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Baldisserotto C, Gessi S, Ferraretto E, Merighi S, Ardondi L, Giacò P, Ferroni L, Nigro M, Travagli A, Pancaldi S. Cultivation modes affect the morphology, biochemical composition, and antioxidant and anti-inflammatory properties of the green microalga Neochloris oleoabundans. PROTOPLASMA 2024:10.1007/s00709-024-01958-7. [PMID: 38864933 DOI: 10.1007/s00709-024-01958-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 05/15/2024] [Indexed: 06/13/2024]
Abstract
Microalgae are considered promising sustainable sources of natural bioactive compounds to be used in biotechnological sectors. In recent years, attention is increasingly given to the search of microalgae-derived compounds with antioxidant and anti-inflammatory properties for nutraceutical or pharmacological issues. In this context, attention is usually focused on the composition and bioactivity of algae or their extracts, while less interest is driven to their biological features, for example, those related to morphology and cultivation conditions. In addition, specific studies on the antioxidant and anti-inflammatory properties of microalgae mainly concern Chlorella or Spirulina. The present work was focused on the characterization of the Chlorophyta Neochloris oleoabundans under two combinations of cultivation modes: autotrophy and glucose-induced mixotrophy, each followed by starvation. Biomass for morphological and biochemical characterization, as well as for extract preparation, was harvested at the end of each cultivation phase. Analyses indicated a different content of the most important classes of bioactive compounds with antioxidant/anti-inflammatory properties (lipids, exo-polysaccharides, pigments, total phenolics, and proteins). In particular, the most promising condition able to prompt the production of antioxidant algal biomass with anti-inflammatory properties was the mixotrophic one. Under mixotrophy, beside an elevated algal biomass production, a strong photosynthetic metabolism with high appression of thylakoid membranes and characteristics of high photo-protection from oxidative damage was observed and linked to the overproduction of exo-polysaccharides and lipids rather than pigments. Overall, mixotrophy appears a good choice to produce natural bioactive extracts, potentially well tolerated by human metabolism and environmentally sustainable.
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Affiliation(s)
- C Baldisserotto
- Department of Environmental and Prevention Sciences, University of Ferrara, C.So Ercole I d'Este, 32, 44121, Ferrara, Italy
| | - S Gessi
- Department of Translational Medicine, University of Ferrara, Via Fossato Di Mortara, 17-19, 44121, Ferrara, Italy
| | - E Ferraretto
- Department of Environmental and Prevention Sciences, University of Ferrara, C.So Ercole I d'Este, 32, 44121, Ferrara, Italy
- Department of Translational Medicine, University of Ferrara, Via Fossato Di Mortara, 17-19, 44121, Ferrara, Italy
| | - S Merighi
- Department of Translational Medicine, University of Ferrara, Via Fossato Di Mortara, 17-19, 44121, Ferrara, Italy
| | - L Ardondi
- Department of Environmental and Prevention Sciences, University of Ferrara, C.So Ercole I d'Este, 32, 44121, Ferrara, Italy
| | - P Giacò
- Department of Environmental and Prevention Sciences, University of Ferrara, C.So Ercole I d'Este, 32, 44121, Ferrara, Italy
| | - L Ferroni
- Department of Environmental and Prevention Sciences, University of Ferrara, C.So Ercole I d'Este, 32, 44121, Ferrara, Italy
| | - M Nigro
- Department of Translational Medicine, University of Ferrara, Via Fossato Di Mortara, 17-19, 44121, Ferrara, Italy
| | - A Travagli
- Department of Translational Medicine, University of Ferrara, Via Fossato Di Mortara, 17-19, 44121, Ferrara, Italy
| | - S Pancaldi
- Department of Environmental and Prevention Sciences, University of Ferrara, C.So Ercole I d'Este, 32, 44121, Ferrara, Italy.
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2
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Olsen ML, Olsen K, Jensen PE. Consumer acceptance of microalgae as a novel food - Where are we now? And how to get further. PHYSIOLOGIA PLANTARUM 2024; 176:e14337. [PMID: 38716544 DOI: 10.1111/ppl.14337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 04/24/2024] [Accepted: 04/26/2024] [Indexed: 05/24/2024]
Abstract
Microalgae provide a potential new food resource for sustainable human nutrition. Many microalgae species can produce a high content of total protein with a balanced composition of essential amino acids, healthy oils rich in polyunsaturated fatty acids, carotenoids, fibers, and vitamins. These components can be made available via unprocessed microalgae or refined as individual ingredients. In either case, if added to foods, microalgae may affect taste, smell, texture, and appearance. This review focuses on how consumer acceptance of new foods - such as microalgae - can be accessed in the world of sensory science by bringing together examples from recent consumer surveys. The main aim is to obtain an overview of the attitude towards microalgae as a food ingredient in Europe. The overarching finding suggests that European consumers generally find microalgae acceptable as ingredients in food products. However, there is a prevailing preference for keeping inclusion levels low, primarily attributed to the vivid green color that algae impart to food items upon addition. Additionally, consumers tend to favor the taste of freshwater algae over marine species, often finding the latter's pronounced fishy flavor less appealing.
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Affiliation(s)
- Malene Lihme Olsen
- Department of Food Science, University of Copenhagen, Frederiksberg, Denmark
| | - Karsten Olsen
- Department of Food Science, University of Copenhagen, Frederiksberg, Denmark
| | - Poul Erik Jensen
- Department of Food Science, University of Copenhagen, Frederiksberg, Denmark
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3
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Belachqer-El Attar S, Morillas-España A, Sánchez-Zurano A, Pessôa LC, Pinna-Hernández MG, de Jesus Assis D, López JLC, Acién G. Influence of culture media composition on the rheology of microalgae concentrates on a large scale. N Biotechnol 2023; 77:90-99. [PMID: 37532220 DOI: 10.1016/j.nbt.2023.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 07/16/2023] [Accepted: 07/30/2023] [Indexed: 08/04/2023]
Abstract
The role of microalgae in the production of bioproducts and biofuels, along with their ability to provide a sustainable pathway for wastewater treatment, makes them promising alternatives to conventional processes. Nevertheless, large-scale downstream processing requires an understanding of biomass rheology that needs to be addressed further. This study aimed to characterize microalgal concentrates rheologically in different culture media. The presence of bacteria was quantified by photorespirometry and plate counting techniques. The culture medium was found to significantly influence viscosity, with primary wastewater exhibiting the highest viscosity and seawater plus pig slurry the lowest. The concentration of heterotrophic bacteria was directly related to the viscosity. Extracellular polysaccharides (EPS) in supernatant exhibited an inverse viscosity trend compared to biomass concentrates, with pig slurry cultures having higher concentrations. These findings emphasize the profound influence of culture medium and EPS on the rheology of microalgal biomass, underscoring the need for continued research aimed at facilitating and optimizing large-scale downstream processes within the framework of a circular economy and the attainment of the Sustainable Development Goals (6,8, and 12).
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Affiliation(s)
- Solaima Belachqer-El Attar
- Department of Chemical Engineering, University of Almería, 04120 Almería, Spain; Solar Energy Research Centre (CIESOL), 04120 Almería, Spain.
| | - Ainoa Morillas-España
- Department of Chemical Engineering, University of Almería, 04120 Almería, Spain; Solar Energy Research Centre (CIESOL), 04120 Almería, Spain
| | - Ana Sánchez-Zurano
- Department of Chemical Engineering, University of Almería, 04120 Almería, Spain; Solar Energy Research Centre (CIESOL), 04120 Almería, Spain
| | - Luiggi Cavalcanti Pessôa
- Graduate Program in Chemical Engineering (PPEQ), Polytechnic School, Federal University of Bahia, Salvador, Brazil; Senai Cimatec University Center, Environment Department, Salvador, Brazil
| | - María Guadalupe Pinna-Hernández
- Department of Chemical Engineering, University of Almería, 04120 Almería, Spain; Solar Energy Research Centre (CIESOL), 04120 Almería, Spain
| | - Denilson de Jesus Assis
- Graduate Program in Chemical Engineering (PPEQ), Polytechnic School, Federal University of Bahia, Salvador, Brazil; School of Exact and Technological Sciences, University Salvador, Salvador, Bahia, Brazil
| | - José Luis Casas López
- Department of Chemical Engineering, University of Almería, 04120 Almería, Spain; Solar Energy Research Centre (CIESOL), 04120 Almería, Spain
| | - Gabriel Acién
- Department of Chemical Engineering, University of Almería, 04120 Almería, Spain; Solar Energy Research Centre (CIESOL), 04120 Almería, Spain
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Gopalakrishnan KK, Kashian DR. Complex interactions among temperature, microplastics and cyanobacteria may facilitate cyanobacteria proliferation and microplastic deposition. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 263:115259. [PMID: 37473702 DOI: 10.1016/j.ecoenv.2023.115259] [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: 11/27/2022] [Revised: 07/07/2023] [Accepted: 07/12/2023] [Indexed: 07/22/2023]
Abstract
Cyanobacterial blooms are a global concern prone to causing environmental and economic damages and are tightly linked to anthropogenic nutrient inputs. Likewise, microplastic pollution has also become globally ubiquitous inevitably co-occurring with blooms. However, little is known on how microplastics influence cyanobacterial physiologically and how potential physiological changes can affect their buoyancy, ultimately impacting their fate, and transport, including deposition during bloom events. Interactions of environmental relevant concentrations of high-density polyethylene microplastics (MPs) (0-0.4 mg/mL) and temperatures (2.5-32.5 °C) were evaluated to assess the effects of MPs on interactions of cyanobacteria Anabaena variabilis's growth, total organic carbon concentrations, extracellular polymeric substances (EPS) production, and MP deposition. Microplastics both stimulated and inhibited A. variabilis growth depending on the concentration. Lower MPs concentrations (0.1-0.2 mg/L) increased A. variabilis growth while higher MP concentrations (>0.3 mg/mL) impeded it across all temperatures studied. Carbon sources leached from MPs may have been a contributing factor to the increased growth at lower MPs concentration, while higher MPs concentration potentially shaded A. variabilis inhibiting its growth. Shading may have induced stress which corresponded with an observed increase in EPS production by A. variabilis when exposed to MP. Extracellular polymeric substances generation activated under adverse circumstances (MPs 0.4 mg/mL) enhanced MP deposition. Overall, our findings indicate that MPs play an important role in cyanobacterial blooms, and that these blooms may enhance MPs deposition.
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Affiliation(s)
| | - Donna R Kashian
- Department of Biological Sciences, Wayne State University, Detroit, MI, USA.
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Galinytė D, Balčiūnaitė-Murzienė G, Karosienė J, Morudov D, Naginienė R, Baranauskienė D, Šulinskienė J, Kudlinskienė I, Savickas A, Savickienė N. Determination of Heavy Metal Content: Arsenic, Cadmium, Mercury, and Lead in Cyano-Phycocyanin Isolated from the Cyanobacterial Biomass. PLANTS (BASEL, SWITZERLAND) 2023; 12:3150. [PMID: 37687396 PMCID: PMC10490492 DOI: 10.3390/plants12173150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/22/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023]
Abstract
Cyano-phycocyanin (C-PC) is a light-absorbing biliprotein found in cyanobacteria, commonly known as blue-green algae. Due to its antioxidative, anti-inflammatory, and anticancer properties, this protein is a promising substance in medicine and pharmaceuticals. However, cyanobacteria tend to bind heavy metals from the environment, making it necessary to ensure the safety of C-PC for the development of pharmaceutical products, with C-PC isolated from naturally collected cyanobacterial biomass. This study aimed to determine the content of the most toxic heavy metals, arsenic (As), cadmium (Cd), mercury (Hg), and lead (Pb) in C-PC isolated from different cyanobacterial biomasses collected in the Kaunas Lagoon during 2019-2022, and compare them with the content of heavy metals in C-PC isolated from cultivated Spirulina platensis (S. platensis). Cyanobacteria of Aphanizomenon flos-aquae (A. flos-aquae) dominated the biomass collected in 2019, while the genus Microcystis dominated the biomasses collected in the years 2020 and 2022. Heavy metals were determined using inductively coupled plasma mass spectrometry (ICP-MS). ICP-MS analysis revealed higher levels of the most investigated heavy metals (Pb, Cd, and As) in C-PC isolated from the biomass with the dominant Microcystis spp. compared to C-PC isolated from the biomass with the predominant A. flos-aquae. Meanwhile, C-PC isolated from cultivated S. platensis exhibited lower concentrations of As and Pb than C-PC isolated from naturally collected cyanobacterial biomass.
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Affiliation(s)
- Daiva Galinytė
- Department of Pharmacology, Faculty of Pharmacy, Academy of Medicine, Lithuanian University of Health Sciences, Sukileliu Av. 13, 50162 Kaunas, Lithuania;
| | - Gabrielė Balčiūnaitė-Murzienė
- Faculty of Pharmacy, Institute of Pharmaceutical Technologies, Academy of Medicine, Lithuanian University of Health Sciences, Sukileliu Av. 13, 50162 Kaunas, Lithuania;
| | - Jūratė Karosienė
- Laboratory of Algology and Microbial Ecology, Nature Research Centre, Akademijos St. 2, 08412 Vilnius, Lithuania; (J.K.); (D.M.)
| | - Dmitrij Morudov
- Laboratory of Algology and Microbial Ecology, Nature Research Centre, Akademijos St. 2, 08412 Vilnius, Lithuania; (J.K.); (D.M.)
| | - Rima Naginienė
- Laboratory of Toxicology, Neurosciences Institute, Academy of Medicine, Lithuanian University of Health Sciences, Eivenių Str. 4, 50161 Kaunas, Lithuania; (R.N.); (D.B.); (J.Š.)
| | - Dalė Baranauskienė
- Laboratory of Toxicology, Neurosciences Institute, Academy of Medicine, Lithuanian University of Health Sciences, Eivenių Str. 4, 50161 Kaunas, Lithuania; (R.N.); (D.B.); (J.Š.)
| | - Jurgita Šulinskienė
- Laboratory of Toxicology, Neurosciences Institute, Academy of Medicine, Lithuanian University of Health Sciences, Eivenių Str. 4, 50161 Kaunas, Lithuania; (R.N.); (D.B.); (J.Š.)
| | | | - Arūnas Savickas
- Department of Drug Technology and Social Pharmacy, Academy of Medicine, Lithuanian University of Health Sciences, Sukileliu Av. 13, 50162 Kaunas, Lithuania;
| | - Nijolė Savickienė
- Department of Pharmacology, Faculty of Pharmacy, Academy of Medicine, Lithuanian University of Health Sciences, Sukileliu Av. 13, 50162 Kaunas, Lithuania;
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Sandgruber F, Gielsdorf A, Schenz B, Müller SM, Schwerdtle T, Lorkowski S, Griehl C, Dawczynski C. Variability in Macro- and Micronutrients of 15 Rarely Researched Microalgae. Mar Drugs 2023; 21:355. [PMID: 37367680 DOI: 10.3390/md21060355] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/01/2023] [Accepted: 06/06/2023] [Indexed: 06/28/2023] Open
Abstract
Microalgae have enormous potential for human nutrition, yet the European Commission has authorized the consumption of only eleven species. Strains of fifteen rarely researched microalgae from two kingdoms were screened regarding their nutritional profile and value for human health in two cultivation phases. Contents of protein, fiber, lipids, fatty acids, minerals, trace elements and heavy metals were determined. In the growth phase, microalgae accumulated more arginine, histidine, ornithine, pure and crude protein, Mg, Mn, Fe and Zn and less Ni, Mo and I2 compared to the stationary phase. Higher contents of total fat, C14:0, C14:1n5, C16:1n7, C20:4n6, C20:5n3 and also As were observed in microalgae from the chromista kingdom in comparison to microalgae from the plantae kingdom (p < 0.05). Conversely, the latter had higher contents of C20:0, C20:1n9 and C18:3n3 as well as Ca and Pb (p < 0.05). More precisely, Chrysotila carterae appeared to have great potential for human nutrition because of its high nutrient contents such as fibers, carotenoids, C20:6n3, Mg, Ca, Mn, Fe, Se, Zn, Ni, Mo and I2. In summary, microalgae may contribute to a large variety of nutrients, yet the contents differ between kingdoms, cultivation phases and also species.
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Affiliation(s)
- Fabian Sandgruber
- Junior Research Group Nutritional Concepts, Institute of Nutritional Sciences, Friedrich Schiller University, 07743 Jena, Germany
- Competence Cluster for Nutritional and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Dornburger Str. 25, 07743 Jena, Germany
| | - Annekathrin Gielsdorf
- Competence Center Algal Biotechnology, Anhalt University of Applied Sciences, 06406 Bernburg, Germany
| | - Benjamin Schenz
- Junior Research Group Nutritional Concepts, Institute of Nutritional Sciences, Friedrich Schiller University, 07743 Jena, Germany
- Competence Cluster for Nutritional and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Dornburger Str. 25, 07743 Jena, Germany
| | - Sandra Marie Müller
- Department of Food Chemistry, Institute of Nutritional Science, University of Potsdam, 14469 Potsdam, Germany
| | - Tanja Schwerdtle
- Department of Food Chemistry, Institute of Nutritional Science, University of Potsdam, 14469 Potsdam, Germany
- German Federal Institute for Risk Assessment (BfR), 10589 Berlin, Germany
| | - Stefan Lorkowski
- Competence Cluster for Nutritional and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Dornburger Str. 25, 07743 Jena, Germany
- Institute of Nutritional Sciences, Friedrich Schiller University, 07743 Jena, Germany
| | - Carola Griehl
- Competence Center Algal Biotechnology, Anhalt University of Applied Sciences, 06406 Bernburg, Germany
| | - Christine Dawczynski
- Junior Research Group Nutritional Concepts, Institute of Nutritional Sciences, Friedrich Schiller University, 07743 Jena, Germany
- Competence Cluster for Nutritional and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Dornburger Str. 25, 07743 Jena, Germany
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7
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Mrudulakumari Vasudevan U, Mai DHA, Krishna S, Lee EY. Methanotrophs as a reservoir for bioactive secondary metabolites: Pitfalls, insights and promises. Biotechnol Adv 2023; 63:108097. [PMID: 36634856 DOI: 10.1016/j.biotechadv.2023.108097] [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: 10/03/2022] [Revised: 12/10/2022] [Accepted: 01/06/2023] [Indexed: 01/11/2023]
Abstract
Methanotrophs are potent natural producers of several bioactive secondary metabolites (SMs) including isoprenoids, polymers, peptides, and vitamins. Cryptic biosynthetic gene clusters identified from these microbes via genome mining hinted at the vast and hidden SM biosynthetic potential of these microbes. Central carbon metabolism in methanotrophs offers rare pathway intermediate pools that could be further diversified using advanced synthetic biology tools to produce valuable SMs; for example, plant polyketides, rare carotenoids, and fatty acid-derived SMs. Recent advances in pathway reconstruction and production of isoprenoids, squalene, ectoine, polyhydroxyalkanoate copolymer, cadaverine, indigo, and shinorine serve as proof-of-concept. This review provides theoretical guidance for developing methanotrophs as microbial chassis for high-value SMs. We summarize the distinct secondary metabolic potentials of type I and type II methanotrophs, with specific attention to products relevant to biomedical applications. This review also includes native and non-native SMs from methanotrophs, their therapeutic potential, strategies to induce silent biosynthetic gene clusters, and challenges.
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Affiliation(s)
- Ushasree Mrudulakumari Vasudevan
- Department of Chemical Engineering (BK21 FOUR Integrated Engineering Program), Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea
| | - Dung Hoang Anh Mai
- Department of Chemical Engineering (BK21 FOUR Integrated Engineering Program), Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea
| | - Shyam Krishna
- Department of Chemical Engineering (BK21 FOUR Integrated Engineering Program), Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea
| | - Eun Yeol Lee
- Department of Chemical Engineering (BK21 FOUR Integrated Engineering Program), Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea.
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8
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Advances in Genetic Engineering in Improving Photosynthesis and Microalgal Productivity. Int J Mol Sci 2023; 24:ijms24031898. [PMID: 36768215 PMCID: PMC9915242 DOI: 10.3390/ijms24031898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/10/2023] [Accepted: 01/16/2023] [Indexed: 01/21/2023] Open
Abstract
Even though sunlight energy far outweighs the energy required by human activities, its utilization is a key goal in the field of renewable energies. Microalgae have emerged as a promising new and sustainable feedstock for meeting rising food and feed demand. Because traditional methods of microalgal improvement are likely to have reached their limits, genetic engineering is expected to allow for further increases in the photosynthesis and productivity of microalgae. Understanding the mechanisms that control photosynthesis will enable researchers to identify targets for genetic engineering and, in the end, increase biomass yield, offsetting the costs of cultivation systems and downstream biomass processing. This review describes the molecular events that happen during photosynthesis and microalgal productivity through genetic engineering and discusses future strategies and the limitations of genetic engineering in microalgal productivity. We highlight the major achievements in manipulating the fundamental mechanisms of microalgal photosynthesis and biomass production, as well as promising approaches for making significant contributions to upcoming microalgal-based biotechnology.
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9
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Tsvetanova F, Yankov D. Bioactive Compounds from Red Microalgae with Therapeutic and Nutritional Value. Microorganisms 2022; 10:2290. [PMID: 36422361 PMCID: PMC9693049 DOI: 10.3390/microorganisms10112290] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/15/2022] [Accepted: 11/15/2022] [Indexed: 07/29/2023] Open
Abstract
Red microalgae represent a natural reservoir of beneficial substances with applications in different industrial sectors. They are rich in natural biomolecules known for their antihypertensive, antioxidant, antimicrobial, antiviral, anti-inflammatory, antitumor, and anticoagulant activities. Many red microalgae are a source of vitamins, minerals, photochemicals, polyunsaturated fatty acids, and a wide spectrum of polysaccharides. The content of their valuable compounds and their activities have turned red microalgae into cellular factories of special interest in food, nutraceutical, and pharmaceutical industries. Like all microalgae, the red ones are superior to traditional crops for the aims of biotechnology as they are renewable sources widely available in great quantities and are easy to culture. Moreover, some of the most studied red microalgae are generally recognized as safe. This review summarizes the valuable biochemicals from red microalgae and highlights their health and nutritional benefits.
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10
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Caetano PA, do Nascimento TC, Fernandes AS, Nass PP, Vieira KR, Maróstica Junior MR, Jacob-Lopes E, Zepka LQ. Microalgae-based polysaccharides: Insights on production, applications, analysis, and future challenges. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Tounsi L, Hentati F, Ben Hlima H, Barkallah M, Smaoui S, Fendri I, Michaud P, Abdelkafi S. Microalgae as feedstock for bioactive polysaccharides. Int J Biol Macromol 2022; 221:1238-1250. [PMID: 36067848 DOI: 10.1016/j.ijbiomac.2022.08.206] [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: 07/03/2022] [Revised: 08/23/2022] [Accepted: 08/31/2022] [Indexed: 11/30/2022]
Abstract
Due to the increase in industrial demand for new biosourced molecules (notably bioactive exopolysaccharides (EPS)), microalgae are gaining popularity because of their nutraceutical potential and benefits health. Such health effects are delivered by specific secondary metabolites, e.g., pigments, exopolysaccharides, polyunsaturated fatty acids, proteins, and glycolipids. These are suitable for the subsequent uses in cosmetic, nutraceutical, pharmaceutical, biofuels, biological waste treatment, animal feed and food fields. In this regard, a special focus has been given in this review to describe the various methods used for extraction and purification of polysaccharides. The second part of the review provides an up-to-date and comprehensive summary of parameters affecting the microalgae growth and insights to maximize the metabolic output by understanding the intricacies of algal development and polysaccharides production. In the ultimate part, the health and nutraceutical claims associated with marine algal bioactive polysaccharides, explaining their noticeable potential for biotechnological applications, are summarized and comprehensively discussed.
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Affiliation(s)
- Latifa Tounsi
- Laboratoire de Génie Enzymatique et Microbiologie, Équipe de Biotechnologie des Algues, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, 3038 Sfax, Tunisia; Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut Pascal, F-63000 Clermont-Ferrand, France
| | - Faiez Hentati
- Université de Lorraine, INRAE, Unité de Recherche Animal et Fonctionnalités des Produits Animaux (UR AFPA), USC 340, Nancy F-54000, France
| | - Hajer Ben Hlima
- Laboratoire de Génie Enzymatique et Microbiologie, Équipe de Biotechnologie des Algues, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, 3038 Sfax, Tunisia
| | - Mohamed Barkallah
- Laboratoire de Génie Enzymatique et Microbiologie, Équipe de Biotechnologie des Algues, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, 3038 Sfax, Tunisia
| | - Slim Smaoui
- Laboratoire de Microorganismes et de Biomolécules, Centre de Biotechnologie de Sfax, Route Sidi Mansour Km 6 B.P. 117, 3018 Sfax, Tunisia
| | - Imen Fendri
- Laboratoire de Biotechnologie des Plantes Appliquée à l'Amélioration des Cultures, Faculté des Sciences de Sfax, Université de Sfax, 3038 Sfax, Tunisia
| | - Philippe Michaud
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut Pascal, F-63000 Clermont-Ferrand, France
| | - Slim Abdelkafi
- Laboratoire de Génie Enzymatique et Microbiologie, Équipe de Biotechnologie des Algues, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, 3038 Sfax, Tunisia.
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12
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Dvoretsky DS, Temnov MS, Markin IV, Ustinskaya YV, Es’kova MA. Problems in the Development of Efficient Biotechnology for the Synthesis of Valuable Components from Microalgae Biomass. THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING 2022. [DOI: 10.1134/s0040579522040224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Microalgae-derived polysaccharides: Potential building blocks for biomedical applications. World J Microbiol Biotechnol 2022; 38:150. [PMID: 35776270 DOI: 10.1007/s11274-022-03342-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 06/20/2022] [Indexed: 10/17/2022]
Abstract
In recent years, the increasing concern about human health well-being has strongly boosted the search for natural alternatives that can be used in different fields, especially in biomedicine. This has put microalgae-based products in evidence since they contain many bioactive compounds, of which polysaccharides are attractive due to the diverse physicochemical properties and new or improved biological roles they play. Polysaccharides from microalgae, specially exopolysaccharides, are critically important for market purposes because they can be used as anti-inflammatory, immunomodulatory, anti-glycemic, antitumor, antioxidant, anticoagulant, antilipidemic, antiviral, antibacterial, and antifungal agents. Therefore, to obtain higher productivity and competitiveness of these naturally available compounds, the cultivation parameters and the extraction/purification processes must be better optimized in order to bring perspectives for the exploitation of products in commercial and clinical practice. In this sense, the objective of the present review is to elucidate the potential biomedical applications of microalgae-derived polysaccharides. A closer look is taken at the main polysaccharides produced by microalgae, methods of extraction, purification and structural determination, biological activities and their applications, and current status.
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Chen C, Tang T, Shi Q, Zhou Z, Fan J. The potential and challenge of microalgae as promising future food sources. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.06.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Microalgae Bioactive Compounds to Topical Applications Products-A Review. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27113512. [PMID: 35684447 PMCID: PMC9182589 DOI: 10.3390/molecules27113512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 05/21/2022] [Accepted: 05/24/2022] [Indexed: 12/14/2022]
Abstract
Microalgae are complex photosynthetic organisms found in marine and freshwater environments that produce valuable metabolites. Microalgae-derived metabolites have gained remarkable attention in different industrial biotechnological processes and pharmaceutical and cosmetic industries due to their multiple properties, including antioxidant, anti-aging, anti-cancer, phycoimmunomodulatory, anti-inflammatory, and antimicrobial activities. These properties are recognized as promising components for state-of-the-art cosmetics and cosmeceutical formulations. Efforts are being made to develop natural, non-toxic, and environmentally friendly products that replace synthetic products. This review summarizes some potential cosmeceutical applications of microalgae-derived biomolecules, their mechanisms of action, and extraction methods.
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Freyria NJ, Kuo A, Chovatia M, Johnson J, Lipzen A, Barry KW, Grigoriev IV, Lovejoy C. Salinity tolerance mechanisms of an Arctic Pelagophyte using comparative transcriptomic and gene expression analysis. Commun Biol 2022; 5:500. [PMID: 35614207 PMCID: PMC9133084 DOI: 10.1038/s42003-022-03461-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 05/09/2022] [Indexed: 11/09/2022] Open
Abstract
Little is known at the transcriptional level about microbial eukaryotic adaptations to short-term salinity change. Arctic microalgae are exposed to low salinity due to sea-ice melt and higher salinity with brine channel formation during freeze-up. Here, we investigate the transcriptional response of an ice-associated microalgae over salinities from 45 to 8. Our results show a bracketed response of differential gene expression when the cultures were exposed to progressively decreasing salinity. Key genes associated with salinity changes were involved in specific metabolic pathways, transcription factors and regulators, protein kinases, carbohydrate active enzymes, and inorganic ion transporters. The pelagophyte seemed to use a strategy involving overexpression of Na+-H+ antiporters and Na+ -Pi symporters as salinity decreases, but the K+ channel complex at higher salinities. Specific adaptation to cold saline arctic conditions was seen with differential expression of several antifreeze proteins, an ice-binding protein and an acyl-esterase involved in cold adaptation.
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Affiliation(s)
- Nastasia J Freyria
- Département de biologie, Institut de Biologie Intégrative et des Systèmes, Université Laval, Québec, Canada. .,Québec Océan, Département de biologie, Université Laval, Québec, Canada.
| | - Alan Kuo
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Mansi Chovatia
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jenifer Johnson
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Anna Lipzen
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Kerrie W Barry
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Igor V Grigoriev
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.,Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA, 94720, USA
| | - Connie Lovejoy
- Département de biologie, Institut de Biologie Intégrative et des Systèmes, Université Laval, Québec, Canada. .,Québec Océan, Département de biologie, Université Laval, Québec, Canada.
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Jung SH, Zell N, Boßle F, Teipel U, Rauh C, McHardy C, Lindenberger C. Influence of Process Operation on the Production of Exopolysaccharides in Arthrospira platensis and Chlamydomonas asymmetrica. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2022. [DOI: 10.3389/fsufs.2022.883069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Extracellular polysaccharides, or exopolysaccharides are high–molecular weight sugar-based polymers expressed and secreted by many microorganisms. As host organisms, the functions of exopolysaccharides are diverse, ranging from physical protection via biofilm formation, adhesion, and water retention to biological functions that are not entirely understood such as viral attachment inhibition. Industrial applications of exopolysaccharides can be found in food texture modification; for example, utilizing the hydrocolloidal properties of exopolysaccharides for thickening and gelling purposes to improve food quality and texture. Over the last decade, biologically active exopolysaccharides produced by microalgae have received attention for their potential as antiviral, antibacterial and antioxidative compounds and in the applications. However, relatively low yield and productivity are the limiting factors for full-scale industrial application. In this study, the well-known prokaryotic phototrophic microorganism Arthrospira platensis and the comparatively unknown eukaryotic unicellular green alga Chlamydomonas asymmetrica were used to evaluate the influence of different process parameters on exopolysaccharides formation and productivity. In addition to the essential control variables (light and temperature), the influence of operational techniques (batch and turbidostat) were also investigated. Although the two studied algae are differently affected by above parameters. The light intensity was the most influential parameter observed in the study, leading to differences in exopolysaccharides concentrations by a factor of 10, with the highest measured concentration for A. platensis of cEPS = 0.138 g L−1 at 180 μmol m−2 s−1 and for C. asymmetrica of cEPS = 1.2 g L−1 at 1,429 μmol m−2 s−1. In continuous systems, the achieved exopolysaccharides concentrations were low compared to batch process, however, slightly higher productivities were reached. Regardless of all screened process parameters, C. asymmetrica is the better organism in terms of exopolysaccharides concentrations and productivity.
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Gouda M, Tadda MA, Zhao Y, Farmanullah F, Chu B, Li X, He Y. Microalgae Bioactive Carbohydrates as a Novel Sustainable and Eco-Friendly Source of Prebiotics: Emerging Health Functionality and Recent Technologies for Extraction and Detection. Front Nutr 2022; 9:806692. [PMID: 35387198 PMCID: PMC8979111 DOI: 10.3389/fnut.2022.806692] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 02/16/2022] [Indexed: 12/16/2022] Open
Abstract
There is a global interest in the novel consumption, nutritional trends, and the market of new prebiotic sources and their potential functional impacts. Commercially available nutritional supplements based on microalgae that are approved to be edible by FDA, like Arthrospira platensis (Cyanobacteria) and Chlorella vulgaris (Chlorophyta) become widely attractive. Microalgae are rich in carbohydrates, proteins, and polyunsaturated fatty acids that have high bioactivity. Recently, scientists are studying the microalgae polysaccharides (PS) or their derivatives (as dietary fibers) for their potential action as a novel prebiotic source for functional foods. Besides, the microalgae prebiotic polysaccharides are used for medication due to their antioxidant, anticancer, and antihypertensive bioactivities. This review provides an overview of microalgae prebiotics and other macromolecules’ health benefits. The phytochemistry of various species as alternative future sources of novel polysaccharides were mentioned. The application as well as the production constraints and multidisciplinary approaches for evaluating microalgae phytochemistry were discussed. Additionally, the association between this potential of combining techniques like spectroscopic, chromatographic, and electrochemical analyses for microalgae sensation and analysis novelty compared to the chemical methods was emphasized.
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Affiliation(s)
- Mostafa Gouda
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
- Department of Nutrition and Food Science, National Research Centre, Giza, Egypt
- *Correspondence: Mostafa Gouda,
| | - Musa A. Tadda
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
- Department of Agricultural and Environmental Engineering, Faculty of Engineering, Bayero University, Kano, Nigeria
| | - Yinglei Zhao
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
- Institute of Agricultural Equipment, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - F. Farmanullah
- Faculty of Veterinary and Animal Sciences, National Center for Livestock Breeding Genetics and Genomics LUAWMS, Uthal, Pakistan
| | - Bingquan Chu
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, China
| | - Xiaoli Li
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
- *Correspondence: Mostafa Gouda,
| | - Yong He
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
- *Correspondence: Mostafa Gouda,
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Mousavian Z, Safavi M, Azizmohseni F, Hadizadeh M, Mirdamadi S. Characterization, antioxidant and anticoagulant properties of exopolysaccharide from marine microalgae. AMB Express 2022; 12:27. [PMID: 35239029 PMCID: PMC8894541 DOI: 10.1186/s13568-022-01365-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 02/17/2022] [Indexed: 12/02/2022] Open
Abstract
The sulfated exopolysaccharide extracted from marine microalgae attracted considerable attention from both the nutraceutical and pharmaceutical industries. In the present study biomass of five marine microalgae were screened to find strains with high capacity for the production of sulfated exopolysaccharides. The anticoagulant and antioxidant activities of extracted sulfated polysaccharides were evaluated using activated partial thromboplastin time (aPTT), prothrombin time (PT), DPPH and ABTS assays, respectively. The sulfated polysaccharides extracted from Picochlorum sp. showed a strong DPPH scavenging effect with 85% antioxidant activity. The sulfated polysaccharides of Chlorella sorokiniana, Chlorella sp. (L2) and Chlorella sp. (D1) scavenged more than 90% of the ABTS radicals. However, the sulfated polysaccharide extracted from Chlorella sorokiniana, and Chlorella sp. (N4) showed anticoagulant properties. The dual anticoagulant-antioxidant activities in Chlorella sorokiniana could be explained by the combination of various factors including sulfate content and their binding site, monosaccharide residue and glycoside bond which are involved in the polysaccharide’s bioactivity. Sulfated exopolysaccharides (sPS) were extracted from marine green microalgae by the heated acid extraction method. sPS with the higher sulfate/sugar ratio presented potent ABTS radical scavenging activity. Some of the sPS revealed anticoagulant effects in activated partial thromboplastin time (aPTT) and prothrombin time (PT) assays.
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Uma VS, Usmani Z, Sharma M, Diwan D, Sharma M, Guo M, Tuohy MG, Makatsoris C, Zhao X, Thakur VK, Gupta VK. Valorisation of algal biomass to value-added metabolites: emerging trends and opportunities. PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2022; 22:1-26. [PMID: 35250414 PMCID: PMC8889523 DOI: 10.1007/s11101-022-09805-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
Algal biomass is a promising feedstock for sustainable production of a range of value-added compounds and products including food, feed, fuel. To further augment the commercial value of algal metabolites, efficient valorization methods and biorefining channels are essential. Algal extracts are ideal sources of biotechnologically viable compounds loaded with anti-microbial, anti-oxidative, anti-inflammatory, anti-cancerous and several therapeutic and restorative properties. Emerging technologies in biomass valorisation tend to reduce the significant cost burden in large scale operations precisely associated with the pre-treatment, downstream processing and waste management processes. In order to enhance the economic feasibility of algal products in the global market, comprehensive extraction of multi-algal product biorefinery is envisaged as an assuring strategy. Algal biorefinery has inspired the technologists with novel prospectives especially in waste recovery, carbon concentration/sequestration and complete utilisation of the value-added products in a sustainable closed-loop methodology. This review critically examines the latest trends in the algal biomass valorisation and the expansive feedstock potentials in a biorefinery perspective. The recent scope dynamics of algal biomass utilisation such as bio-surfactants, oleochemicals, bio-stimulants and carbon mitigation have also been discussed. The existing challenges in algal biomass valorisation, current knowledge gaps and bottlenecks towards commercialisation of algal technologies are discussed. This review is a comprehensive presentation of the road map of algal biomass valorisation techniques towards biorefinery technology. The global market view of the algal products, future research directions and emerging opportunities are reviewed.
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Affiliation(s)
- V. S. Uma
- Radiological and Environmental Safety Group, Department of Atomic Energy, Indira Gandhi Centre for Atomic Research (IGCAR), Govt of India, Kalpakkam, Tamil Nadu India
| | - Zeba Usmani
- Department of Applied Biology, University of Science and Technology, Meghalaya, 793101 India
| | - Minaxi Sharma
- Department of Applied Biology, University of Science and Technology, Meghalaya, 793101 India
| | - Deepti Diwan
- School of Medicine, Washington University, Saint Louis, MO USA
| | - Monika Sharma
- Department of Botany, Sri Avadh Raj Singh Smarak Degree College, Gonda, UP India
| | - Miao Guo
- Department of Engineering, Faculty of Natural and Mathematical Sciences, King’s College, Strand Campus, The Strand London, London, WC2R 2LS UK
| | - Maria G. Tuohy
- Molecular Glycobiotechnology Group, Biochemistry, School of Natural Sciences, Ryan Institute and MaREI, National University of Ireland, H91 TK33 Galway, Ireland
| | - Charalampos Makatsoris
- Department of Engineering, Faculty of Natural and Mathematical Sciences, King’s College, Strand Campus, The Strand London, London, WC2R 2LS UK
| | - Xiaobin Zhao
- Future Business Cambridge, Cambond Limited, Centre Kings Hedges Road, Cambridge, CB4 2HY UK
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research Center, Scotland’s Rural College (SRUC), Kings Buildings, West Mains Road, EH9 3JG Edinburgh, UK
- School of Engineering, University of Petroleum & Energy Studies (UPES), 248007 Dehradun, India
| | - Vijai Kumar Gupta
- Biorefining and Advanced Materials Research Center, Scotland’s Rural College (SRUC), Kings Buildings, West Mains Road, EH9 3JG Edinburgh, UK
- Center for Safe and Improved Food, Scotland’s Rural College (SRUC), Kings Buildings, West Mains Road, Edinburgh, EH9 3JG UK
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21
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Li J, He Z, Liang Y, Peng T, Hu Z. Insights into Algal Polysaccharides: A Review of Their Structure, Depolymerases, and Metabolic Pathways. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:1749-1765. [PMID: 35124966 DOI: 10.1021/acs.jafc.1c05365] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In recent years, marine macroalgae with extensive biomass have attracted the attention of researchers worldwide. Furthermore, algal polysaccharides have been widely studied in the food, pharmaceutical, and cosmetic fields because of their various kinds of bioactivities. However, there are immense barriers to their application as a result of their high molecular size, poor solubility, hydrocolloid nature, and low physiological activities. Unique polysaccharides, such as laminarin, alginate, fucoidan, agar, carrageenan, porphyran, ulvan, and other complex structural polysaccharides, can be digested by marine bacteria with many carbohydrate-active enzymes (CAZymes) by breaking down the limitation of glycosidic bonds. However, structural elucidation of algal polysaccharides, metabolic pathways, and identification of potential polysaccharide hydrolases that participate in different metabolic pathways remain major obstacles restricting the efficient utilization of algal oligosaccharides. This review focuses on the structure, hydrolase families, metabolic pathways, and potential applications of seven macroalgae polysaccharides. These results will contribute to progressing our understanding of the structure of algal polysaccharides and their metabolic pathways and will be valuable for clearing the way for the compelling utilization of bioactive oligosaccharides.
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Affiliation(s)
- Jin Li
- Department of Biology, College of Science, Shantou University, Shantou, Guangdong 515063, People's Republic of China
| | - Zhixiao He
- Department of Biology, College of Science, Shantou University, Shantou, Guangdong 515063, People's Republic of China
| | - Yumei Liang
- Department of Biology, College of Science, Shantou University, Shantou, Guangdong 515063, People's Republic of China
| | - Tao Peng
- Department of Biology, College of Science, Shantou University, Shantou, Guangdong 515063, People's Republic of China
| | - Zhong Hu
- Department of Biology, College of Science, Shantou University, Shantou, Guangdong 515063, People's Republic of China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, Guangdong 511458, People's Republic of China
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22
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Prospective on the application of abiotic stresses to enhance the industrial production of exopolysaccharides from microalgae. CURRENT RESEARCH IN BIOTECHNOLOGY 2022. [DOI: 10.1016/j.crbiot.2022.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Abstract
The efficient use of natural resources is essential for the planet’s sustainability and ensuring food security. Colombia’s large availability of water resources in combination with its climatic characteristics allows for the development of many microalgae species. The use of microalgae can potentially contribute to sustainable production in support of the agri-food sector. The nutritional composition (proteins, carbohydrates, fatty acids, vitamins, pigments, and antioxidants) of microalgae along with the ease of producing high biomass yields make them an excellent choice for human and animal nutrition and agriculture. Several species of microalgae have been studied seeking to develop food supplements for pigs, ruminants, poultry, fish, crustaceans, rabbits, and even bees. Important benefits to animal health, production, and improved bromatological and organoleptic characteristics of milk, meat, and eggs have been observed. Based on the functional properties of some microalgae species, foods and supplements have also been developed for human nutrition. Moreover, because microalgae contain essential nutrients, they can be utilized as biofertilizers by replacing chemical fertilizers, which are detrimental to the environment. In view of the above, the study of microalgae is a promising research area for the development of biotechnology and bioeconomy in Colombia.
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Santos M, Pacheco CC, Yao L, Hudson EP, Tamagnini P. CRISPRi as a Tool to Repress Multiple Copies of Extracellular Polymeric Substances (EPS)-Related Genes in the Cyanobacterium Synechocystis sp. PCC 6803. Life (Basel) 2021; 11:life11111198. [PMID: 34833074 PMCID: PMC8620461 DOI: 10.3390/life11111198] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 10/28/2021] [Accepted: 11/03/2021] [Indexed: 12/03/2022] Open
Abstract
The use of the versatile cyanobacterial extracellular polymeric substances (EPS) for biotechnological/biomedical applications implies an extensive knowledge of their biosynthetic pathways to improve/control polymer production yields and characteristics. The multiple copies of EPS-related genes, scattered throughout cyanobacterial genomes, adds another layer of complexity, making these studies challenging and time-consuming. Usually, this issue would be tackled by generating deletion mutants, a process that in cyanobacteria is also hindered by the polyploidy. Thus, the use of the CRISPRi multiplex system constitutes an efficient approach to addressing this redundancy. Here, three putative Synechocystis sp. PCC 6803 kpsM homologues (slr0977, slr2107, and sll0574) were repressed using this methodology. The characterization of the 3-sgRNA mutant in terms of fitness/growth and total carbohydrates, released and capsular polysaccharides, and its comparison with previously generated single knockout mutants pointed towards Slr0977 being the key KpsM player in Synechocystis EPS production. This work validates CRISPRi as a powerful tool to unravel cyanobacterial complex EPS biosynthetic pathways expediting this type of studies.
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Affiliation(s)
- Marina Santos
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4000-008 Porto, Portugal; (M.S.); (C.C.P.)
- IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, 4000-008 Porto, Portugal
- Programa Doutoral em Biologia Molecular e Celular (MCbiology), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, 4000-008 Porto, Portugal
| | - Catarina C. Pacheco
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4000-008 Porto, Portugal; (M.S.); (C.C.P.)
- IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, 4000-008 Porto, Portugal
| | - Lun Yao
- Science for Life Laboratory, KTH Royal Institute of Technology, 10004 Stockholm, Sweden; (L.Y.); (E.P.H.)
- Department of Protein Science, KTH Royal Institute of Technology, 10004 Stockholm, Sweden
| | - Elton P. Hudson
- Science for Life Laboratory, KTH Royal Institute of Technology, 10004 Stockholm, Sweden; (L.Y.); (E.P.H.)
- Department of Protein Science, KTH Royal Institute of Technology, 10004 Stockholm, Sweden
| | - Paula Tamagnini
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4000-008 Porto, Portugal; (M.S.); (C.C.P.)
- IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, 4000-008 Porto, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, 4000-008 Porto, Portugal
- Correspondence: ; Tel.: +351-226074957
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Abstract
In view of high energy cost and water consumption in microalgae cultivation, microalgal-biofilm-based cultivation system has been advocated as a solution toward a more sustainable and resource friendlier system for microalgal biomass production. Algal-derived extracellular polymeric substances (EPS) form cohesive network to interconnect the cells and substrates; however, their interactions within the biofilm are poorly understood. This scenario impedes the biofilm process development toward resource recovery. Herein, this review elucidates on various biofilm cultivation modes and contribution of EPS toward biofilm adhesion. Immobilized microalgae can be envisioned by the colloid interactions in terms of a balance of both dispersive and polar interactions among three interfaces (cells, mediums and substrates). Last portion of this review is dedicated to the future perspectives and challenges on the EPS; with regard to the biopolymers extraction, biopolymers’ functional description and cross-referencing between model biofilms and full-scale biofilm systems are evaluated. This review will serve as an informative reference for readers having interest in microalgal biofilm phenomenon by incorporating the three main players in attached cultivation systems: microalgae, EPS and supporting materials. The ability to mass produce these miniature cellular biochemical factories via immobilized biofilm technology will lay the groundwork for a more sustainable and feasible production.
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Affiliation(s)
- Yi Tong Cheah
- School of Chemical Engineering, Engineering Campus, University of Science Malaysia, Nibong Tebal, Penang, Malaysia
| | - Derek Juinn Chieh Chan
- School of Chemical Engineering, Engineering Campus, University of Science Malaysia, Nibong Tebal, Penang, Malaysia
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Microalgae Polysaccharides: An Overview of Production, Characterization, and Potential Applications. POLYSACCHARIDES 2021. [DOI: 10.3390/polysaccharides2040046] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Microalgae and cyanobacteria are photosynthetic microorganisms capable of synthesizing several biocompounds, including polysaccharides with antioxidant, antibacterial, and antiviral properties. At the same time that the accumulation of biomolecules occurs, microalgae can use wastewater and gaseous effluents for their growth, mitigating these pollutants. The increase in the production of polysaccharides by microalgae can be achieved mainly through nutritional limitations, stressful conditions, and/or adverse conditions. These compounds are of commercial interest due to their biological and rheological properties, which allow their application in various sectors, such as pharmaceuticals and foods. Thus, to increase the productivity and competitiveness of microalgal polysaccharides with commercial hydrocolloids, the cultivation parameters and extraction/purification processes have been optimized. In this context, this review addresses an overview of the production, characterization, and potential applications of polysaccharides obtained by microalgae and cyanobacteria. Moreover, the main opportunities and challenges in relation to obtaining these compounds are highlighted.
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Koçer AT, İnan B, Kaptan Usul S, Özçimen D, Yılmaz MT, Işıldak İ. Exopolysaccharides from microalgae: production, characterization, optimization and techno-economic assessment. Braz J Microbiol 2021; 52:1779-1790. [PMID: 34510399 DOI: 10.1007/s42770-021-00575-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 07/07/2021] [Indexed: 11/28/2022] Open
Abstract
Microalgae cultivation for exopolysaccharide production has getting more attention as a result of their high hydrocarbon biosynthesis skill. The aim of this study is to examine the exopolysaccharide production potential of different species of microalgae. In this context, exopolysaccharides were produced from Chlorella minutissima, Chlorella sorokiniana and Botryococcus braunii microalgae and the effects of carbon and nitrogen content in the growth medium and illumination time on exopolysaccharide production were analyzed statistically using Box-Behnken experimental design. In addition, techno-economic assessment of exopolysaccharide production were also performed by using the most productive microalgae and optimum conditions determined in this study. As a result of the experiments, it was seen that C. minutissima, C. sorokiniana and B. braunii produced 0.245 ± 0.0025 g/L, 0.163 ± 0.0016 g/L and 0.117 ± 0.0007 g/L exopolysaccharide, respectively. Statistically, it was observed that there was an inverse relationship between the exopolysaccharide production and investigated parameters such as illumination period and carbon and nitrogen amounts of culture mediums. The techno-economic assessment comprising microalgal exopolysaccharide (EPS) bioprocess was carried out, and it showed that the system can be considered economically viable, yet can be improved with biorefinery approach.
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Affiliation(s)
- Anıl Tevfik Koçer
- Department of Bioengineering, Yıldız Technical University, Istanbul, Turkey
| | - Benan İnan
- Department of Bioengineering, Yıldız Technical University, Istanbul, Turkey.
| | - Sedef Kaptan Usul
- Department of Bioengineering, Gebze Technical University, Kocaeli, Turkey
| | - Didem Özçimen
- Department of Bioengineering, Yıldız Technical University, Istanbul, Turkey
| | | | - İbrahim Işıldak
- Department of Bioengineering, Yıldız Technical University, Istanbul, Turkey
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Gavalás-Olea A, Siol A, Sakka Y, Köser J, Nentwig N, Hauser T, Filser J, Thöming J, Lang I. Potential of the Red Alga Dixoniella grisea for the Production of Additives for Lubricants. PLANTS (BASEL, SWITZERLAND) 2021; 10:1836. [PMID: 34579369 PMCID: PMC8465309 DOI: 10.3390/plants10091836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 08/26/2021] [Accepted: 08/31/2021] [Indexed: 11/16/2022]
Abstract
There is an increasing interest in algae-based raw materials for medical, cosmetic or nutraceutical applications. Additionally, the high diversity of physicochemical properties of the different algal metabolites proposes these substances from microalgae as possible additives in the chemical industry. Among the wide range of natural products from red microalgae, research has mainly focused on extracellular polymers for additive use, while this study also considers the cellular components. The aim of the present study is to analytically characterize the extra- and intracellular molecular composition from the red microalga Dixoniella grisea and to evaluate its potential for being used in the tribological industry. D. grisea samples, fractionated into extracellular polymers (EPS), cells and medium, were examined for their molecular composition. This alga produces a highly viscous polymer, mainly composed of polysaccharides and proteins, being secreted into the culture medium. The EPS and biomass significantly differed in their molecular composition, indicating that they might be used for different bio-additive products. We also show that polysaccharides and proteins were the major chemical compounds in EPS, whereas the content of lipids depended on the separation protocol and the resulting product. Still, they did not represent a major group and were thus classified as a potential valuable side-product. Lyophilized algal fractions obtained from D. grisea were found to be not toxic when EPS were not included. Upon implementation of EPS as a commercial product, further assessment on the environmental toxicity to enchytraeids and other soil organisms is required. Our results provide a possible direction for developing a process to gain an environmentally friendly bio-additive for application in the tribological industry based on a biorefinery approach.
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Affiliation(s)
- Antonio Gavalás-Olea
- Algae Biotechnology, Institute of EcoMaterials, Bremerhaven University of Applied Sciences, An der Karlstadt 8, D-27568 Bremerhaven, Germany; (A.G.-O.); (T.H.)
| | - Antje Siol
- Center for Environmental Research and Sustainable Technology (UFT), Department Chemical Process Engineering (CVT), University of Bremen, Leobener Straße 6, D-28359 Bremen, Germany; (A.S.); (J.K.); (J.T.)
| | - Yvonne Sakka
- Center for Environmental Research and sustainable Technology (UFT), Department General and Theoretical Ecology (ÖKO), University of Bremen, Leobener Straße 6, D-28359 Bremen, Germany; (Y.S.); (N.N.); (J.F.)
| | - Jan Köser
- Center for Environmental Research and Sustainable Technology (UFT), Department Chemical Process Engineering (CVT), University of Bremen, Leobener Straße 6, D-28359 Bremen, Germany; (A.S.); (J.K.); (J.T.)
| | - Nina Nentwig
- Center for Environmental Research and sustainable Technology (UFT), Department General and Theoretical Ecology (ÖKO), University of Bremen, Leobener Straße 6, D-28359 Bremen, Germany; (Y.S.); (N.N.); (J.F.)
| | - Thomas Hauser
- Algae Biotechnology, Institute of EcoMaterials, Bremerhaven University of Applied Sciences, An der Karlstadt 8, D-27568 Bremerhaven, Germany; (A.G.-O.); (T.H.)
| | - Juliane Filser
- Center for Environmental Research and sustainable Technology (UFT), Department General and Theoretical Ecology (ÖKO), University of Bremen, Leobener Straße 6, D-28359 Bremen, Germany; (Y.S.); (N.N.); (J.F.)
| | - Jorg Thöming
- Center for Environmental Research and Sustainable Technology (UFT), Department Chemical Process Engineering (CVT), University of Bremen, Leobener Straße 6, D-28359 Bremen, Germany; (A.S.); (J.K.); (J.T.)
| | - Imke Lang
- Algae Biotechnology, Institute of EcoMaterials, Bremerhaven University of Applied Sciences, An der Karlstadt 8, D-27568 Bremerhaven, Germany; (A.G.-O.); (T.H.)
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Castro-Muñoz R, García-Depraect O. Membrane-Based Harvesting Processes for Microalgae and Their Valuable-Related Molecules: A Review. MEMBRANES 2021; 11:membranes11080585. [PMID: 34436347 PMCID: PMC8400455 DOI: 10.3390/membranes11080585] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 11/21/2022]
Abstract
The interest in microalgae production deals with its role as the third generation of feedstock to recover renewable energy. Today, there is a need to analyze the ultimate research and advances in recovering the microalgae biomass from the culture medium. Therefore, this review brings the current research developments (over the last three years) in the field of harvesting microalgae using membrane-based technologies (including microfiltration, ultrafiltration and forward osmosis). Initially, the principles of membrane technologies are given to outline the main parameters influencing their operation. The main strategies adopted by the research community for the harvesting of microalgae using membranes are subsequently addressed, paying particular attention to the novel achievements made for improving filtration performance and alleviating fouling. Moreover, this contribution also gives an overview of the advantages of applying membrane technologies for the efficient extraction of the high added-value compounds in microalgae cells, such as lipids, proteins and carbohydrates, which together with the production of renewable biofuels could boost the development of more sustainable and cost-effective microalgae biorefineries.
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Affiliation(s)
- Roberto Castro-Muñoz
- Tecnologico de Monterrey, Campus Toluca, Avenida Eduardo Monroy Cárdenas 2000 San Antonio Buenavista, Toluca de Lerdo 50110, Mexico
- Department of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland
- Correspondence: (R.C.-M.); (O.G.-D.)
| | - Octavio García-Depraect
- Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina, s/n, 47011 Valladolid, Spain
- Correspondence: (R.C.-M.); (O.G.-D.)
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Hizikia fusiformis: Pharmacological and Nutritional Properties. Foods 2021; 10:foods10071660. [PMID: 34359532 PMCID: PMC8306711 DOI: 10.3390/foods10071660] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 07/13/2021] [Accepted: 07/15/2021] [Indexed: 02/07/2023] Open
Abstract
The brown seaweed Hizikia fusiformis (syn. Sargassum fusiforme), commonly known as “Hijiki”, has been utilized in traditional cuisine and medicine in East Asian countries for several centuries. H. fusiformis has attracted much attention owing to its rich nutritional and pharmacological properties. However, there has been no comprehensive review of the nutritional and pharmacological properties of H. fusiformis. The aim of this systematic review was to provide detailed information from the published literature on the nutritional and pharmacological properties of H. fusiformis. A comprehensive online search of the literature was conducted by accessing databases, such as PubMed, SpringerLink, ScienceDirect, and Google Scholar, for published studies on the nutritional and pharmacological properties of H. fusiformis between 2010 and 2021. A total of 916 articles were screened from all the databases using the preferred reporting items for systematic reviews and meta-analyses method. Screening based on the setdown criteria resulted in 59 articles, which were used for this review. In this review, we found that there has been an increase in the number of publications on the pharmacological and nutritional properties of H. fusiformis over the last 10 years. In the last 10 years, studies have focused on the proximate, mineral, polysaccharide, and bioactive compound composition, and pharmacological properties, such as antioxidant, anticancer, antitumor, anti-inflammatory, photoprotective, neuroprotective, antidiabetic, immunomodulatory, osteoprotective, and gastroprotective properties of H. fusiformis extracts. Overall, further studies and strategies are required to develop H. fusiformis as a promising resource for the nutrition and pharmacological industries.
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Extracellular Polymeric Substances (EPS) as Microalgal Bioproducts: A Review of Factors Affecting EPS Synthesis and Application in Flocculation Processes. ENERGIES 2021. [DOI: 10.3390/en14134007] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Microalgae are natural resources of intracellular compounds with a wide spectrum of applications in, e.g., the food industry, pharmacy, and biofuel production. The extracellular polymeric substances (EPS) released by microalgal cells are a valuable bioproduct. Polysaccharides, protein, lipids, and DNA are the main constituents of EPS. This review presents the recent advances in the field of the determinants of the synthesis of extracellular polymeric substances by microalgal cells and the EPS structure. Physical and chemical culture conditions have been analyzed to achieve useful insights into the development of a strategy optimizing EPS production by microalgal cells. The application of microalgal EPS for flocculation and mechanisms involved in this process are also discussed in terms of biomass harvesting. Additionally, the ability of EPS to remove toxic heavy metals has been analyzed. With their flocculation and sorption properties, microalgal EPS are a promising bioproduct that can potentially be used in harvesting algal biomass and wastewater management.
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Sandgruber F, Gielsdorf A, Baur AC, Schenz B, Müller SM, Schwerdtle T, Stangl GI, Griehl C, Lorkowski S, Dawczynski C. Variability in Macro- and Micronutrients of 15 Commercially Available Microalgae Powders. Mar Drugs 2021; 19:md19060310. [PMID: 34071995 PMCID: PMC8228358 DOI: 10.3390/md19060310] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/22/2021] [Accepted: 05/24/2021] [Indexed: 11/17/2022] Open
Abstract
The nutrient composition of 15 commercially available microalgae powders of Arthrospira platensis, Chlorella pyrenoidosa and vulgaris, Dunaliella salina, Haematococcus pluvialis, Tetraselmis chuii, and Aphanizomenon flos-aquae was analyzed. The Dunaliella salina powders were characterized by a high content of carbohydrates, saturated fatty acids (SFAs), omega-6-polyunsaturated fatty acids (n6-PUFAs), heavy metals, and α-tocopherol, whereas the protein amounts, essential amino acids (EAAs), omega-3-PUFAs (n3-PUFAs), vitamins, and minerals were low. In the powder of Haematococcus pluvialis, ten times higher amounts of carotenoids compared to all other analyzed powders were determined, yet it was low in vitamins D and E, protein, and EAAs, and the n6/n3-PUFAs ratio was comparably high. Vitamin B12, quantified as cobalamin, was below 0.02 mg/100 g dry weight (d.w.) in all studied powders. Based on our analysis, microalgae such as Aphanizomenon and Chlorella may contribute to an adequate intake of critical nutrients such as protein with a high content of EAAs, dietary fibers, n3-PUFAs, Ca, Fe, Mg, and Zn, as well as vitamin D and E. Yet, the nutritional value of Aphanizomenon flos-aquae was slightly decreased by high contents of SFAs. The present data show that microalgae are rich in valuable nutrients, but the macro- and micronutrient profiles differ strongly between and within species.
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Affiliation(s)
- Fabian Sandgruber
- Junior Research Group Nutritional Concepts, Institute of Nutritional Science, Friedrich Schiller University Jena, Dornburger Str. 29, 07743 Jena, Germany; (F.S.); (B.S.)
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Jena-Halle-Leipzig, Dornburger Str. 25, 07743 Jena, Germany; (G.I.S.); (S.L.)
| | - Annekathrin Gielsdorf
- Competence Center Algal Biotechnology, Anhalt University of Applied Science, Bernburger Straße 55, 06366 Köthen, Germany; (A.G.); (C.G.)
| | - Anja C. Baur
- Institute of Agricultural and Nutritional Science, Martin Luther University Halle-Wittenberg, Theodor-Lieser-Str. 11, 06120 Halle, Germany;
| | - Benjamin Schenz
- Junior Research Group Nutritional Concepts, Institute of Nutritional Science, Friedrich Schiller University Jena, Dornburger Str. 29, 07743 Jena, Germany; (F.S.); (B.S.)
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Jena-Halle-Leipzig, Dornburger Str. 25, 07743 Jena, Germany; (G.I.S.); (S.L.)
| | - Sandra Marie Müller
- Department of Food Chemistry, Institute of Nutritional Science, University of Potsdam, Arthur-Scheunert-Allee 114–116, 14558 Nuthetal, Germany; (S.M.M.); (T.S.)
| | - Tanja Schwerdtle
- Department of Food Chemistry, Institute of Nutritional Science, University of Potsdam, Arthur-Scheunert-Allee 114–116, 14558 Nuthetal, Germany; (S.M.M.); (T.S.)
- NutriAct-Competence Cluster Nutrition Research, Berlin-Potsdam, Arthur-Scheunert-Allee 114–116, 14558 Nuthetal, Germany
| | - Gabriele I. Stangl
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Jena-Halle-Leipzig, Dornburger Str. 25, 07743 Jena, Germany; (G.I.S.); (S.L.)
- Institute of Agricultural and Nutritional Science, Martin Luther University Halle-Wittenberg, Theodor-Lieser-Str. 11, 06120 Halle, Germany;
| | - Carola Griehl
- Competence Center Algal Biotechnology, Anhalt University of Applied Science, Bernburger Straße 55, 06366 Köthen, Germany; (A.G.); (C.G.)
| | - Stefan Lorkowski
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Jena-Halle-Leipzig, Dornburger Str. 25, 07743 Jena, Germany; (G.I.S.); (S.L.)
- Institute of Nutritional Science, Friedrich Schiller University Jena, Dornburger Str. 25, 07743 Jena, Germany
| | - Christine Dawczynski
- Junior Research Group Nutritional Concepts, Institute of Nutritional Science, Friedrich Schiller University Jena, Dornburger Str. 29, 07743 Jena, Germany; (F.S.); (B.S.)
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Jena-Halle-Leipzig, Dornburger Str. 25, 07743 Jena, Germany; (G.I.S.); (S.L.)
- Correspondence: ; Tel.: +49-(3641)-9-49656
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Tong C, Derek C. Biofilm formation of benthic diatoms on commercial polyvinylidene fluoride membrane. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102260] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Barros de Medeiros VP, da Costa WKA, da Silva RT, Pimentel TC, Magnani M. Microalgae as source of functional ingredients in new-generation foods: challenges, technological effects, biological activity, and regulatory issues. Crit Rev Food Sci Nutr 2021; 62:4929-4950. [PMID: 33544001 DOI: 10.1080/10408398.2021.1879729] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Microalgae feasibility as food ingredients or source of nutrients and/or bioactive compounds and their health effects have been widely studied. This review aims to provide an overview of the use of microalgae biomass in food products, the technological effects of its incorporation, and their use as a source of health-promoting bioactive compounds. In addition, it presents the regulatory aspects of commercialization and consumption, and the main trends and market challenges Microalgae have stood out as sources of nutritional compounds (polysaccharides, proteins, lipids, vitamins, minerals, and dietary fiber) and biologically active compounds (asthaxanthin, β-carotene, omega-3 fatty acids). The consumption of microalgae biomass proved to have several health effects, such as hypoglycemic activity, gastroprotective and anti-steatotic properties, improvements in neurobehavioral and cognitive dysfunction, and hypolipidemic properties. Its addition to food products can improve the nutritional value, aroma profile, and technological properties, with important alterations on the syneresis of yogurts, meltability in cheeses, overrun values and melting point in ice creams, physical properties and mechanical characteristics in crisps, and texture, cooking and color characteristics in pastas. However, more studies are needed to prove the health effects in humans, expand the market size, reduce the cost of production, and tighter constraints related to regulations.
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Affiliation(s)
- Viviane Priscila Barros de Medeiros
- Laboratory of Microbial Processes in Foods, Department of Food Engineering, Technology Center, Federal University of Paraíba, João Pessoa, Brazil
| | - Whyara Karoline Almeida da Costa
- Laboratory of Microbial Processes in Foods, Department of Food Engineering, Technology Center, Federal University of Paraíba, João Pessoa, Brazil
| | - Ruthchelly Tavares da Silva
- Laboratory of Microbial Processes in Foods, Department of Food Engineering, Technology Center, Federal University of Paraíba, João Pessoa, Brazil
| | | | - Marciane Magnani
- Laboratory of Microbial Processes in Foods, Department of Food Engineering, Technology Center, Federal University of Paraíba, João Pessoa, Brazil
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González-Hourcade M, Del Campo EM, Casano LM. The Under-explored Extracellular Proteome of Aero-Terrestrial Microalgae Provides Clues on Different Mechanisms of Desiccation Tolerance in Non-Model Organisms. MICROBIAL ECOLOGY 2021; 81:437-453. [PMID: 32989484 DOI: 10.1007/s00248-020-01604-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 09/16/2020] [Indexed: 06/11/2023]
Abstract
Trebouxia sp. (TR9) and Coccomyxa simplex (Csol) are desiccation-tolerant lichen microalgae with different adaptive strategies in accordance with the prevailing conditions of their habitats. The remodelling of cell wall and extracellular polysaccharides depending on water availability are key elements in the tolerance to desiccation of both microalgae. Currently, there is no information about the extracellular proteins of these algae and other aero-terrestrial microalgae in response to limited water availability. To our knowledge, this is the first report on the proteins associated with the extracellular polymeric substances (EPS) of aero-terrestrial microalgae subjected to cyclic desiccation/rehydration. LC-MS/MS and bioinformatic analyses of the EPS-associated proteins in the two lichen microalgae submitted to four desiccation/rehydration cycles allowed the compilation of 111 and 121 identified proteins for TR9 and Csol, respectively. Both sets of EPS-associated proteins shared a variety of predicted biological functions but showed a constitutive expression in Csol and partially inducible in TR9. In both algae, the EPS-associated proteins included a number of proteins of unknown functions, some of which could be considered as small intrinsically disordered proteins related with desiccation-tolerant organisms. Differences in the composition and the expression pattern between the studied EPS-associated proteins would be oriented to preserve the biochemical and biophysical properties of the extracellular structures under the different conditions of water availability in which each alga thrives.
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Affiliation(s)
| | - Eva M Del Campo
- Department of Life Sciences, University of Alcalá, 28805, Alcalá de Henares, Madrid, Spain.
| | - Leonardo M Casano
- Department of Life Sciences, University of Alcalá, 28805, Alcalá de Henares, Madrid, Spain
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Ugya AY, Hasan DB, Ari HA, Ajibade FO, Imam TS, Abba A, Hua X. Natural freshwater microalgae biofilm as a tool for the clean-up of water resulting from mining activities. ALL LIFE 2020. [DOI: 10.1080/26895293.2020.1844307] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Adamu Yunusa Ugya
- Key Lab of Groundwater Resources and Environment of Ministry of Education, Key Lab of Water Resources and Aquatic Environment of Jilin Province, College of New Energy and Environment, Jilin University, Changchun, People’s Republic of China
- Department of Environmental Management, Kaduna State University, Kaduna, Nigeria
| | | | - Hadiza Abdullahi Ari
- Key Lab of Groundwater Resources and Environment of Ministry of Education, Key Lab of Water Resources and Aquatic Environment of Jilin Province, College of New Energy and Environment, Jilin University, Changchun, People’s Republic of China
- Faculty of Sciences, National Open University of Nigeria, Lagos, Nigeria
| | - Fidelis Odedishemi Ajibade
- Department of Civil and Environmental Engineering, Federal University of Technology Akure, Akure, Nigeria
- Key Lab of Environmental Biotechnology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, People’s Republic of China
| | | | - Abidina Abba
- Department of Biological Sciences, Federal University Lokoja, Anyigba, Nigeria
| | - Xiuyi Hua
- Key Lab of Groundwater Resources and Environment of Ministry of Education, Key Lab of Water Resources and Aquatic Environment of Jilin Province, College of New Energy and Environment, Jilin University, Changchun, People’s Republic of China
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Hentati F, Tounsi L, Djomdi D, Pierre G, Delattre C, Ursu AV, Fendri I, Abdelkafi S, Michaud P. Bioactive Polysaccharides from Seaweeds. Molecules 2020; 25:E3152. [PMID: 32660153 PMCID: PMC7397078 DOI: 10.3390/molecules25143152] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 07/06/2020] [Accepted: 07/07/2020] [Indexed: 02/08/2023] Open
Abstract
Bioactive compounds with diverse chemical structures play a significant role in disease prevention and maintenance of physiological functions. Due to the increase in industrial demand for new biosourced molecules, several types of biomasses are being exploited for the identification of bioactive metabolites and techno-functional biomolecules that are suitable for the subsequent uses in cosmetic, food and pharmaceutical fields. Among the various biomasses available, macroalgae are gaining popularity because of their potential nutraceutical and health benefits. Such health effects are delivered by specific diterpenes, pigments (fucoxanthin, phycocyanin, and carotenoids), bioactive peptides and polysaccharides. Abundant and recent studies have identified valuable biological activities of native algae polysaccharides, but also of their derivatives, including oligosaccharides and (bio)chemically modified polysaccharides. However, only a few of them can be industrially developed and open up new markets of active molecules, extracts or ingredients. In this respect, the health and nutraceutical claims associated with marine algal bioactive polysaccharides are summarized and comprehensively discussed in this review.
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Affiliation(s)
- Faiez Hentati
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut Pascal, F-63000 Clermont-Ferrand, France; (F.H.); (L.T.); (G.P.); (C.D.); (A.V.U.)
- Laboratoire de Génie Enzymatique et Microbiologie, Équipe de Biotechnologie des Algues, Département Génie Biologique, Ecole Nationale d’Ingénieurs de Sfax, Université de Sfax, Sfax 3038, Tunisie;
| | - Latifa Tounsi
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut Pascal, F-63000 Clermont-Ferrand, France; (F.H.); (L.T.); (G.P.); (C.D.); (A.V.U.)
| | - Djomdi Djomdi
- Department of Renewable Energy, National Advanced School of Engineering of Maroua, University of Maroua, P.O. Box 46 Maroua, Cameroon;
| | - Guillaume Pierre
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut Pascal, F-63000 Clermont-Ferrand, France; (F.H.); (L.T.); (G.P.); (C.D.); (A.V.U.)
| | - Cédric Delattre
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut Pascal, F-63000 Clermont-Ferrand, France; (F.H.); (L.T.); (G.P.); (C.D.); (A.V.U.)
- Institut Universitaire de France (IUF), 1 rue Descartes, 75005 Paris, France
| | - Alina Violeta Ursu
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut Pascal, F-63000 Clermont-Ferrand, France; (F.H.); (L.T.); (G.P.); (C.D.); (A.V.U.)
| | - Imen Fendri
- Laboratoire de Biotechnologie des Plantes Appliquée à l’Amélioration des Cultures, Faculté des Sciences de Sfax, Université de Sfax, Sfax 3038, Tunisie;
| | - Slim Abdelkafi
- Laboratoire de Génie Enzymatique et Microbiologie, Équipe de Biotechnologie des Algues, Département Génie Biologique, Ecole Nationale d’Ingénieurs de Sfax, Université de Sfax, Sfax 3038, Tunisie;
| | - Philippe Michaud
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut Pascal, F-63000 Clermont-Ferrand, France; (F.H.); (L.T.); (G.P.); (C.D.); (A.V.U.)
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Exopolysaccharides from Cyanobacteria: Strategies for Bioprocess Development. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10113763] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Cyanobacteria have the potential to become an industrially sustainable source of functional biopolymers. Their exopolysaccharides (EPS) harbor chemical complexity, which predicts bioactive potential. Although some are reported to excrete conspicuous amounts of polysaccharides, others are still to be discovered. The production of this strain-specific trait can promote carbon neutrality while its intrinsic location can potentially reduce downstream processing costs. To develop an EPS cyanobacterial bioprocess (Cyano-EPS) three steps were explored: the selection of the cyanobacterial host; optimization of production parameters; downstream processing. Studying the production parameters allow us to understand and optimize their response in terms of growth and EPS production though many times it was found divergent. Although the extraction of EPS can be achieved with a certain degree of simplicity, the purification and isolation steps demand experience. In this review, we gathered relevant research on EPS with a focus on bioprocess development. Challenges and strategies to overcome possible drawbacks are highlighted.
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The Follow-up Photobioreactor Illumination System for the Cultivation of Photosynthetic Microorganisms. ENERGIES 2020. [DOI: 10.3390/en13051143] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The article presents the basic conceptual assumptions of a photobioreactor with a complementary lighting system. The cylindrical bioreactor has three independent, interconnected, and fully controlled lighting systems. A characteristic feature is the combination of the lighting system with the measurement of photosynthetically active PAR (photosynthetically active radiation) and the optical density of the culture medium. The entire lighting system is based on RGBW (“red, green, blue, white”) LED and RBG (“red, green, blue”) LEDs. The pilot study was conducted on a simplified prototype of a photobioreactor designed for the distribution and optimization of light in algae cultures designed for energy purposes. The study was carried out on microalgae Chlorella Vulgaris BA0002a from the collection of marine algae cultures.
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