commercial potential of microalgae for biodiesel production.
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Affiliation(s)
- Carolina Maia
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; (C.M.); (V.P.); (T.T.); (F.X.M.)
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, 4200-465 Porto, Portugal
| | - Vânia Pôjo
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; (C.M.); (V.P.); (T.T.); (F.X.M.)
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, 4200-465 Porto, Portugal
| | - Tânia Tavares
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; (C.M.); (V.P.); (T.T.); (F.X.M.)
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, 4200-465 Porto, Portugal
| | - José C. M. Pires
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; (C.M.); (V.P.); (T.T.); (F.X.M.)
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, 4200-465 Porto, Portugal
| | - Francisco Xavier Malcata
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; (C.M.); (V.P.); (T.T.); (F.X.M.)
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, 4200-465 Porto, Portugal
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Gao L, Qin Y, Zhou X, Jin W, He Z, Li X, Wang Q. Microalgae as future food: Rich nutrients, safety, production costs and environmental effects. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172167. [PMID: 38580118 DOI: 10.1016/j.scitotenv.2024.172167] [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: 01/17/2024] [Revised: 03/31/2024] [Accepted: 03/31/2024] [Indexed: 04/07/2024]
Abstract
The improvement of food security and nutrition has attracted wide attention, and microalgae as the most promising food source are being further explored. This paper comprehensively introduces basic and functional nutrients rich in microalgae by elaborated tables incorporating a wide variety of studies and summarizes factors influencing their accumulation effects. Subsequently, multiple comparisons of nutrients were conducted, indicating that microalgae have a high protein content. Moreover, controllable production costs and environmental friendliness prompt microalgae into the list that contains more promising and reliable future food. However, microalgae and -based foods approved and sold are limited strictly, showing that safety is a key factor affecting dietary consideration. Notably, sensory profiles and ingredient clarity play an important role in improving the acceptance of microalgae-based foods. Finally, based on the bottleneck in the microalgae food industry, suggestions for its future development were discussed.
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Affiliation(s)
- Le Gao
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China; Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China; Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Yujia Qin
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China; Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Xu Zhou
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China; Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
| | - Wenbiao Jin
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China; Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Zhongqi He
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China; Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Xuan Li
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Qilin Wang
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia
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Liu H, Yu S, Liu B, Xiang S, Jiang M, Yang F, Tan W, Zhou J, Xiao M, Li X, Richardson JJ, Lin W, Zhou J. Space-Efficient 3D Microalgae Farming with Optimized Resource Utilization for Regenerative Food. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2401172. [PMID: 38483347 DOI: 10.1002/adma.202401172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/07/2024] [Indexed: 03/23/2024]
Abstract
Photosynthetic microalgae produce valuable metabolites and are a source of sustainable food that supports life without compromising arable land. However, the light self-shading, excessive water supply, and insufficient space utilization in microalgae farming have limited its potential in the inland areas most in need of regenerative food solutions. Herein, this work develops a 3D polysaccharide-based hydrogel scaffold for vertically farming microalgae without needing liquid media. This liquid-free strategy is compatible with diverse microalgal species and enables the design of living microalgal frameworks with customizable architectures that enhance light and water utilization. This approach significantly increases microalgae yield per unit water consumption, with an 8.8-fold increase compared to traditional methods. Furthermore, the dehydrated hydrogels demonstrate a reduced size and weight (≈70% reduction), but readily recover their vitality upon rehydration. Importantly, valuable natural products can be produced in this system including proteins, carbohydrates, lipids, and carotenoids. This study streamlines microalgae regenerative farming for low-carbon biomanufacturing by minimizing light self-shading, relieving water supply, and reducing physical footprints, and democratizing access to efficient aquatic food production.
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Affiliation(s)
- Hai Liu
- College of Biomass Science and Engineering, Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, 610065, China
| | - Siqin Yu
- Department of Energy Science and Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Bin Liu
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Shenzhen Key Laboratory of Food Nutrition and Health, Institute for Advanced Study, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Shuhong Xiang
- College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Minwen Jiang
- College of Biomass Science and Engineering, Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, 610065, China
| | - Fan Yang
- College of Biomass Science and Engineering, Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, 610065, China
| | - Weiwei Tan
- College of Biomass Science and Engineering, Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, 610065, China
| | - Jianfei Zhou
- College of Biomass Science and Engineering, Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, 610065, China
- Research Institute of Leather and Footwear Industry of Wenzhou, Wenzhou, 325000, China
| | - Ming Xiao
- College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Xiaojie Li
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Shenzhen Key Laboratory of Food Nutrition and Health, Institute for Advanced Study, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Joseph J Richardson
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Wei Lin
- College of Biomass Science and Engineering, Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, 610065, China
| | - Jiajing Zhou
- College of Biomass Science and Engineering, Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, 610065, China
- Research Institute of Leather and Footwear Industry of Wenzhou, Wenzhou, 325000, China
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8
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Tran DT, Nguyen NK, Yadav AS, Chuang A, Burford M, Ooi CH, Sreejith KR, Nguyen NT. Calcium alginate elastic capsules for microalgal cultivation. RSC Adv 2024; 14:15441-15448. [PMID: 38741954 PMCID: PMC11090016 DOI: 10.1039/d4ra00519h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 05/07/2024] [Indexed: 05/16/2024] Open
Abstract
Calcium alginate elastic capsules with a core-shell structure are versatile spherical solid beads that can be produced in large quantities using various techniques. This type of capsule is a promising platform for cell culture applications, owing to its mechanical elasticity and transparency. This paper reports the production of calcium alginate capsules with high consistency, and for the first time, demonstrates the feasibility of the capsules for microalgal cultivation. Cell growth analysis reveals that the vibrationally-shaken calcium alginate elastic capsule platform yielded a higher maximum cell number (4.86 × 108 cells per mL) during the cultivation period than the control solution platforms. Aquafeed and food supplements for humans are the targeted applications of this novel platform.
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Affiliation(s)
- Du Tuan Tran
- Queensland Micro- and Nanotechnology Centre, Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
| | - Nhat-Khuong Nguyen
- Queensland Micro- and Nanotechnology Centre, Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
| | - Ajeet Singh Yadav
- Queensland Micro- and Nanotechnology Centre, Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
| | - Ann Chuang
- Australian Rivers Institute, Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
| | - Michele Burford
- Australian Rivers Institute, Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
| | - Chin Hong Ooi
- Queensland Micro- and Nanotechnology Centre, Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
| | - Kamalalayam Rajan Sreejith
- Queensland Micro- and Nanotechnology Centre, Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
| | - Nam-Trung Nguyen
- Queensland Micro- and Nanotechnology Centre, Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
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9
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Dhandwal A, Bashir O, Malik T, Salve RV, Dash KK, Amin T, Shams R, Wani AW, Shah YA. Sustainable microalgal biomass as a potential functional food and its applications in food industry: a comprehensive review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-33431-6. [PMID: 38710849 DOI: 10.1007/s11356-024-33431-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 04/18/2024] [Indexed: 05/08/2024]
Abstract
Microalgae (MA) are the most abundant seaweeds with high nutritional properties. They are accepted as potential biocatalysts for the bioremediation of wastewater. They are widely used in food, feed, and biofuel industries and can potentially be food for future generations. MA-based purification of wastewater technology could be a universal alternative solution for the recovery of resources from wastewater for low-cost biomass feedstock for industry. They provide a wide range of functional components, viz. omega-3 fatty acids, along with a plenteous number of pigments such as ß-carotene, astaxanthin, lutein, phycocyanin, and chlorophyll, which are used extensively as food additives and nutraceuticals. Further, proteins, lipids, vitamins, and carbohydrates are described as nutritional characteristics in MA. They are investigated as single-cell protein, thickening/stabilizing agents, and pigment sources in the food industry. The review emphasizes the production and extraction of nutritional and functional components of algal biomass and the role of microalgal polysaccharides in digestion and nutritional absorption in the gastrointestinal tract. Further, the use of MA in the food industry was also investigated along with their potential therapeutic applications.
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Affiliation(s)
- Akhil Dhandwal
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab, India
| | - Omar Bashir
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab, India
| | - Tanu Malik
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab, India
| | - Rahul Vinayak Salve
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab, India
| | - Kshirod Kumar Dash
- Department of Food Processing Technology, Ghani Khan Choudhury Institute of Engineering and Technology, Malda, West Bengal, India.
| | - Tawheed Amin
- Division of Food Science and Technology, Sher-E-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, Jammu and Kashmir, India
| | - Rafeeya Shams
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab, India
| | - Ab Waheed Wani
- Department of Horticulture, Lovely Professional University, Phagwara, Punjab, India
| | - Yasir Abbas Shah
- Natural and Medical Sciences Research Centre, University of Nizwa, Nizwa, Oman
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10
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Vu HP, Kuzhiumparambil U, Cai Z, Wang Q, Ralph PJ, Nghiem LD. Enhanced biomethane production from Scenedesmus sp. using polymer harvesting and expired COVID-19 disinfectant for pretreatment. CHEMOSPHERE 2024; 356:141869. [PMID: 38575081 DOI: 10.1016/j.chemosphere.2024.141869] [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: 01/16/2024] [Revised: 03/17/2024] [Accepted: 03/29/2024] [Indexed: 04/06/2024]
Abstract
This study evaluates the repurposing of expired isopropanol (IPA) COVID-19 disinfectant (64% w/w) to pretreat algal biomass for enhancing methane (CH4) yield. The impact of harvesting methods (centrifugation and polymer flocculation) and microwave pretreatment on CH4 production from Scenedesmus sp. microalgal biomass were also investigated. Results show minimal impact of harvesting methods on the CH4 yield, with wet centrifuged and polymer-harvested biomass exhibiting comparable and low CH4 production at 66 and 74 L/kgvolatile solid, respectively. However, microalgae drying significantly increased CH4 yield compared to wet biomass, attributed to cell shrinkage and enhanced digestibility. Consequently, microwave and IPA pretreatment significantly enhanced CH4 production when applied to dried microalgae, yielding a 135% and 212% increase, respectively, compared to non-pretreated wet biomass. These findings underscore the advantage of using dried Scenedesmus sp. over wet biomass and highlight the synergistic effect of combining oven drying with IPA treatment to boost CH4 production whilst reducing COVID-19 waste.
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Affiliation(s)
- Hang P Vu
- Center for Technology in Water and Wastewater, University of Technology Sydney, Ultimo, NSW, 2007, Australia.
| | | | - Zhengqing Cai
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, East China University of Science and Technology, Shanghai, 200237, China.
| | - Qilin Wang
- Center for Technology in Water and Wastewater, University of Technology Sydney, Ultimo, NSW, 2007, Australia.
| | - Peter J Ralph
- Climate Change Cluster, University of Technology Sydney, Ultimo, NSW, 2007, Australia.
| | - Long D Nghiem
- Center for Technology in Water and Wastewater, University of Technology Sydney, Ultimo, NSW, 2007, Australia.
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11
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Pereira ASADP, Silva TAD, Magalhães IB, Ferreira J, Braga MQ, Lorentz JF, Assemany PP, Couto EDAD, Calijuri ML. Biocompounds from wastewater-grown microalgae: a review of emerging cultivation and harvesting technologies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 920:170918. [PMID: 38354809 DOI: 10.1016/j.scitotenv.2024.170918] [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: 11/29/2023] [Revised: 01/22/2024] [Accepted: 02/10/2024] [Indexed: 02/16/2024]
Abstract
Microalgae biomass has attracted attention as a feedstock to produce biofuels, biofertilizers, and pigments. However, the high production cost associated with cultivation and separation stages is a challenge for the microalgae biotechnology application on a large scale. A promising approach to overcome the technical-economic limitations of microalgae production is using wastewater as a nutrient and water source for cultivation. This strategy reduces cultivation costs and contributes to valorizing sanitation resources. Therefore, this article presents a comprehensive literature review on the status of microalgae biomass cultivation in wastewater, focusing on production strategies and the accumulation of valuable compounds such as lipids, carbohydrates, proteins, fatty acids, and pigments. This review also covers emerging techniques for harvesting microalgae biomass cultivated in wastewater, discussing the advantages and limitations of the process, as well as pointing out the main research opportunities. The novelty of the study lies in providing a detailed analysis of state-of-the-art and potential advances in the cultivation and harvesting of microalgae, with a special focus on the use of wastewater and implementing innovative strategies to enhance productivity and the accumulation of compounds. In this context, the work aims to guide future research concerning emerging technologies in the field, emphasizing the importance of innovative approaches in cultivating and harvesting microalgae for advancing knowledge and practical applications in this area.
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Affiliation(s)
| | | | - Iara Barbosa Magalhães
- Federal University of Viçosa, Department of Civil Engineering, Viçosa, Minas Gerais, Brazil.
| | - Jessica Ferreira
- Federal University of Viçosa, Department of Civil Engineering, Viçosa, Minas Gerais, Brazil.
| | - Matheus Quintão Braga
- Federal University of Viçosa, Department of Civil Engineering, Viçosa, Minas Gerais, Brazil.
| | | | - Paula Peixoto Assemany
- Federal University of Lavras, Department of Environmental Engineering, Lavras, Minas Gerais, Brazil.
| | | | - Maria Lúcia Calijuri
- Federal University of Viçosa, Department of Civil Engineering, Viçosa, Minas Gerais, Brazil.
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12
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Soudagar MEM, Kiong TS, Jathar L, Nik Ghazali NN, Ramesh S, Awasarmol U, Ong HC. Perspectives on cultivation and harvesting technologies of microalgae, towards environmental sustainability and life cycle analysis. CHEMOSPHERE 2024; 353:141540. [PMID: 38423144 DOI: 10.1016/j.chemosphere.2024.141540] [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: 08/09/2023] [Revised: 12/18/2023] [Accepted: 02/23/2024] [Indexed: 03/02/2024]
Abstract
The development of algae is seen as a potential and ecologically sound approach to address the increasing demands in multiple sectors. However, successful implementation of processes is highly dependent on effective growing and harvesting methods. The present study provides a complete examination of contemporary techniques employed in the production and harvesting of algae, with a particular emphasis on their sustainability. The review begins by examining several culture strategies, encompassing open ponds, closed photobioreactors, and raceway ponds. The analysis of each method is conducted in a systematic manner, with a particular focus on highlighting their advantages, limitations, and potential for expansion. This approach ensures that the conversation is in line with the objectives of sustainability. Moreover, this study explores essential elements of algae harvesting, including the processes of cell separation, dewatering, and biomass extraction. Traditional methods such as centrifugation, filtration, and sedimentation are examined in conjunction with novel, environmentally concerned strategies including flocculation, electro-coagulation, and membrane filtration. It evaluates the impacts on the environment that are caused by the cultivation process, including the usage of water and land, the use of energy, the production of carbon dioxide, and the runoff of nutrients. Furthermore, this study presents a thorough examination of the current body of research pertaining to Life Cycle Analysis (LCA) studies, presenting a perspective that emphasizes sustainability in the context of algae harvesting systems. In conclusion, the analysis ends up with an examination ahead at potential areas for future study in the cultivation and harvesting of algae. This review is an essential guide for scientists, policymakers, and industry experts associated with the advancement and implementation of algae-based technologies.
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Affiliation(s)
- Manzoore Elahi M Soudagar
- Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, Malaysia; Department of Mechanical Engineering, Graphic Era (Deemed to be University), Dehradun, Uttarakhand - 248002, India; Environmental and Atmospheric Sciences Research Group, Scientific Research Center, Al-Ayen University, Thi-Qar, Nasiriyah, 64001, Iraq.
| | - Tiong Sieh Kiong
- Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, Malaysia.
| | - Laxmikant Jathar
- Department of Mechanical Engineering, Army Institute of Technology, Pune, 411015, India.
| | - Nik Nazri Nik Ghazali
- Department of Mechanical Engineering, Faculty of Engineering, University Malaya, 50603 Kuala Lumpur, Malaysia.
| | - S Ramesh
- Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, Malaysia; Department of Mechanical Engineering, Faculty of Engineering, University Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Umesh Awasarmol
- Department of Mechanical Engineering, Army Institute of Technology, Pune, 411015, India.
| | - Hwai Chyuan Ong
- Department of Engineering, School of Engineering and Technology, Sunway University, Jalan Universiti, Bandar Sunway, 47500, Selangor, Malaysia.
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13
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Lee C, Han SI, Na H, Kim Z, Ahn JW, Oh B, Kim HS. Comprehensive understanding of the mutant 'giant' Arthrospira platensis developed via ultraviolet mutagenesis. FRONTIERS IN PLANT SCIENCE 2024; 15:1369976. [PMID: 38567133 PMCID: PMC10985164 DOI: 10.3389/fpls.2024.1369976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 03/07/2024] [Indexed: 04/04/2024]
Abstract
Introduction Cyanobacteria are typically of a size that can be observed under a microscope. Here, we present cyanobacteria of a size that can be observed with the naked eye. Arthrospira platensis NCB002 strain showed differentiated morphological characteristics compared to previously reported Arthrospira spp. Methods Arthrospira platensis NCB002 was obtained by the UV irradiation of Arthrospira sp. NCB001, which was isolated from freshwater and owned by NCell Co., Ltd. A. platensis NIES-39 was obtained from the National Institute for Environmental Studies (Tsukuba, Japan). We used various analytical techniques to determine its overall characteristics. Results and discussion The draft genome of strain NCB002 consists of five contigs comprising 6,864,973 bp with a G+C content of 44.3 mol%. The strain NCB002 had an average length of 11.69 ± 1.35 mm and a maximum of 15.15 mm, which is 23.4-50.5 times longer than the length (0.3-0.5 mm) of previously known Arthrospira spp., allowing it to be harvested using a thin sieve. Transcriptome analysis revealed that these morphological differences resulted from changes in cell wall formation mechanisms and increased cell division. Our results show that NCB002 has outstanding industrial value and provides a comprehensive understanding of it.
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Affiliation(s)
- Changsu Lee
- Bio Division, NCell. Co., Ltd., Seoul, Republic of Korea
| | - Sang-Il Han
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Republic of Korea
| | - Ho Na
- Bio Division, NCell. Co., Ltd., Seoul, Republic of Korea
| | - Zun Kim
- Bio Division, NCell. Co., Ltd., Seoul, Republic of Korea
| | - Joon Woo Ahn
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Republic of Korea
| | - Byeolnim Oh
- Department of Electronic Engineering, Kwangwoon University, Seoul, Republic of Korea
| | - Hyun Soo Kim
- Department of Electronic Engineering, Kwangwoon University, Seoul, Republic of Korea
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14
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Çelekli A, Özbal B, Bozkurt H. Challenges in Functional Food Products with the Incorporation of Some Microalgae. Foods 2024; 13:725. [PMID: 38472838 DOI: 10.3390/foods13050725] [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: 11/15/2023] [Revised: 12/07/2023] [Accepted: 02/23/2024] [Indexed: 03/14/2024] Open
Abstract
Much attention has been given to the use of microalgae to produce functional foods that have valuable bioactive chemicals, including essential amino acids, polyunsaturated fatty acids, vitamins, carotenoids, fiber, and minerals. Microalgal biomasses are increasingly being used to improve the nutritional values of foods because of their unique nutrient compositions that are beneficial to human health. Their protein content and amino acid composition are the most important components. The microalgal biomass used in the therapeutic supplement industry is dominated by bio-compounds like astaxanthin, β-carotene, polyunsaturated fatty acids like eicosapentaenoic acid and docosahexaenoic acid, and polysaccharides such as β-glucan. The popularity of microalgal supplements is growing because of the health benefits of their bioactive substances. Moreover, some microalgae, such as Dunaliella, Arthrospira (Spirulina), Chlorella, and Haematococcus, are commonly used microalgal species in functional food production. The incorporation of microalgal biomass leads not only to enhanced nutritional value but also to improved sensory quality of food products without altering their cooking or textural characteristics. Microalgae, because of their eco-friendly potential, have emerged as one of the most promising and novel sources of new functional foods. This study reviews some recent and relevant works, as well as the current challenges for future research, using different methods of chemical modification in foods with the addition of a few commercial algae to allow their use in nutritional and sensory areas. It can be concluded that the production of functional foods through the use of microalgae in foods has become an important issue.
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Affiliation(s)
- Abuzer Çelekli
- Department of Biology, Faculty of Art and Science, Gaziantep University, 27310 Gaziantep, Turkey
| | - Buket Özbal
- Department of Biology, Faculty of Art and Science, Gaziantep University, 27310 Gaziantep, Turkey
| | - Hüseyin Bozkurt
- Department of Food Engineering, Faculty of Engineering, University of Gaziantep, 27310 Gaziantep, Turkey
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15
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Kong W, Kong J, Feng S, Yang T, Xu L, Shen B, Bi Y, Lyu H. Cultivation of microalgae-bacteria consortium by waste gas-waste water to achieve CO 2 fixation, wastewater purification and bioproducts production. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2024; 17:26. [PMID: 38360745 PMCID: PMC10870688 DOI: 10.1186/s13068-023-02409-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 10/10/2023] [Indexed: 02/17/2024]
Abstract
The cultivation of microalgae and microalgae-bacteria consortia provide a potential efficient strategy to fix CO2 from waste gas, treat wastewater and produce value-added products subsequently. This paper reviews recent developments in CO2 fixation and wastewater treatment by single microalgae, mixed microalgae and microalgae-bacteria consortia, as well as compares and summarizes the differences in utilizing different microorganisms from different aspects. Compared to monoculture of microalgae, a mixed microalgae and microalgae-bacteria consortium may mitigate environmental risk, obtain high biomass, and improve the efficiency of nutrient removal. The applied microalgae include Chlorella sp., Scenedesmus sp., Pediastrum sp., and Phormidium sp. among others, and most strains belong to Chlorophyta and Cyanophyta. The bacteria in microalgae-bacteria consortia are mainly from activated sludge and specific sewage sources. Bioengineer in CBB cycle in microalgae cells provide effective strategy to achieve improvement of CO2 fixation or a high yield of high-value products. The mechanisms of CO2 fixation and nutrient removal by different microbial systems are also explored and concluded, the importance of microalgae in the technology is proven. After cultivation, microalgae biomass can be harvested through physical, chemical, biological and magnetic separation methods and used to produce high-value by-products, such as biofuel, feed, food, biochar, fertilizer, and pharmaceutical bio-compounds. Although this technology has brought many benefits, some challenging obstacles and limitation remain for industrialization and commercializing.
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Affiliation(s)
- Wenwen Kong
- Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, People's Republic of China
- Hebei Engineering Research Center of Pollution Control in Power System, Hebei University of Technology, Tianjin, 300401, People's Republic of China
| | - Jia Kong
- Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, People's Republic of China
- Hebei Engineering Research Center of Pollution Control in Power System, Hebei University of Technology, Tianjin, 300401, People's Republic of China
| | - Shuo Feng
- Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, People's Republic of China
- Hebei Engineering Research Center of Pollution Control in Power System, Hebei University of Technology, Tianjin, 300401, People's Republic of China
| | - TianTian Yang
- Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, People's Republic of China
- Hebei Engineering Research Center of Pollution Control in Power System, Hebei University of Technology, Tianjin, 300401, People's Republic of China
| | - Lianfei Xu
- Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, People's Republic of China
- Hebei Engineering Research Center of Pollution Control in Power System, Hebei University of Technology, Tianjin, 300401, People's Republic of China
| | - Boxiong Shen
- Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, People's Republic of China.
- Hebei Engineering Research Center of Pollution Control in Power System, Hebei University of Technology, Tianjin, 300401, People's Republic of China.
| | - Yonghong Bi
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, People's Republic of China.
| | - Honghong Lyu
- Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, People's Republic of China.
- Hebei Engineering Research Center of Pollution Control in Power System, Hebei University of Technology, Tianjin, 300401, People's Republic of China.
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16
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Han SF, Jin W, Qu F, Hanelt D, Abomohra A. Integrated municipal wastewater treatment and lipid accumulation by a self-flocculating/floating microalga Limnothrix sp. BIORESOURCE TECHNOLOGY 2024; 394:130165. [PMID: 38072079 DOI: 10.1016/j.biortech.2023.130165] [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: 11/13/2023] [Revised: 12/05/2023] [Accepted: 12/05/2023] [Indexed: 02/04/2024]
Abstract
The present study evaluated the growth, self-flocculation, lipid content, and pollutants removal by Limnothrix sp. BASMWW-9 isolated from municipal wastewater treatment system and cultivated in municipal wastewater. The biomass yield and lipid content after 6 days of cultivation were 1.07 g dw/L and 27.34 %dw, respectively. In addition, its self-flocculating ability reached up to 90 % after harvesting time of 180 min. Moreover, COD,NH3-N, TN, and TP removalefficiencies were 71.65 %, 81.89 %, 74.64 %, and 80.16 %, respectively. The self-flocculation performance of Limnothrix sp. was greatly associated to its morphology and production of extracellular polymeric substances (EPS), with significant positive impact of the high calcium and magnesium content in municipal wastewater. Interestingly, blue light irradiation during harvest enhanced the aggregation and floc formation as a floating biomat, which was attributed to enhanced polysaccharides production. This study provides innovative harvest method for Limnothrix sp. BASMWW-9 cultivated in wastewater using blue light for enhanced lipid recovery.
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Affiliation(s)
- Song-Fang Han
- School of Chemistry and Chemical Engineering, Zhoukou Normal University, Zhoukou 466001, China
| | - Wenbiao Jin
- Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Fanqi Qu
- Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Dieter Hanelt
- Aquatic Ecophysiology and Phycology, Institute of Plant Science and Microbiology, University of Hamburg, Hamburg 22609, Germany
| | - Abdelfatah Abomohra
- Aquatic Ecophysiology and Phycology, Institute of Plant Science and Microbiology, University of Hamburg, Hamburg 22609, Germany.
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17
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Tseytlin IN, Antrim AK, Gong P. Nanoparticles for Mitigation of Harmful Cyanobacterial Blooms. Toxins (Basel) 2024; 16:41. [PMID: 38251256 PMCID: PMC10819728 DOI: 10.3390/toxins16010041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 01/11/2024] [Accepted: 01/11/2024] [Indexed: 01/23/2024] Open
Abstract
With the rapid advancement of nanotechnology and its widespread applications, increasing amounts of manufactured and natural nanoparticles (NPs) have been tested for their potential utilization in treating harmful cyanobacterial blooms (HCBs). NPs can be used as a photocatalyst, algaecide, adsorbent, flocculant, or coagulant. The primary mechanisms explored for NPs to mitigate HCBs include photocatalysis, metal ion-induced cytotoxicity, physical disruption of the cell membrane, light-shielding, flocculation/coagulation/sedimentation of cyanobacterial cells, and the removal of phosphorus (P) and cyanotoxins from bloom water by adsorption. As an emerging and promising chemical/physical approach for HCB mitigation, versatile NP-based technologies offer great advantages, such as being environmentally benign, cost-effective, highly efficient, recyclable, and adaptable. The challenges we face include cost reduction, scalability, and impacts on non-target species co-inhabiting in the same environment. Further efforts are required to scale up to real-world operations through developing more efficient, recoverable, reusable, and deployable NP-based lattices or materials that are adaptable to bloom events in different water bodies of different sizes, such as reservoirs, lakes, rivers, and marine environments.
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Affiliation(s)
- Ilana N. Tseytlin
- Oak Ridge Institute for Science and Education, 1299 Bethel Valley Road, Oak Ridge, TN 37830, USA;
- School of Pharmacy, University of Pittsburgh, 3501 Terrace St., Pittsburgh, PA 15261, USA
| | - Anna K. Antrim
- Environmental Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA;
| | - Ping Gong
- Environmental Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA;
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18
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Mugnai S, Derossi N, Hendlin Y. Algae communication, conspecific and interspecific: the concepts of phycosphere and algal-bacteria consortia in a photobioreactor (PBR). PLANT SIGNALING & BEHAVIOR 2023; 18:2148371. [PMID: 36934349 PMCID: PMC10026891 DOI: 10.1080/15592324.2022.2148371] [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: 08/24/2022] [Revised: 11/12/2022] [Accepted: 11/12/2022] [Indexed: 06/18/2023]
Abstract
Microalgae in the wild often form consortia with other species promoting their own health and resource foraging opportunities. The recent application of microalgae cultivation and deployment in commercial photobioreactors (PBR) so far has focussed on single species of algae, resulting in multi-species consortia being largely unexplored. Reviewing the current status of PBR ecological habitat, this article argues in favor of further investigation into algal communication with conspecifics and interspecifics, including other strains of microalgae and bacteria. These mutualistic species form the 'phycosphere': the microenvironment surrounding microalgal cells, potentiating the production of certain metabolites through biochemical interaction with cohabitating microorganisms. A better understanding of the phycosphere could lead to novel PBR configurations, capable of incorporating algal-microbial consortia, potentially proving more effective than single-species algal systems.
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Affiliation(s)
| | | | - Yogi Hendlin
- Erasmus School of Philosophy, Erasmus University, Rotterdam, Netherlands
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19
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de Morais EG, Sampaio ICF, Gonzalez-Flo E, Ferrer I, Uggetti E, García J. Microalgae harvesting for wastewater treatment and resources recovery: A review. N Biotechnol 2023; 78:84-94. [PMID: 37820831 DOI: 10.1016/j.nbt.2023.10.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 09/21/2023] [Accepted: 10/07/2023] [Indexed: 10/13/2023]
Abstract
Microalgae-based wastewater treatment has been conceived to obtain reclaimed water and produce microalgal biomass for bio-based products and biofuels generation. However, microalgal biomass harvesting is challenging and expensive, hence one of the main bottlenecks for full-scale implementation. Finding an integrated approach that covers concepts of engineering, green chemistry and the application of microbial anabolism driven towards the harvesting processes, is mandatory for the widespread establishment of full-scale microalgae wastewater treatment plants. By using nature-based substances and applying concepts of chemical functionalization in already established harvesting methods, the costs of harvesting processes could be reduced while preventing microalgae biomass contamination. Moreover, microalgae produced during wastewater treatment have unique culture characteristics, such as the consortia, which are primarily composed of microalgae and bacteria, that should be accounted for prior to downstream processing. The aim of this review is to examine recent advances in microalgal biomass harvesting and recovery in wastewater treatment systems, considering the impact of consortia variability. The costs of available harvesting technologies, such as coagulation/flocculation, coupled to sedimentation and differential air flotation, are provided. Additionally, promising technologies are discussed, including autoflocculation, bioflocculation, new filtration materials, nanotechnology, microfluidic and magnetic methods.
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Affiliation(s)
- Etiele Greque de Morais
- GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya, BarcelonaTech, c/ Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain
| | - Igor Carvalho Fontes Sampaio
- CPID - Espírito Santo's Center for Research, Innovation and Development, Eliezer Batista hill, Jardim América, 29140-130 Cariacica, Espírito Santo, Brazil
| | - Eva Gonzalez-Flo
- GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya, BarcelonaTech, c/ Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain; GEMMA-Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Escola d'Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya-BarcelonaTech, Av. Eduard Maristany 16, Building C5.1, E-08019 Barcelona, Spain
| | - Ivet Ferrer
- GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya, BarcelonaTech, c/ Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain
| | - Enrica Uggetti
- GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya, BarcelonaTech, c/ Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain
| | - Joan García
- GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya, BarcelonaTech, c/ Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain.
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20
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Streicher M, Boyko V, Blanazs A. Ultra-High-Molecular-Weight, Narrow-Polydispersity Polyacrylamides Synthesized Using Photoiniferter Polymerization to Generate High-Performance Flocculants. ACS APPLIED MATERIALS & INTERFACES 2023; 15:59044-59054. [PMID: 38059923 DOI: 10.1021/acsami.3c14483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Ultra-high-molecular-weight, water-soluble polyelectrolytes are commonly employed as flocculants for solid-liquid separation via colloidal destabilization, enabling the rapid and efficient removal of particulate matter from wastewater streams. A drive toward more sustainable and less polluting industrial practices, coupled with the desire to reduce freshwater usage and improve closed-loop systems, demands the development of flocculants with ever-higher dewatering dose performance. Herein, the use of trithiocarbonate-mediated reversible addition-fragmentation chain transfer (RAFT) polymerization under either blue LED (λmax = 470 nm) or UV (λmax = 365 nm) irradiation, known as photoiniferter polymerization, was successfully utilized to generate ultra-high-molecular-weight (Mn > 1,000,000 g mol-1) polyelectrolyte copolymer flocculants with narrow molecular weight distributions (Mw/Mn < 1.2). Cationic and anionic polyelectrolyte flocculants were synthesized containing various monomer compositions of acrylamide (AM), dimethylacrylamide (DMA), 3-(acryloyloxyethyll)trimethylammonium chloride (DMAEAq), 3-(acrylamidopropyl)trimethylammonium chloride (APTAC), sodium acrylate (NaAA), and sodium 2-(acrylamido)-2-methylpropylsulfonate (NaATBS) with high monomer conversion using simple experimental apparatus. The narrow molecular weight distribution cationic polyelectrolytes showed improved flocculation efficiency in the clarification of kaolin suspensions of up to 50% in comparison to a broad polydispersity (Mw/Mn > 5.0) commercial benchmark with an equivalent number average molecular weight. The improved performance of the narrow-polydispersity copolymers is attributed to the reduction in the content of the lower-molecular-weight polymer chains, which impart lower flocculation performance.
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Affiliation(s)
| | | | - Adam Blanazs
- BASF SE, Carl-Bosch-Straße 38, 67056 Ludwigshafen, Germany
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21
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Huang KX, Vadiveloo A, Zhong H, Li C, Gao F. High-efficiency harvesting of microalgae enabled by chitosan-coated magnetic biochar. BIORESOURCE TECHNOLOGY 2023; 390:129860. [PMID: 37838019 DOI: 10.1016/j.biortech.2023.129860] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/08/2023] [Accepted: 10/09/2023] [Indexed: 10/16/2023]
Abstract
Magnetic flocculation which uses magnetic particles is an emerging technology for harvesting microalgae. However, the potential modification and use of cost-effective and sustainable biochar-based composites is still in its infancy. As such, this study aimed to compare the harvesting efficiency of peanut shell biochar (BC), biochar modified with FeCl3 (FeBC), and biochar dual-modified with chitosan and FeCl3 (CTS@FeBC) on microalgae. The results showed CTS@FeBC exhibited significantly higher microalgae harvesting efficiency compared to BC and FeBC. Both acidic and alkaline conditions were favorable for harvesting microalgae by CTS@FeBC. At pH 2 and pH 12, the harvesting efficiency reached 96.9% and 98.8% within 2 min, respectively. The primary adsorption mechanism of CTS@FeBC on microalgae mainly involved electrostatic attraction and sweeping flocculation. Furthermore, CTS@FeBC also showed good biocompatibility and reusability. This study clearly demonstrated a promising technique for microalgae harvesting using biochar-based materials, offering valuable insights and potential applications in sustainable bioresource management.
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Affiliation(s)
- Kai-Xuan Huang
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316000, China; Eastern Institute of Technology, Ningbo 315200, China
| | - Ashiwin Vadiveloo
- Centre for Water, Energy and Waste, Harry Butler Institute, Murdoch University, Murdoch, WA 6150, Australia
| | - Hua Zhong
- Eastern Institute of Technology, Ningbo 315200, China
| | - Chen Li
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316000, China
| | - Feng Gao
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316000, China.
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22
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Plaza-Rojas CA, Amaya-Orozco NA, Rivera-Hoyos CM, Montaña-Lara JS, Páez-Morales A, Salcedo-Reyes JC, Castillo-Carvajal LC, Martínez-Urrútia W, Díaz-Ariza LA, Pedroza-Rodríguez AM. Use of biochar and a post-coagulation effluent as an adsorbent of malachite green, beneficial bacteria carrier, and seedling substrate for plants belonging to the poaceae family. 3 Biotech 2023; 13:386. [PMID: 37928437 PMCID: PMC10624780 DOI: 10.1007/s13205-023-03766-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 09/03/2023] [Indexed: 11/07/2023] Open
Abstract
Wastewater treatment plants produce solid and semi-solid sludge, which treatment minimises secondary environmental pollution because of wastewater treatment and obtaining new bioproducts. For this reason, in this paper, the co-pyrolysis of biogenic biomasses recovered from a biological reactor with immobilised fungal and bacterial biomass and a tertiary reactor with Chlorella sp. used for dye-contaminated wastewater treatment was carried out. Biogenic biomasses mixed with pine bark allowed the production and characterisation of two types of biochar. The raw material and biochar were on the "in vitro" germination of Lolium sp. seeds, followed by adsorption studies for malachite green (MG) dye using the raw material and the biochar. Results showed that using 60 mg L-1 of a cationic coagulant at pH 6.5 allowed for the recovery of more than 90% of the microalgae after 50 min of processing. Two biochar resulted: BC300, at pH 5.08 ± 0.08 and BC500, at pH 6.78 ± 0.01. The raw material and both biochars were co-inoculated with growth-promoting bacteria; their viabilities ranged from 1.7 × 106 ± 1.0 × 101 to 7.5 × 108 ± 6.0 × 102 CFU g-1 for total heterotrophic, nitrogen-fixing and phosphate-solubilising bacteria. Re-use tests on Lolium sp. seed germination showed that with the post-coagulation effluent, the germination was 100%, while with the biochar, with and without beneficial bacteria, the germination was 98 and 99%, respectively. Finally, BC500 adsorbed the highest percentage of malachite green at pH 4.0, obtaining qecal values of 0.5249 mg g-1 (R2: 0.9875) with the pseudo-second-order model. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03766-x.
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Affiliation(s)
- Christy A. Plaza-Rojas
- Laboratorio de Microbiología Ambiental y Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7ma No 43-82, Edifício 50 Lab. 106, P.O. Box 110-23, Bogotá, DC Colombia
| | - Nelson A. Amaya-Orozco
- Laboratorio de Microbiología Ambiental y Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7ma No 43-82, Edifício 50 Lab. 106, P.O. Box 110-23, Bogotá, DC Colombia
| | - Claudia M. Rivera-Hoyos
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, P.O. Box 110-23, Bogotá, DC Colombia
| | - José S. Montaña-Lara
- Laboratorio de Microbiología Ambiental y Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7ma No 43-82, Edifício 50 Lab. 106, P.O. Box 110-23, Bogotá, DC Colombia
| | - Adriana Páez-Morales
- Laboratorio de Microbiología Ambiental y Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7ma No 43-82, Edifício 50 Lab. 106, P.O. Box 110-23, Bogotá, DC Colombia
| | - Juan Carlos Salcedo-Reyes
- Laboratorio de Películas Delgadas y Nanofotónica, Grupo de Películas Delgadas y Nanofotónica, Departamento de Física, Facultad de Ciencias, Pontificia Universidad Javeriana, P.O. Box 110-23, Bogotá, DC Colombia
| | | | - Wilmar Martínez-Urrútia
- Grupo de Diseño Avanzado, Fundación Universidad de América, P.O. Box 110-23, Bogotá, DC Colombia
| | - Lucía Ana Díaz-Ariza
- Laboratorio Asociaciones Suelo-Panta-Microorganismo, Grupo de Investigación en Agricultura Biológica, Departamento de Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, P.O. Box 110-23, Bogotá, DC Colombia
| | - Aura M. Pedroza-Rodríguez
- Laboratorio de Microbiología Ambiental y Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7ma No 43-82, Edifício 50 Lab. 106, P.O. Box 110-23, Bogotá, DC Colombia
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23
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Perales-Pérez Á, Macías-Sánchez MD, Ruiz J, Perales JA, Garrido-Pérez C. Process for nutrient recycling from intensive aquaculture through microalgae-bacteria consortium. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 901:165848. [PMID: 37536584 DOI: 10.1016/j.scitotenv.2023.165848] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/30/2023] [Accepted: 07/26/2023] [Indexed: 08/05/2023]
Abstract
This work studies a biological process based on a microalgae-bacteria consortium for recycling nutrients in a recirculating aquaculture system (RAS) implanted in an intensive marine aquaculture farm. Additionally, some techniques were used for microalgae biomass harvesting and tested the effectiveness of filtration by a column with multi-layer sand to reduce the solids concentrations in the effluent. The consortium was grown in photobioreactors in batch and semi-continuous operation modes using the solids concentrated stream generated in the RAS system. The semi-continuous operation showed a high percentage of TDN and TDP removal, achieving final concentrations of 1.09 ± 0.02 mg·L-1 and 0.01 ± 0.01 mg·L-1, respectively, while DOC was reduced to 3.87 ± 0.06 mg·L-1. The values of productivity 44 ± 9 mg TSS·L-1 indicated that the studied stream is a suitable culture medium for the growth of the microalgae-bacteria consortium. A combination of harvesting techniques was studied, coagulation-flocculation-settling and coagulation-flocculation-flotation. The first step was to optimise the dose of FeCl3 through the coagulation-flocculation test to pre-concentrate the biomass generated, achieving an optimal dose of 0.106 mg Fe·mg TSS-1. Then, two separation processes were applied to the stream and compared: settling and flotation. The maximum removal efficiency (90.2 ± 0.3 %) was obtained in the settling process, so the coagulation-flocculation-settling was select as the best combination of harvesting techniques. Finally, sand filtration was studied as an effluent refining process to improve solids reduction of the water obtained in the harvesting step resulting in an effluent with 17.18 ± 1.49 mg TSS·L-1. The proposed sequence process is capable of recycling nutrients from an intensive marine aquaculture farm by using these resources via transformation into microalgae biomass and generating quality effluent.
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Affiliation(s)
- Ángela Perales-Pérez
- Department of Environmental Technologies, Marine Research Institute, INMAR, Faculty of Marine and Environmental Sciences, University of Cadiz, Campus Universitario de Puerto Real, 11510 Cadiz, Spain.
| | - María D Macías-Sánchez
- Department of Chemical Engineering and Food Technology, Science Faculty, University of Cadiz, Campus Universitario de Puerto Real, 11510 Cadiz, Spain.
| | - Jesús Ruiz
- Department of Environmental Technologies, Marine Research Institute, INMAR, Faculty of Marine and Environmental Sciences, University of Cadiz, Campus Universitario de Puerto Real, 11510 Cadiz, Spain.
| | - José A Perales
- Department of Environmental Technologies, Marine Research Institute, INMAR, Faculty of Marine and Environmental Sciences, University of Cadiz, Campus Universitario de Puerto Real, 11510 Cadiz, Spain.
| | - Carmen Garrido-Pérez
- Department of Environmental Technologies, Marine Research Institute, INMAR, Faculty of Marine and Environmental Sciences, University of Cadiz, Campus Universitario de Puerto Real, 11510 Cadiz, Spain.
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24
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Yu H, Jang JY, Nam IH, Jo H, Yim GJ, Song H, Cho DW. Carbon dioxide-assisted thermochemical conversion of magnetically harvested harmful algae into syngas and metal biochar. BIORESOURCE TECHNOLOGY 2023; 387:129705. [PMID: 37611813 DOI: 10.1016/j.biortech.2023.129705] [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: 07/20/2023] [Revised: 08/16/2023] [Accepted: 08/19/2023] [Indexed: 08/25/2023]
Abstract
With rising of harmful algae blooming and toxin exposure, practical utilization of harmful algae has been developed. This work aimed to magnetically harvest Microcystis aeruginosa (MA) using iron oxides and investigate the feasibility of algae/iron oxides mixture as feedstock in pyrolytic platform to produce syngas and metal biochar. Carbon dioxide (CO2) was used as a feeding gas to enhance the production efficiency of syngas and also functioned pH controller for better MA harvesting and toxin removal. CO2 support brought multiple benefits: magnetite (Fe3O4) and maghemite (γ-Fe2O3) recovered MA in a relatively short period of time (∼1 min), the recovered biomass generated 34-fold increased carbon monoxide, and metal biochar adsorbed higher amount of toxin from MA (2.8-fold). Pyrolytic utilization of harmful algae supported by CO2 and iron oxides could be one of promising techniques for evolution of metal biochar to remove toxin, while efficiently recover biomass and enhance syngas production.
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Affiliation(s)
- Hyeonjung Yu
- Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea
| | - Jeong-Yun Jang
- Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea
| | - In-Hyun Nam
- Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea
| | - Hwanju Jo
- Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea
| | - Gil-Jae Yim
- Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea
| | - Hocheol Song
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Dong-Wan Cho
- Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea.
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25
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Liu Z, Hao N, Hou Y, Wang Q, Liu Q, Yan S, Chen F, Zhao L. Technologies for harvesting the microalgae for industrial applications: Current trends and perspectives. BIORESOURCE TECHNOLOGY 2023; 387:129631. [PMID: 37544545 DOI: 10.1016/j.biortech.2023.129631] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/02/2023] [Accepted: 08/03/2023] [Indexed: 08/08/2023]
Abstract
Microalgae are emerging as a promising source for augmenting the supply of essential products to meet global demands in an environmentally sustainable manner. Despite the potential benefits of microalgae in industry, the high energy consumption for harvesting remains a significant obstacle. This review offers a comprehensive overview of microalgae harvesting technologies and their industrial applications, with particular emphasis on the latest advances in flocculation techniques. These cutting-edge methods have been applied to biodiesel production, food and nutraceutical processing, and wastewater treatment. Large-scale harvesting is still severely impeded by the high cost despite progress has been made in laboratory studies. In the future, cost-effective microalgal harvesting will rely on efficient resource utilization, including the use of waste materials and the reuse of media and flocculants. Additionally, precise regulation of biological metabolism will be necessary to overcome algal species-related limitations through the development of extracellular polymeric substance-induced flocculation technology.
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Affiliation(s)
- Zhiyong Liu
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Nahui Hao
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China; College of Biotechnology, Tianjin University of Science and Technology, Tianjin, China
| | - Yuyong Hou
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Qing Wang
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Qingling Liu
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China; College of Biotechnology, Tianjin University of Science and Technology, Tianjin, China
| | - Suihao Yan
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China; College of Biotechnology, Tianjin University of Science and Technology, Tianjin, China
| | - Fangjian Chen
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Lei Zhao
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China.
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26
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Zafar AM, Aly Hassan A. Seawater biodesalination treatment using Phormidium keutzingianum in attached growth-packed bed continuous flow stirred tank reactor. ENVIRONMENTAL RESEARCH 2023; 236:116784. [PMID: 37517498 DOI: 10.1016/j.envres.2023.116784] [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: 04/20/2023] [Revised: 07/13/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023]
Abstract
Water scarcity is increasing worldwide due to rising population which is creating opportunities to unlock alternative green desalination techniques for seawater, such as biodesalination. Therefore, this study presents the utilization of the Phormidium keutzingianum strain in an attached growth-packed bed reactor to treat seawater in real-time in a continuous-flow stirred tank reactor for biodesalination. Two reactors were designed and developed, in which zeolites were used as the support media for the attached growth. The experiment was conducted in an open outdoor environment with a continuous air flow rate of 3 mL/min and two hydraulic retention times (HRT) of 7 and 15 d. Parameters such as the pH, chloride ion concentration, total organic carbon (TOC), and optical density were monitored regularly. The pH change was not significant in either reactor and remained within the range of 7.25-8.0. Chloride ion removal was the most crucial component of biodesalination efficiency, with d 7 removal efficiencies of approximately 40% and 32% for reactors 1 and 2, respectively. Reactor 1 exhibited a TOC reduction of 36% within the first 10 d at a HRT of 7, and when the HRT was set to 15 d, a TOC removal efficiency of 89% was achieved on d 53. For reactor 2, a TOC removal efficiency of approximately 81% was achieved on d 11 at HRT 7, and it reduced to less than 50% at an HRT of 15. The chloride ion and TOC removal phenomena were similar in both reactors. The optical density (OD) showed low measurement recordings, ranging from 0.005 to 0.01, indicating low cell detachment in the seawater effluent. Therefore, using the attached growth method for the biodesalination of seawater is feasible. Furthermore, biomass harvesting in attached growth systems is easier than that in suspension growth systems.
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Affiliation(s)
- Abdul Mannan Zafar
- Civil and Environmental Engineering Department, United Arab Emirates University, Al-Ain, 15551, Abu Dhabi, United Arab Emirates.
| | - Ashraf Aly Hassan
- Civil and Environmental Engineering Department, United Arab Emirates University, Al-Ain, 15551, Abu Dhabi, United Arab Emirates; National Water and Energy Center (NWEC), United Arab Emirates University, Al-Ain, 15551, Abu Dhabi, United Arab Emirates.
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27
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Chaos-Hernández D, Reynel-Ávila HE, Bonilla-Petriciolet A, Villalobos-Delgado FJ. Extraction methods of algae oils for the production of third generation biofuels - A review. CHEMOSPHERE 2023; 341:139856. [PMID: 37598949 DOI: 10.1016/j.chemosphere.2023.139856] [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: 03/27/2023] [Revised: 06/19/2023] [Accepted: 08/15/2023] [Indexed: 08/22/2023]
Abstract
Microalgae are the main source of third-generation biofuels because they have a lipid content of 20-70%, can be abundantly produced and do not compete in the food market besides other benefits. Biofuel production from microalgae is a promising option to contribute for the resolution of the eminent crisis of fossil energy and environmental pollution specially in the transporting sector. The choice of lipid extraction method is of relevance and associated to the algae morphology (i.e., rigid cells). Therefore, it is essential to develop suitable extraction technologies for economically viable and environment-friendly lipid recovery processes with the aim of achieving a commercial production of biofuels from this biomass. This review presents an exhaustive analysis and discussion of different methods and processes of lipid extraction from microalgae for the subsequent conversion to biodiesel. Physical methods based on the use of supercritical fluids, ultrasound and microwaves were reviewed. Chemical methods using solvents with different polarities, aside from mechanical techniques such as mechanical pressure and enzymatic methods, were also analyzed. The advantages, drawbacks, challenges and future prospects of lipid extraction methods from microalgae have been summarized to provide a wide panorama of this relevant topic for the production of economic and sustainable energy worldwide.
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Affiliation(s)
- D Chaos-Hernández
- Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos #1801, Aguascalientes, Ags., C.P. 20256, Mexico
| | - H E Reynel-Ávila
- Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos #1801, Aguascalientes, Ags., C.P. 20256, Mexico; CONACYT, Av. Insurgentes 1582 Sur, Ciudad de México, 03940, Aguascalientes, Ags, Mexico.
| | - A Bonilla-Petriciolet
- Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos #1801, Aguascalientes, Ags., C.P. 20256, Mexico
| | - F J Villalobos-Delgado
- Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos #1801, Aguascalientes, Ags., C.P. 20256, Mexico
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28
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Wang J, Tian Q, Zhou H, Kang J, Yu X, Shen L. Key metabolites and regulatory network mechanisms in co-culture of fungi and microalgae based on metabolomics analysis. BIORESOURCE TECHNOLOGY 2023; 388:129718. [PMID: 37678649 DOI: 10.1016/j.biortech.2023.129718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 08/19/2023] [Accepted: 09/04/2023] [Indexed: 09/09/2023]
Affiliation(s)
- Junjun Wang
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China
| | - Qinghua Tian
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China
| | - Hao Zhou
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Jue Kang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Xinyi Yu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Li Shen
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China.
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29
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Shitanaka T, Higa L, Bryson AE, Bertucci C, Vande Pol N, Lucker B, Khanal SK, Bonito G, Du ZY. Flocculation of oleaginous green algae with Mortierella alpina fungi. BIORESOURCE TECHNOLOGY 2023; 385:129391. [PMID: 37364649 DOI: 10.1016/j.biortech.2023.129391] [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: 05/08/2023] [Revised: 06/22/2023] [Accepted: 06/23/2023] [Indexed: 06/28/2023]
Abstract
Microalgae are promising sources of valuable bioproducts such as biofuels, food, and nutraceuticals. However, harvesting microalgae is challenging due to their small size and low biomass concentrations. To address this challenge, bio-flocculation of starchless mutants of Chlamydomonas reinhardtii (sta6/sta7) was investigated with Mortierella alpina, an oleaginous fungus with high concentrations of arachidonic acid (ARA). Triacylglycerides (TAG) reached 85 % of total lipids in sta6 and sta7 through a nitrogen regime. Scanning electron microscopy determined cell-wall attachment and extra polymeric substances (EPS) to be responsible for flocculation. An algal-fungal biomass ratio around 1:1 (three membranes) was optimal for bio-flocculation (80-85 % flocculation efficiency in 24 h). Nitrogen-deprived sta6/sta7 were flocculated with strains of M. alpina (NVP17b, NVP47, and NVP153) with aggregates exhibiting fatty acid profiles similar to C. reinhardtii, with ARA (3-10 % of total fatty acids). This study showcases M. alpina as a strong bio-flocculation candidate for microalgae and advances a mechanistic understanding of algal-fungal interaction.
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Affiliation(s)
- Ty Shitanaka
- Department of Molecular Biosciences & Bioengineering, University of Hawai'i at Mānoa, Honolulu, HI 96822, United States
| | - Lauren Higa
- Department of Molecular Biosciences & Bioengineering, University of Hawai'i at Mānoa, Honolulu, HI 96822, United States
| | - Abigail E Bryson
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, United States
| | - Conor Bertucci
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, United States
| | - Natalie Vande Pol
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, United States
| | - Ben Lucker
- Trait Biosciences, Los Alamos, NM 87544, United States
| | - Samir Kumar Khanal
- Department of Molecular Biosciences & Bioengineering, University of Hawai'i at Mānoa, Honolulu, HI 96822, United States; Department of Civil and Environmental Engineering, University of Hawai'i at Mānoa, Honolulu, HI 96822, United States
| | - Gregory Bonito
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, United States.
| | - Zhi-Yan Du
- Department of Molecular Biosciences & Bioengineering, University of Hawai'i at Mānoa, Honolulu, HI 96822, United States.
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Kolesovs S, Semjonovs P. Microalgal conversion of whey and lactose containing substrates: current state and challenges. Biodegradation 2023; 34:405-416. [PMID: 37329398 DOI: 10.1007/s10532-023-10033-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 05/30/2023] [Indexed: 06/19/2023]
Abstract
Currently dairy processing by-products, such as whey, still propose a significant threat to the environment if unproperly disposed. Microalgal bioconversion of such lactose containing substrates can be used for production of valuable microalgae-derived bio-products as well as for significant reduction of environmental risks. Moreover, it could significantly reduce microalgae biomass production costs, being a significant obstacle in commercialization of many microalgae species. This review summarizes current knowledge on the use of lactose containing substrates, e.g. whey, for the production of value-added products by microalgae, including information on producer cultures, fermentation methods and cultivation conditions, bioprocess productivity and ability of microalgal cultures to produce β-galactosidases. It can be stated, that despite several limitations lactose-containing substrates can be successfully used for both-the production of microalgal biomass and removal of high amounts of excess nutrients from the cultivation media. Moreover, co-cultivation of microalgae and other microorganisms can further increase the removal of nutrients and the production of biomass. Further investigations on lactose metabolism by microalgae, selection of suitable strains and optimisation of the cultivation process is required in order to enable large-scale microalgae production on these substrates.
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Affiliation(s)
- Sergejs Kolesovs
- Laboratory of Industrial Microbiology and Food Biotechnology, Institute of Biology, University of Latvia, Ojara Vaciesa Street 4, Riga, LV-1004, Latvia
| | - Pavels Semjonovs
- Laboratory of Industrial Microbiology and Food Biotechnology, Institute of Biology, University of Latvia, Ojara Vaciesa Street 4, Riga, LV-1004, Latvia.
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Mata MT, Cameron H, Avalos V, Riquelme C. Identification and Characterization of a Novel Microalgal Strain from the Antofagasta Coast Tetraselmis marina AC16-MESO (Chlorophyta) for Biotechnological Applications. PLANTS (BASEL, SWITZERLAND) 2023; 12:3372. [PMID: 37836113 PMCID: PMC10574681 DOI: 10.3390/plants12193372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 08/07/2023] [Accepted: 08/17/2023] [Indexed: 10/15/2023]
Abstract
The wide rocky coastline of the Antofagasta hosts an intertidal ecosystem in which the species that inhabit it are routinely exposed to a wide range of physical and chemical conditions and have therefore evolved to tolerate extremes. In the search for new species of potential biotechnological interest with adaptations to a wide range of environmental conditions, the isolation and characterization of microalgae from these ecosystems is of great interest. Here, a new microalgal strain, Tetraselmis marina AC16-MESO, is described, which was isolated from a biofilm collected on the intertidal rocks of the Antofagasta coast (23°36'57.2″ S, 70°23'33.8″ W). In addition to the morphological characterization, 18S and ITS sequence as well as ITS-2 secondary structure analysis revealed an identity of 99.76% and 100% with the species Tetraselmis marina, respectively. The analyses of the culture characteristics and biochemical content showed similarities with other strains that are frequently used in aquaculture, such as the species Tetraselmis suecica. In addition, it is tolerant of a wide range of salinities, thus allowing its culture in water of varying quality. On the other hand, added to these characteristics, the results of the improvement of the lipid content in stressful situations of salinity observed in this study, together with other antecedents such as the potential in bioremediation already published for this strain by the same research group, present a clear example of its biotechnological plasticity. It is noteworthy that this strain, due to its characteristics, allows easy collection of its biomass by decantation and, therefore, a more cost-efficient harvesting than for other microalgal strains. Therefore, this new strain of Tetraselmis marina, first report of this species in Chile, and its morphologically, molecularly and biochemically description, presents promising characteristics for its use in biotechnology and as feed for aquaculture.
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Affiliation(s)
- Maria Teresa Mata
- Department of Biotechnology, Faculty of Marine Sciences and Biological Resources, University of Antofagasta, Antofagasta 1240000, Chile
- Centro de Bioinnovación de Antofagasta (CBIA), Faculty of Marine Sciences and Biological Resources, University of Antofagasta, Antofagasta 1240000, Chile; (H.C.); (V.A.); (C.R.)
| | - Henry Cameron
- Centro de Bioinnovación de Antofagasta (CBIA), Faculty of Marine Sciences and Biological Resources, University of Antofagasta, Antofagasta 1240000, Chile; (H.C.); (V.A.); (C.R.)
| | - Vladimir Avalos
- Centro de Bioinnovación de Antofagasta (CBIA), Faculty of Marine Sciences and Biological Resources, University of Antofagasta, Antofagasta 1240000, Chile; (H.C.); (V.A.); (C.R.)
| | - Carlos Riquelme
- Centro de Bioinnovación de Antofagasta (CBIA), Faculty of Marine Sciences and Biological Resources, University of Antofagasta, Antofagasta 1240000, Chile; (H.C.); (V.A.); (C.R.)
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Qin S, Wang K, Gao F, Ge B, Cui H, Li W. Biotechnologies for bulk production of microalgal biomass: from mass cultivation to dried biomass acquisition. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:131. [PMID: 37644516 PMCID: PMC10466707 DOI: 10.1186/s13068-023-02382-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 08/11/2023] [Indexed: 08/31/2023]
Abstract
Microalgal biomass represents a sustainable bioresource for various applications, such as food, nutraceuticals, pharmaceuticals, feed, and other bio-based products. For decades, its mass production has attracted widespread attention and interest. The process of microalgal biomass production involves several techniques, mainly cultivation, harvesting, drying, and pollution control. These techniques are often designed and optimized to meet optimal growth conditions for microalgae and to produce high-quality biomass at acceptable cost. Importantly, mass production techniques are important for producing a commercial product in sufficient amounts. However, it should not be overlooked that microalgal biotechnology still faces challenges, in particular the high cost of production, the lack of knowledge about biological contaminants and the challenge of loss of active ingredients during biomass production. These issues involve the research and development of low-cost, standardized, industrial-scale production equipment and the optimization of production processes, as well as the urgent need to increase the research on biological contaminants and microalgal active ingredients. This review systematically examines the global development of microalgal biotechnology for biomass production, with emphasis on the techniques of cultivation, harvesting, drying and control of biological contaminants, and discusses the challenges and strategies to further improve quality and reduce costs. Moreover, the current status of biomass production of some biotechnologically important species has been summarized, and the importance of improving microalgae-related standards for their commercial applications is noted.
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Affiliation(s)
- Song Qin
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, No. 19, Chunhui Road, Laishan District, Yantai, 264003, Shandong, China.
| | - Kang Wang
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, No. 19, Chunhui Road, Laishan District, Yantai, 264003, Shandong, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fengzheng Gao
- Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 16, 6700 AA, Wageningen, Netherlands
- Laboratory of Sustainable Food Processing, ETH Zürich, 8092, Zurich, Switzerland
- Laboratory of Nutrition and Metabolic Epigenetics, ETH Zürich, 8603, Schwerzenbach, Switzerland
| | - Baosheng Ge
- College of Chemical Engineering and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, 266580, China
| | - Hongli Cui
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, No. 19, Chunhui Road, Laishan District, Yantai, 264003, Shandong, China
| | - Wenjun Li
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, No. 19, Chunhui Road, Laishan District, Yantai, 264003, Shandong, China
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Jha P, Ghosh S, Panja A, Kumar V, Singh AK, Prasad R. Microalgae and biogas: a boon to energy sector. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-29135-y. [PMID: 37608163 DOI: 10.1007/s11356-023-29135-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 07/30/2023] [Indexed: 08/24/2023]
Abstract
The global energy generation market immensely depends on fossil fuels which balances our survival on this planet. Energy can be called as the "master element" for our daily needs, starting from household power supply, agricultural purpose, automobile and transportation, industrial workload to economic and research domains. Fuel switching initiatives are being adapted by environmentalist and scientists to bring a novel sustainable source of energy. An environment and renewable alternative to fossil fuels are a must. Over the years, the world has shifted toward generating green fuels immensely. One such potential alternative to fossil fuels are biogases. Being versatile and renewable in nature, it has drawn immense attention globally. Despite having such potentials there exist some major drawbacks which mainly deal with the starting material. One such source for biogases can be microalgae. Microalgae based biogas production can produce huge amount of energy and that has been implemented by many foreign countries and their companies. Despite being in use in many countries, there are issues which needs to be addressed which will overall improve the biogas potential from microalgae even more. This review mainly focuses on generation of biogas from microalgae as a feedstock which are very economical and sustainable in its nature, presenting improvement strategies which can be impended to boost the over biogas sector globally.
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Affiliation(s)
- Priyanka Jha
- Department of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, 144411, India
- Department of Research Facilitation, Division of Research and Development, Lovely Professional University, Phagwara, Punjab, 144411, India
| | - Snigdha Ghosh
- Amity Institute of Biotechnology, Amity University, Major Arterial Road, New Town, Kolkata, West Bengal, 700135, India
| | - Avirup Panja
- Amity Institute of Biotechnology, Amity University, Major Arterial Road, New Town, Kolkata, West Bengal, 700135, India
| | - Vijay Kumar
- Department of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, 144411, India
- Plant Biotechnology Lab, Division of Research and Development, Lovely Professional University, Phagwara, Punjab, 144411, India
| | - Akhilesh Kumar Singh
- Department of Biotechnology, Mahatma Gandhi Central University, Belisarai, Motihari, Bihar, 845401, India
| | - Ram Prasad
- Department of Botany, Mahatma Gandhi Central University, Belisarai, Motihari, Bihar, 845401, India.
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Song J, Xu Z, Chen Y, Guo J. Nanoparticles, an Emerging Control Method for Harmful Algal Blooms: Current Technologies, Challenges, and Perspectives. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2384. [PMID: 37630969 PMCID: PMC10457966 DOI: 10.3390/nano13162384] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/13/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023]
Abstract
Harmful algal blooms (HABs) are a global concern because they harm aquatic ecosystems and pose a risk to human health. Various physical, chemical, and biological approaches have been explored to control HABs. However, these methods have limitations in terms of cost, environmental impact, and effectiveness, particularly for large water bodies. Recently, the use of nanoparticles has emerged as a promising strategy for controlling HABs. Briefly, nanoparticles can act as anti-algae agents via several mechanisms, including photocatalysis, flocculation, oxidation, adsorption, and nutrient recovery. Compared with traditional methods, nanoparticle-based approaches offer advantages in terms of environmental friendliness, effectiveness, and specificity. However, the challenges and risks associated with nanoparticles, such as their toxicity and ecological impact, must be considered. In this review, we summarize recent research progress concerning the use of nanoparticles to control HABs, compare the advantages and disadvantages of different types of nanoparticles, discuss the factors influencing their effectiveness and environmental impact, and suggest future directions for research and development in this field. Additionally, we explore the causes of algal blooms, their harmful effects, and various treatment methods, including restricting eutrophication, biological control, and disrupting living conditions. The potential of photocatalysis for generating reactive oxygen species and nutrient control methods using nanomaterials are also discussed in detail. Moreover, the application of flocculants/coagulants for algal removal is highlighted, along with the challenges and potential solutions associated with their use. This comprehensive overview aims to contribute to the development of efficient and sustainable strategies for controlling HAB control.
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Affiliation(s)
| | | | - Yu Chen
- State Key Laboratory of Radio Frequency Heterogeneous Integration (Shenzhen University), College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China; (J.S.); (Z.X.)
| | - Jiaqing Guo
- State Key Laboratory of Radio Frequency Heterogeneous Integration (Shenzhen University), College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China; (J.S.); (Z.X.)
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Vassalle L, Ferrer I, Passos F, Filho CRM, Garfí M. Nature-based solutions for wastewater treatment and bioenergy recovery: A comparative Life Cycle Assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 880:163291. [PMID: 37023825 DOI: 10.1016/j.scitotenv.2023.163291] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/15/2023] [Accepted: 03/31/2023] [Indexed: 05/27/2023]
Abstract
The aim of this study was to assess the environmental impacts of up-flow anaerobic sludge blanket (UASB) reactors coupled with high rate algal ponds (HRAPs) for wastewater treatment and bioenergy recovery using the Life Cycle Assessment (LCA) methodology. This solution was compared with the UASB reactor coupled with other consolidated technologies in rural areas of Brazil, such as trickling filters, polishing ponds and constructed wetlands. To this end, full-scale systems were designed based on experimental data obtained from pilot/demonstrative scale systems. The functional unit was 1 m3 of water. System boundaries comprised input and output flows of material and energy resources for system construction and operation. The LCA was performed with the software SimaPro®, using the ReCiPe midpoint method. The results showed that the HRAPs scenario was the most environmentally friendly alternative in 4 out of 8 impact categories (i.e. Global warming, Stratospheric Ozone Depletion, Terrestrial Ecotoxicity and Fossil resource scarcity). This was associated with the increase in biogas production by the co-digestion of microalgae and raw wastewater, leading to higher electricity and heat recovery. From an economic point of view, despite the HRAPs showed a higher capital cost, the operation and maintenance costs were completely offset by the revenue obtained from the electricity generated. Overall, the UASB reactor coupled with HRAPS showed to be a feasible nature-based solution to be used in small communities in Brazil, especially when microalgae biomass is valorised and used to increase biogas productivity.
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Affiliation(s)
- Lucas Vassalle
- GEMMA-Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya-BarcelonaTech, c/Jordi Girona, 1-3, Building D1, E-08034 Barcelona, Spain; Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais (UFMG), Av. Antônio Carlos, 6627 Belo Horizonte, MG, Brazil
| | - Ivet Ferrer
- GEMMA-Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya-BarcelonaTech, c/Jordi Girona, 1-3, Building D1, E-08034 Barcelona, Spain
| | - Fabiana Passos
- GEMMA-Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya-BarcelonaTech, c/Jordi Girona, 1-3, Building D1, E-08034 Barcelona, Spain; Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais (UFMG), Av. Antônio Carlos, 6627 Belo Horizonte, MG, Brazil
| | - Cesar Rossas Mota Filho
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais (UFMG), Av. Antônio Carlos, 6627 Belo Horizonte, MG, Brazil
| | - Marianna Garfí
- GEMMA-Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya-BarcelonaTech, c/Jordi Girona, 1-3, Building D1, E-08034 Barcelona, Spain.
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36
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Tan KY, Low SS, Manickam S, Ma Z, Banat F, Munawaroh HSH, Show PL. Prospects of microalgae in nutraceuticals production with nanotechnology applications. Food Res Int 2023; 169:112870. [PMID: 37254319 DOI: 10.1016/j.foodres.2023.112870] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 04/06/2023] [Accepted: 04/18/2023] [Indexed: 06/01/2023]
Abstract
Nutraceutical supplements provide health benefits, such as fulfilling the lack of nutrients in the human body or being utilized to treat or cure certain diseases. As the world population is growing, certain countries are experiencing food crisis challenges, causing natural foods are not sustainable to be used for nutraceutical production because it will require large-scale of food supply to produce enriched nutraceutics. The high demand for abundant nutritional compounds has made microalgae a reliable source as they can synthesize high-value molecules through photosynthetic activities. However, some microalgae species are limited in growth and unable to accumulate a significant amount of biomass due to several factors related to environmental conditions. Therefore, adding nanoparticles (NPs) as a photocatalyst is considered to enhance the yield rate of microalgae in an energy-saving and economical way. This review focuses on the composition of microalgal biomass for nutraceutical production, the health perspectives of nutritional compounds on humans, and the application of nanotechnology on microalgae for improved production and harvesting. The results obtained show that microalgal-based compounds indeed have better nutrients content than natural foods. However, nanotechnology must be further comprehended to make them non-hazardous and sustainable.
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Affiliation(s)
- Kai Yao Tan
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan, Malaysia
| | - Sze Shin Low
- Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, University of Nottingham Ningbo China, Ningbo 315100 China.
| | - Sivakumar Manickam
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan BE1410, Brunei Darussalam
| | - Zengling Ma
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Wenzhou 325035, China; College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China; Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China.
| | - Fawzi Banat
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Heli Siti Halimatul Munawaroh
- Chemistry Program, Department of Chemistry Education, Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia, Jalan Dr. Setiabudhi, 229, Bandung 40154, Indonesia
| | - Pau Loke Show
- Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China; Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai 602105, India.
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37
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Levett A, Gagen EJ, Levett I, Erskine PD. Integrating microalgae production into mine closure plans. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 337:117736. [PMID: 36933531 DOI: 10.1016/j.jenvman.2023.117736] [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: 12/11/2022] [Revised: 02/18/2023] [Accepted: 03/11/2023] [Indexed: 06/18/2023]
Abstract
Examples of successful mine closure and acceptable regional transitioning of mining areas are scarce. The recent changes to the environmental, social and governance (ESG) obligations of mining companies should help to ensure that water and land resources as well as post-mining employment opportunities are considered as a part of mine closure. Integrating microalgae production into mine closure plans is a potential opportunity for mining companies to improve many ESG outcomes. Mine sites with sufficient suitable land and water resources in high solar radiation geographies may be able to economically grow microalgae to capture atmospheric CO2, re-purpose saline mine waters, treat acidic and near-neutral pH metalliferous waters as well as produce soil ameliorants (biofertiliser, biostimulants and/or biochar) to improve mine rehabilitation outcomes. Microalgae production facilities may also provide an alternative industry and employment opportunities to help transition regional mining towns that have become reliant on mining activities. The potential economic, environmental and social benefits of using mine-influenced water for microalgae production may offer an opportunity to successfully close and transition some mining landscapes.
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Affiliation(s)
- Alan Levett
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland, 4072, Australia.
| | - Emma J Gagen
- Environmental Microbiology for Mining and Agriculture, Queensland, 4054, Australia
| | - Ian Levett
- School of Chemical Engineering, The University of Queensland, Brisbane, 4072, Australia
| | - Peter D Erskine
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland, 4072, Australia
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Mofijur M, Hasan MM, Sultana S, Kabir Z, Djavanroodi F, Ahmed SF, Jahirul MI, Badruddin IA, Khan TMY. Advancements in algal membrane bioreactors: Overcoming obstacles and harnessing potential for eliminating hazardous pollutants from wastewater. CHEMOSPHERE 2023:139291. [PMID: 37353165 DOI: 10.1016/j.chemosphere.2023.139291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/11/2023] [Accepted: 06/19/2023] [Indexed: 06/25/2023]
Abstract
This paper offers a comprehensive analysis of algal-based membrane bioreactors (AMBRs) and their potential for removing hazardous and toxic contaminants from wastewater. Through an identification of contaminant types and sources, as well as an explanation of AMBR operating principles, this study sheds light on the promising capabilities of AMBRs in eliminating pollutants like nitrogen, phosphorus, and organic matter, while generating valuable biomass and energy. However, challenges and limitations, such as the need for process optimization and the risk of algal-bacterial imbalance, have been identified. To overcome these obstacles, strategies like mixed cultures and bioaugmentation techniques have been proposed. Furthermore, this study explores the wider applications of AMBRs beyond wastewater treatment, including the production of value-added products and the removal of emerging contaminants. The findings underscore the significance of factors such as appropriate algal-bacterial consortia selection, hydraulic and organic loading rate optimization, and environmental factor control for the success of AMBRs. A comprehensive understanding of these challenges and opportunities can pave the way for more efficient and effective wastewater treatment processes, which are crucial for safeguarding public health and the environment.
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Affiliation(s)
- M Mofijur
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW, 2007, Australia; Mechanical Engineering Department, Prince Mohammad Bin Fahd University, Al Khobar, 31952, Saudi Arabia.
| | - M M Hasan
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW, 2007, Australia; School of Engineering and Technology, Central Queensland University, QLD, 4701, Australia
| | - Sabrina Sultana
- Department of Soil, Water and Environment, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Zobaidul Kabir
- School of Environmental and Life Sciences, University of Newcastle, NSW, 2258, Australia
| | - F Djavanroodi
- Mechanical Engineering Department, Prince Mohammad Bin Fahd University, Al Khobar, 31952, Saudi Arabia
| | - Shams Forruque Ahmed
- Science and Math Program, Asian University for Women, Chattogram, 4000, Bangladesh
| | - M I Jahirul
- School of Engineering and Technology, Central Queensland University, QLD, 4701, Australia
| | - Irfan Anjum Badruddin
- Mechanical Engineering Department, College of Engineering, King Khalid University, Abha, 61421, Saudi Arabia
| | - T M Yunus Khan
- Mechanical Engineering Department, College of Engineering, King Khalid University, Abha, 61421, Saudi Arabia
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Li LH, Li YL, Hong Y. New insights into the microalgal culture using kitchen waste: Enzyme pretreatment and mixed microalgae self-flocculation. Biochem Eng J 2023. [DOI: 10.1016/j.bej.2023.108904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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40
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Shanmuganathan R, Le QH, Aloufi AS, Gavurová B, Deepak JR, Mosisa E, R PT. High efficiency lipid production, biochar yield and chlorophyll a content of chlorella sp. microalgae exposed on sea water and TiO 2 nanoparticles. ENVIRONMENTAL RESEARCH 2023:116263. [PMID: 37247655 DOI: 10.1016/j.envres.2023.116263] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 05/13/2023] [Accepted: 05/26/2023] [Indexed: 05/31/2023]
Abstract
This study explores the challenges facing microalgae biofuel production, specifically low lipid content and difficulties with algal cell harvesting. The purpose of the research is to investigate the effect of seawater content and nanoparticle concentration on freshwater microalgae growth and biofuel production. The principal results of the study show that increasing the proportion of seawater and nanoparticles enhances the lipid content and cell diameter of microalgae, while excessive concentrations of nanoparticles and low seawater content lead to reduced microalgae growth. Furthermore, an optimal cell diameter was identified at a nanoparticle concentration of 150 mg/L. The study also reveals that increasing seawater content can decrease zeta potential and increase chlorophyll a content due to the concentration of dissolved organic matter. Increasing the seawater content from 0% to 25% decreased zeta potential by 1% owing to the instability and aggregation of the cells. Chlorophyll a for the 0% seawater was 0.55 which is increased to 1.32 only due to the increase in the seawater content. This significant increase is due to the concentration of dissolved organic matter in seawater. Additionally, the presence of seawater positively affects microalgae metabolic activity and biochar yield. The findings of this study offer valuable insights into the potential for optimizing microalgae biofuel production. The use of seawater and nanoparticles has shown promise in enhancing microalgae growth and biofuel yield, and the results of this study underscore the scientific value of exploring the role of seawater and nanoparticles in microalgae biofuel production. Further research in this area has the potential to significantly contribute to the development of sustainable energy solutions.
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Affiliation(s)
- Rajasree Shanmuganathan
- School of Medicine and Pharmacy, Duy Tan University, Da Nang, Viet Nam; Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam
| | - Quynh Hoang Le
- School of Medicine and Pharmacy, Duy Tan University, Da Nang, Viet Nam; Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam
| | - Abeer S Aloufi
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Beata Gavurová
- Technical University of Košice, Faculty of Mining, Ecology, Process Control and Geotechnologies, Letná 1/9, 042 00, Košice-Sever, Slovak Republic
| | - J R Deepak
- Department of Mechanical Engineering, Sathyabama Institute of Science and Technology, Chennai, India
| | | | - Praveenkumar T R
- Department of Construction Technology and Management, Wollega University, Ethiopia.
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41
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Damasceno ÉP, Ribeiro F, Costa-Lotufo LV, Soares AMVM, Pavlaki MD, Loureiro S. Assessing the impact of antineoplastic drugs in the aquatic environment: State of the art and future perspective for freshwater organisms. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 99:104109. [PMID: 36921700 DOI: 10.1016/j.etap.2023.104109] [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: 08/16/2022] [Revised: 02/22/2023] [Accepted: 03/11/2023] [Indexed: 06/18/2023]
Abstract
Since the late 70s, the continuous pharmaceuticals` input into the environment has raised concerns regarding the eventual risk posed by such compounds to human and environmental health. A major group of pharmaceuticals in terms of environmental impact are the antineoplastic agents (AAs). Herein, we followed a systematic review method to retrieve antineoplastic agents (AAs') ecotoxicological information regarding freshwater species. In this analysis, data from diverse taxonomic groups, from microorganisms to vertebrate species, looked at different levels of biological organization, including cell lines. Furthermore, this review gathers ecotoxicological parameters (EC50 and LC50) for imatinib (IM), cisplatin (CisPt), and 5-fluorouracil (5-FU) in species sensitivity distribution (SSD) curves and estimates the hazard concentration (HC5) considering the protection of 95% of the ecological community. Lastly, we suggest how we can improve AAs' Environmental Risk Assessment (ERA), considering potential adoptable toxicity endpoints, test duration, AAs metabolites testing, and AAs mixture exposure.
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Affiliation(s)
- Évila Pinheiro Damasceno
- CESAM - Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Fabianne Ribeiro
- CESAM - Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Leticia V Costa-Lotufo
- Institute of Biomedical Sciences, University of São Paulo, 05508-900 São Paulo, SP, Brazil
| | - Amadeu M V M Soares
- CESAM - Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Maria D Pavlaki
- CESAM - Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Susana Loureiro
- CESAM - Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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42
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Vilatte A, Spencer-Milnes X, Jackson HO, Purton S, Parker B. Spray Drying Is a Viable Technology for the Preservation of Recombinant Proteins in Microalgae. Microorganisms 2023; 11:microorganisms11020512. [PMID: 36838478 PMCID: PMC9967251 DOI: 10.3390/microorganisms11020512] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 01/28/2023] [Accepted: 01/30/2023] [Indexed: 02/22/2023] Open
Abstract
Microalgae are promising host organisms for the production of encapsulated recombinant proteins such as vaccines. However, bottlenecks in bioprocess development, such as the drying stage, need to be addressed to ensure feasibility at scale. In this study, we investigated the potential of spray drying to produce a recombinant vaccine in microalgae. A transformant line of Chlamydomonas reinhardtii carrying a subunit vaccine against salmonid alphavirus was created via chloroplast engineering. The integrity of the recombinant protein after spray drying and its stability after 27 months storage at -80 °C, +4 °C and room temperature were assessed by immunoblotting. The protein withstood spray drying without significant losses. Long-term storage at +4 °C and room temperature resulted in 50% and 92% degradation, respectively. Optimizing spray drying and storage conditions should minimize degradation and favour short-term storage at positive temperatures. Using data on yield and productivity, the economics of spray drying- and freeze drying-based bioprocesses were compared. The drying stage corresponded to 41% of the total production cost. Process optimization, genetic engineering and new market strategies were identified as potential targets for cost reduction. Overall, this study successfully demonstrates the suitability of spray drying as a process option for recombinant protein production in microalgae at the industrial scale.
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Affiliation(s)
- Anaëlle Vilatte
- Department of Biochemical Engineering, University College London, Gower Street, London WC1E 6BT, UK
| | - Xenia Spencer-Milnes
- Department of Biochemical Engineering, University College London, Gower Street, London WC1E 6BT, UK
- Algal Research Group, Institute of Structural and Molecular Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Harry Oliver Jackson
- Algal Research Group, Institute of Structural and Molecular Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Saul Purton
- Algal Research Group, Institute of Structural and Molecular Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Brenda Parker
- Department of Biochemical Engineering, University College London, Gower Street, London WC1E 6BT, UK
- Correspondence:
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43
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Singh G, Patidar S. Water quality improvement using novel attached growth systems. SEP SCI TECHNOL 2023. [DOI: 10.1080/01496395.2023.2172584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Gulab Singh
- Department of Civil Engineering, National Institute of Technology, Kurukshetra, Haryana, India
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44
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Zhang J, Li Y, Shao E, Chow V, Li J, Qian J, Xu P, Li J, Song H, Zhou W, Shao S. Feasibility and constraints of edible fungi bio-flocculating microalgae. ALGAL RES 2023. [DOI: 10.1016/j.algal.2023.103004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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45
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Qin W, Qian K, Liu X, Zhang X, Chen Z, Wang M, Jia Y, Ma Z. Investigation of the flocculating activity of oyster shell powders on Microcystis aeruginosa with varying particle size and mechanical conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:44353-44366. [PMID: 36692721 DOI: 10.1007/s11356-023-25377-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 01/13/2023] [Indexed: 01/25/2023]
Abstract
Harmful algal blooms have been a serious environmental problem. The flocculation of Microcystis aeruginosa by oyster shell powders prepared by aerobic calcination (CO), anaerobic calcination (CN), acidification anaerobic calcination (CAN), and deacetylation anaerobic calcination (CHN) was studied. The CO800 (100 mesh) and CN800 (160 mesh) presented the highest flocculation rate of 89.46% and 77.39% when they were stirred for 1 min with speed of 750 r/min and 250 r/min, respectively. The photosynthesis and viability of the algae cells flocculated by CO800 with particle size of 100 mesh were not significantly damaged. The phosphorus nutrient could be removed by CO800 and CN800 effectively due to the presence of Ca2+, which also limited Microcystis aeruginosa growth. The study showed that the processing of oyster shell powder could be used as an effective flocculating material.
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Affiliation(s)
- Wenli Qin
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China.,Zhejiang Provincial Key Lab for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, 325035, China
| | - Kairong Qian
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China.,Zhejiang Provincial Key Lab for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, 325035, China
| | - Xueya Liu
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China.,Zhejiang Provincial Key Lab for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, 325035, China
| | - Xinyi Zhang
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China.,Zhejiang Provincial Key Lab for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, 325035, China
| | - Zefei Chen
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China.,Zhejiang Provincial Key Lab for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, 325035, China
| | - Min Wang
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China.,Zhejiang Provincial Key Lab for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, 325035, China
| | - Yang Jia
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China.,Zhejiang Provincial Key Lab for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, 325035, China
| | - Zengling Ma
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China. .,Zhejiang Provincial Key Lab for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, 325035, China.
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46
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Zhang C, Laipan M, Zhang L, Yu S, Li Y, Guo J. Capturing effects of filamentous fungi Aspergillus flavus ZJ-1 on microalgae Chlorella vulgaris WZ-1 and the application of their co-integrated fungi-algae pellets for Cu(II) adsorption. JOURNAL OF HAZARDOUS MATERIALS 2023; 442:130105. [PMID: 36206717 DOI: 10.1016/j.jhazmat.2022.130105] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/24/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Using filamentous fungi to capture unicellular microalgae is an effective way for microalgae recovery in water treatment. Here, fungi Aspergillus flavus ZJ-1 and microalgae Chlorella vulgaris WZ-1 isolated from a copper tailings pond were used to study the capture effect of ZJ-1 on WZ-1. The highest capture efficiency (97.85%) was obtained within 6 h under the optimized conditions of 30 °C, 150 rpm, fungi-algae biomass ratio of 2.24:1, and initial pH of 9.24 in microalgae medium. The formed fungi-algae pellets (FAPs) were further used to remove Cu(II) from aqueous solution. Results showed that the FAPs formed at different capture times all adsorbed Cu(II) well, and the PAFs formed within 2 h (PAFs2 h) exhibited the highest Cu(II) adsorption capacity (80.42 mg·g-1). SEM images showed that Cu(II) caused a change in the internal structure of PAFs2 h from loose to compact, the mycelium shrunk, and the microalgal cells were concave. Cu(II) adsorption by PAFs2 h was well conformed to the pseudo-second-order kinetics and the Langmuir isotherm (123.61 mg·g-1 of theoretically maximum adsorption capacity). This work opens a way for applying FAPs in the remediation of heavy metal-contaminated wastewater, and the metal adsorption effect was determined by the capture amount of microalgae.
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Affiliation(s)
- Chao Zhang
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China.
| | - Minwang Laipan
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Lei Zhang
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Shenghui Yu
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Yongtao Li
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China; College of Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China
| | - Junkang Guo
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
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47
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Kaur M, Bhatia S, Gupta U, Decker E, Tak Y, Bali M, Gupta VK, Dar RA, Bala S. Microalgal bioactive metabolites as promising implements in nutraceuticals and pharmaceuticals: inspiring therapy for health benefits. PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2023; 22:1-31. [PMID: 36686403 PMCID: PMC9840174 DOI: 10.1007/s11101-022-09848-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 11/11/2022] [Indexed: 06/17/2023]
Abstract
The rapid increase in global population and shrinkage of agricultural land necessitates the use of cost-effective renewable sources as alternative to excessive resource-demanding agricultural crops. Microalgae seem to be a potential substitute as it rapidly produces large biomass that can serve as a good source of various functional ingredients that are not produced/synthesized inside the human body and high-value nonessential bioactive compounds. Microalgae-derived bioactive metabolites possess various bioactivities including antioxidant, anti-inflammatory, antimicrobial, anti-carcinogenic, anti-hypertensive, anti-lipidemic, and anti-diabetic activities, thereof rapidly elevating their demand as interesting option in pharmaceuticals, nutraceuticals and functional foods industries for developing new products. However, their utilization in these sectors has been limited. This demands more research to explore the functionality of microalgae derived functional ingredients. Therefore, in this review, we intended to furnish up-to-date knowledge on prospects of bioactive metabolites from microalgae, their bioactivities related to health, the process of microalgae cultivation and harvesting, extraction and purification of bioactive metabolites, role as dietary supplements or functional food, their commercial applications in nutritional and pharmaceutical industries and the challenges in this area of research. Graphical abstract
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Affiliation(s)
- Manpreet Kaur
- Department of Biochemistry, Punjab Agricultural University, Ludhiana, Punjab 141004 India
| | - Surekha Bhatia
- Department of Processing and Food Engineering, Punjab Agricultural University, Ludhiana, Punjab 141004 India
| | - Urmila Gupta
- Department of Renewable Energy Engineering, Punjab Agricultural University, Ludhiana, Punjab 141004 India
| | - Eric Decker
- Department of Food Science, University of Massachusetts, Amherst, MA USA
| | - Yamini Tak
- Agricultural Research Station, Agricultural University, Ummedganj, Kota India
| | - Manoj Bali
- Research & Development, Chemical Resources (CHERESO), Panchkula, Haryana India
| | - Vijai Kumar Gupta
- Center for Safe and Improved Food & Biorefining and Advanced Materials Research Center, SRUC Barony Campus, Dumfries, Scotland, UK
| | - Rouf Ahmad Dar
- Sam Hiiginbottom University of Agriculture, Technology and Sciences, Prayagraj, Uttar Pradesh 211007 India
| | - Saroj Bala
- Department of Microbiology, Punjab Agricultural University, Ludhiana, Punjab 141004 India
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48
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Olabi AG, Shehata N, Sayed ET, Rodriguez C, Anyanwu RC, Russell C, Abdelkareem MA. Role of microalgae in achieving sustainable development goals and circular economy. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 854:158689. [PMID: 36108848 DOI: 10.1016/j.scitotenv.2022.158689] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/26/2022] [Accepted: 09/07/2022] [Indexed: 06/15/2023]
Abstract
In 2015, the United Nations General Assembly (UNGA) set out 17 Sustainable Development Goals (SDGs) to be achieved by 2030. These goals highlight key objectives that must be addressed. Each target focuses on a unique perspective crucial to meeting these goals. Social, political, and economic issues are addressed to comprehensively review the main issues combating climate change and creating sustainable and environmentally friendly industries, jobs, and communities. Several mechanisms that involve judicious use of biological entities are among instruments that are being explored to achieve the targets of SDGs. Microalgae have an increasing interest in various sectors, including; renewable energy, food, environmental management, water purification, and the production of chemicals such as biofertilizers, cosmetics, and healthcare products. The significance of microalgae also arises from their tendency to consume CO2, which is the main greenhouse gas and the major contributor to the climate change. This work discusses the roles of microalgae in achieving the various SDGs. Moreover, this work elaborates on the contribution of microalgae to the circular economy. It was found that the microalgae contribute to all the 17th SDGs, where they directly contribute to 9th of the SDGs and indirectly contribute to the rest. The major contribution of the Microalgae is clear in SDG-6 "Clean water and sanitation", SDG-7 "Affordable and clean energy", and SDG-13 "Climate action". Furthermore, it was found that Microalgae have a significant contribution to the circular economy.
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Affiliation(s)
- A G Olabi
- Dept. of Sustainable and Renewable Energy Engineering, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates; Mechanical Engineering and Design, Aston University, School of Engineering and Applied Science, Aston Triangle, Birmingham B4 7ET, UK.
| | - Nabila Shehata
- Environmental Science and Industrial Development Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt.
| | - Enas Taha Sayed
- Center for Advanced Materials Research, University of Sharjah, PO Box 27272, Sharjah, United Arab Emirates; Faculty of Engineering, Minia University, Elminia, Egypt.
| | - Cristina Rodriguez
- School of Computing, Engineering, and Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK
| | - Ruth Chinyere Anyanwu
- School of Computing, Engineering, and Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK
| | - Callum Russell
- School of Computing, Engineering, and Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK
| | - Mohammad Ali Abdelkareem
- Dept. of Sustainable and Renewable Energy Engineering, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates; Faculty of Engineering, Minia University, Elminia, Egypt.
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Zhang H, Wen H, Yin H, Qin W, Liu X, Wang Y, Liu Y. A novel approach for harvesting the microalgae Chlorella vulgaris with sodium alginate microspheres using buoy-bead flotation method. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 851:158418. [PMID: 36055496 DOI: 10.1016/j.scitotenv.2022.158418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 06/15/2023]
Abstract
In order to reduce the residue of buoy-beads and solve the problem of pollution caused by high flocculant consumption, SAMs1(sodium alginate microspheres) with sodium alginate were used as the raw material to harvest microalgae for the first time. In addition, during the manufacturing of SAMs, the re-frying oil was used as the dispersion system, which not only reduced the cost, but also provided new ideas for the treatment of re-frying oil. Response surface methodology was used to explore the influence of different factors and the interaction of variables, and the harvesting process was optimized using the multi-objective optimization. Based upon the calculation of XDLVO (extended Derjaguin-Laudau-Verwey-Overbeek) theory and the characterization of Fourier Transform Infrared Spectroscopy, the harvesting mechanism of buoy-bead flotation method was clarified. The results showed that the combination of SAMs and a small amount of aluminum sulfate could replace air flotation and traditional buoy-bead flotation with solid particles as buoy-beads to harvest C. vulgaris (Chlorella vulgaris). For the multi-objective optimization with harvesting efficiency as the priority, the predicted pH, the concentrations of aluminum sulfate and buoy-beads and the dilution factor had values of 8.25, 56.09 mg/L, 17.46 mL/L, and 2.15, respectively. In the validation experiment, the harvesting efficiency and the enrichment ratio of C. vulgaris could reach the values of 97.51 % and 1.97 %, respectively. For the validation experiment of reverse optimization with focusing on enrichment ratio, the harvesting efficiency and the enrichment ratio of C. vulgaris had the values of 93.78 % and 2.65 %, respectively. The essence of improving the harvesting mechanism was the combination of carboxyl and hydroxyl groups between C. vulgaris and SAMs and the adsorption of positive ions by specific proteins on the surface of C. vulgaris to reduce electrostatic repulsion.
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Affiliation(s)
- Haowen Zhang
- School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China
| | - Hao Wen
- School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China.
| | - Hongwei Yin
- School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China
| | - Wei Qin
- School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China
| | - Xu Liu
- School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China
| | - Yue Wang
- School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China
| | - Ying Liu
- School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China.
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50
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Emerging application of hydrocyclone in biotechnology and food processing. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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