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Koletti A, Skliros D, Kalloniati C, Marka S, Zografaki ME, Infante C, Mantecón L, Flemetakis E. Global omics study of Tetraselmis chuii reveals time-related metabolic adaptations upon oxidative stress. Appl Microbiol Biotechnol 2024; 108:138. [PMID: 38229403 DOI: 10.1007/s00253-023-12936-z] [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: 08/03/2023] [Revised: 11/26/2023] [Accepted: 12/01/2023] [Indexed: 01/18/2024]
Abstract
Microalgae species encounter oxidative stress in their natural environments, prompting the development of species-specific adaptation mechanisms. Understanding these mechanisms can offer valuable insights for biotechnological applications in microalgal metabolic manipulation. In this study, we investigated the response of Tetraselmis chuii, an industrially important microalga, to H2O2-induced oxidative stress. Exposure to 0.5-mM H2O2 resulted in reduced cell viability, and higher concentrations led to a drastic decline. After 1 h of exposure to H2O2, photosynthetic capacity (Qy) was negatively impacted, and this reduction intensified after 6 h of continuous stress. Global multi-omics analysis revealed that T. chuii rapidly responded to H2O2-induced oxidative stress within the first hour, causing significant changes in both transcriptomic and metabolomic profiles. Among the cellular functions negatively affected were carbon and energy flow, with photosynthesis-related PSBQ having a 2.4-fold downregulation, pyruvate kinase decreased by 1.5-fold, and urea content reduced by threefold. Prolonged exposure to H2O2 incurred a high energy cost, leading to unsuccessful attempts to enhance carbon metabolism, as depicted, for example, by the upregulation of photosystems-related PETC and PETJ by more than twofold. These findings indicate that T. chuii quickly responds to oxidative stress, but extended exposure can have detrimental effects on its cellular functions. KEY POINTS: • 0.5-mM H2O2-induced oxidative stress strongly affects T. chuii • Distinct short- and long-term adaptation mechanisms are induced • Major metabolic adaptations occur within the first hour of exposure.
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Affiliation(s)
- Aikaterini Koletti
- Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, 11855, Athens, Greece
| | - Dimitrios Skliros
- Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, 11855, Athens, Greece
| | - Chrysanthi Kalloniati
- Department of Marine Sciences, University of the Aegean, University Hill 81100, Mytilene, Greece
| | - Sofia Marka
- Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, 11855, Athens, Greece
| | - Maria-Eleftheria Zografaki
- Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, 11855, Athens, Greece
| | - Carlos Infante
- Fitoplancton Marino, S.L., Dársena Comercial S/N (Muelle Pesquero), 11500, El Puerto de Santa María (Cádiz), Spain
| | - Lalia Mantecón
- Fitoplancton Marino, S.L., Dársena Comercial S/N (Muelle Pesquero), 11500, El Puerto de Santa María (Cádiz), Spain
| | - Emmanouil Flemetakis
- Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, 11855, Athens, Greece.
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2
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Yang Q, Ran Y, Guo Y, Zeng J, Song Y, Qiao D, Xu H, Cao Y. Enhancement of lipid synthesis by the transcription factor Asg1 in Saitozyma podzolica zwy-2-3 under dissolved oxygen stress. BIORESOURCE TECHNOLOGY 2024; 411:131312. [PMID: 39168414 DOI: 10.1016/j.biortech.2024.131312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2024] [Revised: 08/15/2024] [Accepted: 08/17/2024] [Indexed: 08/23/2024]
Abstract
Microbial oils have been of considerable interest as food additives and biofuel resources due to high lipid contents, but lipid accumulation of oleaginous microorganisms can be induced by environmental stresses, such as dissolved oxygen (DO), which limit large-scale lipid production. Here, DO stress gave rise to the endogenous nitric oxide (NO) level to mediate S-nitrosylation of SpAsg1, regulating the lipid accumulation in Saitozyma podzolica zwy-2-3. Notably, qRT-PCR, yeast one-hybrid, dual-luciferase reporter assays, and metabolomics analysis exhibited that overexpression of SpAsg1 promoted lipid synthesis by directly regulation of glucose metabolism, enhancing glucose uptake, ATP and NADPH contents under DO stress. Meanwhile, SpAsg1 improved the antioxidant capacity to reduce the intracellular reactive oxygen species (ROS) and NO levels. Overall, we systematically investigated the regulation of SpAsg1 on lipid metabolism of S. podzolica zwy-2-3 under DO stress, which sheds light on further studies for alleviating oxygen limitation of lipid production in microbial industry.
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Affiliation(s)
- Qingzhuoma Yang
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu, Sichuan 610065, China
| | - Yulu Ran
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu, Sichuan 610065, China
| | - Yihan Guo
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu, Sichuan 610065, China
| | - Jie Zeng
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu, Sichuan 610065, China
| | - Yao Song
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu, Sichuan 610065, China
| | - Dairong Qiao
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu, Sichuan 610065, China
| | - Hui Xu
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu, Sichuan 610065, China.
| | - Yi Cao
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu, Sichuan 610065, China.
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Xu Y, Peng BY, Zhang X, Xu Q, Yang L, Chen J, Zhou X, Zhang Y. The aging of microplastics exacerbates the damage to photosynthetic performance and bioenergy production in microalgae (Chlorella pyrenoidosa). WATER RESEARCH 2024; 259:121841. [PMID: 38820734 DOI: 10.1016/j.watres.2024.121841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 03/20/2024] [Accepted: 05/25/2024] [Indexed: 06/02/2024]
Abstract
The toxicity of microplastics (MPs) on freshwater plants has been widely studied, yet the influence of aged MPs remains largely unexplored. Herein, we investigated the influence of polyvinyl chloride (PVC) MPs, both before and after aging, at different environmentally relevant concentrations on Chlorella pyrenoidosa, a freshwater microalgae species widely recognized as a valuable biomass resource. During a 96-h period, both virgin and aged MPs hindered the growth of C. pyrenoidosa. The maximum growth inhibition rates were 32.40 % for virgin PVC at 250 mg/L and 44.72 % for aged PVC at 100 mg/L, respectively. Microalgae intracellular materials, i.e., protein and carbohydrate contents, consistently decreased after MP exposure, with more pronounced inhibition observed with aged PVC. Meanwhile, the MP aging significantly promoted the nitrogen uptake of C. pyrenoidosa, i.e., 1693.45 ± 42.29 mg/L (p < 0.01), contributing to the production of humic acid-like substances. Additionally, aged PVC induced lower chlorophyll a and Fv/Fm when compared to virgin PVC, suggesting a more serious inhibition of the photosynthesis process of microalgae. The toxicity of MPs to C. pyrenoidosa was strongly associated with intercellular oxidative stress levels. The results indicate that MP aging exacerbates the damage to photosynthetic performance and bioenergy production in microalgae, providing critical insights into the toxicity analysis of micro(nano)plastics on freshwater plants.
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Affiliation(s)
- Yazhou Xu
- National Engineering Research Center of Protected Agriculture, Shanghai Engineering Research Center of Protected Agriculture, Tongji University, Shanghai 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Bo-Yu Peng
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Xu Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Science, Shanghai 201403, China
| | - Qianfeng Xu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Libin Yang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
| | - Jiabin Chen
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China
| | - Xuefei Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China
| | - Yalei Zhang
- National Engineering Research Center of Protected Agriculture, Shanghai Engineering Research Center of Protected Agriculture, Tongji University, Shanghai 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China; Key Laboratory of Rural Toilet and Sewage Treatment Technology, Ministry of Agriculture and Rural Affairs, Shanghai 200092, China.
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4
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Stanić M, Jevtović M, Kovačević S, Dimitrijević M, Danilović Luković J, McIntosh OA, Zechmann B, Lizzul AM, Spasojević I, Pittman JK. Low-dose ionizing radiation generates a hormetic response to modify lipid metabolism in Chlorella sorokiniana. Commun Biol 2024; 7:821. [PMID: 38969726 PMCID: PMC11226653 DOI: 10.1038/s42003-024-06526-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 06/28/2024] [Indexed: 07/07/2024] Open
Abstract
Algal biomass is a viable source of chemicals and metabolites for various energy, nutritional, medicinal and agricultural uses. While stresses have commonly been used to induce metabolite accumulation in microalgae in attempts to enhance high-value product yields, this is often very detrimental to growth. Therefore, understanding how to modify metabolism without deleterious consequences is highly beneficial. We demonstrate that low-doses (1-5 Gy) of ionizing radiation in the X-ray range induces a non-toxic, hormetic response in microalgae to promote metabolic activation. We identify specific radiation exposure parameters that give reproducible metabolic responses in Chlorella sorokiniana caused by transcriptional changes. This includes up-regulation of >30 lipid metabolism genes, such as genes encoding an acetyl-CoA carboxylase subunit, phosphatidic acid phosphatase, lysophosphatidic acid acyltransferase, and diacylglycerol acyltransferase. The outcome is an increased lipid yield in stationary phase cultures by 25% in just 24 hours, without any negative effects on cell viability or biomass.
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Affiliation(s)
- Marina Stanić
- University of Belgrade-Institute for Multidisciplinary Research, Life Sciences Department, Belgrade, Serbia
| | - Mima Jevtović
- University of Belgrade-Institute for Multidisciplinary Research, Life Sciences Department, Belgrade, Serbia
- Innovative Centre of the Faculty of Chemistry, University of Belgrade, Belgrade, Serbia
| | - Snežana Kovačević
- University of Belgrade-Institute for Multidisciplinary Research, Life Sciences Department, Belgrade, Serbia
| | - Milena Dimitrijević
- University of Belgrade-Institute for Multidisciplinary Research, Life Sciences Department, Belgrade, Serbia
| | - Jelena Danilović Luković
- University of Belgrade-Institute for Multidisciplinary Research, Life Sciences Department, Belgrade, Serbia
- Institute for Application of Nuclear Energy-INEP, University of Belgrade, Belgrade, Serbia
| | - Owen A McIntosh
- Department of Earth and Environmental Sciences, School of Natural Sciences, The University of Manchester, Manchester, UK
| | - Bernd Zechmann
- Center for Microscopy and Imaging, Baylor University, Waco, TX, USA
| | | | - Ivan Spasojević
- University of Belgrade-Institute for Multidisciplinary Research, Life Sciences Department, Belgrade, Serbia.
| | - Jon K Pittman
- Department of Earth and Environmental Sciences, School of Natural Sciences, The University of Manchester, Manchester, UK.
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5
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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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6
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Kayani SI, -Rahman SU, Shen Q, Cui Y, Liu W, Hu X, Zhu F, Huo S. Molecular approaches to enhance astaxanthin biosynthesis; future outlook: engineering of transcription factors in Haematococcus pluvialis. Crit Rev Biotechnol 2024; 44:514-529. [PMID: 37380353 DOI: 10.1080/07388551.2023.2208284] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 01/02/2023] [Accepted: 03/10/2023] [Indexed: 06/30/2023]
Abstract
Microalgae are the preferred species for producing astaxanthin because they pose a low toxicity risk than chemical synthesis. Astaxanthin has multiple health benefits and is being used in: medicines, nutraceuticals, cosmetics, and functional foods. Haematococcus pluvialis is a model microalga for astaxanthin biosynthesis; however, its natural astaxanthin content is low. Therefore, it is necessary to develop methods to improve the biosynthesis of astaxanthin to meet industrial demands, making its commercialization cost-effective. Several strategies related to cultivation conditions are employed to enhance the biosynthesis of astaxanthin in H. pluvialis. However, the mechanism of its regulation by transcription factors is unknown. For the first time, this study critically reviewed the studies on identifying transcription factors, progress in H. pluvialis genetic transformation, and use of phytohormones that increase the gene expression related to astaxanthin biosynthesis. In addition, we propose future approaches, including (i) Cloning and characterization of transcription factors, (ii) Transcriptional engineering through overexpression of positive regulators or downregulation/silencing of negative regulators, (iii) Gene editing for enrichment or deletion of transcription factors binding sites, (iv) Hormonal modulation of transcription factors. This review provides considerable knowledge about the molecular regulation of astaxanthin biosynthesis and the existing research gap. Besides, it provides the basis for transcription factors mediated metabolic engineering of astaxanthin biosynthesis in H. pluvialis.
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Affiliation(s)
- Sadaf-Ilyas Kayani
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- Joint International Research Laboratory of Metabolic and Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Saeed-Ur -Rahman
- Joint International Research Laboratory of Metabolic and Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Qian Shen
- Joint International Research Laboratory of Metabolic and Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Yi Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Wei Liu
- Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Xinjuan Hu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Feifei Zhu
- School of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Shuhao Huo
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
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7
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Chu G, Wang Q, Gao C, Zhang Z, Jin C, Chen W, Lu S, Guo L, Gao M. Performance evaluation and metagenomic analysis of sequencing batch reactor under transient 2,4,6-trichlorophenol shock. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:133983. [PMID: 38471376 DOI: 10.1016/j.jhazmat.2024.133983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 03/14/2024]
Abstract
The transient chlorophenol shock under some emergency conditions might directly affect the pollutant removal of bioreactor. Therefore, the recovery of bioreactor performance after transient chlorophenol shock is a noteworthy issue. In the present research, the performance, antioxidant response, microbial succession and functional genes of sequencing batch reactor (SBR) were evaluated under transient 2,4,6-trichlorophenol (2,4,6-TCP) shock. The chemical oxygen demand (COD) and ammonia nitrogen (NH4+-N) removal efficiencies decreased sharply in the first 4 days after 60 mg/L 2,4,6-TCP shock for 24 h and gradually recovered to normal in the subsequent 8 days. The nitrogen removal rates and their corresponding enzymatic activities rapidly decreased after transient 2,4,6-TCP shock and then gradually increased to normal. The increase of antioxidant enzymatic activity, Cu-Zn SOD genes and Fe-Mn SOD genes contributed to the recovery of SBR performance. The abundance of genes encoding ammonia monooxygenase and hydroxylamine dehydrogenase decreased after transient 2,4,6-TCP shock, including amoA, amoC and nxrA. Thauera, Dechloromonas and Candidatus_Competibacter played key roles in the restorative process, which provided stable abundances of narG, norB , norC and nosZ. The results will deeply understand into the effect of transient 2,4,6-TCP shock on bioreactor performance and provide theoretical basis to build promising recoveries strategy of bioreactor performance.
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Affiliation(s)
- Guangyu Chu
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China
| | - Qianzhi Wang
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Chang Gao
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Zhiming Zhang
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China
| | - Chunji Jin
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China.
| | - Wenzheng Chen
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Shuailing Lu
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Liang Guo
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Mengchun Gao
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China.
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8
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Ayoka TO, Nwachukwu N, Ene AC, Igwe CU, Nnadi CO. The Hepatocurative Effects of Zanthoxylum zanthoxyloides Alkaloids on Tetrachloromethane-Induced Hepatotoxicity on Albino Rats. Indian J Clin Biochem 2024; 39:188-196. [PMID: 38577140 PMCID: PMC10987411 DOI: 10.1007/s12291-022-01095-z] [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: 05/20/2022] [Accepted: 10/19/2022] [Indexed: 11/15/2022]
Abstract
The study investigated the hepatocurative activity of the bulk alkaloids of Zanthoxylum zanthoxyloides in a tetrachloromethane (CCl4)-induced hepatotoxicity model in rats. The hepatocurative activity of the alkaloids at 200, 400 and 600 mg/kg doses was demonstrated by the assay of both enzymic and non-enzymic parameters. Sections of the liver were also subjected to histological examinations. Mapping techniques and data visualization approaches were adopted in finding relationships between the enzymic and non-enzymic parameters and the treatment groups. The bulk alkaloids caused dose-dependent effects on both the enzymic and non-enzymic parameters. The bulk alkaloids elicited a significant reduction (p < 0.05) in all liver and antioxidant enzymes activities compared with the untreated. The 600 mg/kg dose caused the restoration of the ALP, ALT and AST to 76.16, 10.72 and 11.83 iU/L respectively similar to the standard butylated hydroxytoluene. The 600 mg/kg dose also caused a slight increase in the activities of SOD, catalase and GPx to 11.45. 1.37 and 11.66 iU/L respectively when compared with the untreated rats. In the non-enzymic assays, the 600 mg/kg dose elicited a significant (p < 0.05) upregulation in the total bilirubin (1.18 mg/100 mL), total protein (3.75 g/dL), HDL (1.80 mMol/L) and vitamin C (2.41 mg/dL) and decrease in the CHOL (3.35 g/dL), TAG (1.85 mMol/L), LDL (0.67 mMol/L), BUN (39.55 mg/dL) and MDA (1.13 nMol/mL) when compared with the untreated rats. The restoration of the natural histo-architecture of the CCl4-damaged liver by the alkaloids further evidenced the hepatocurative activity of the bulk alkaloids.
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Affiliation(s)
- Thecla Okeahunwa Ayoka
- Department of Science Laboratory Technology (Biochemistry Unit), Faculty of Physical Sciences, University of Nigeria, Nsukka, Enugu State Nigeria
| | - Ngwu Nwachukwu
- Department of Biochemistry, School of Biological Sciences, Federal University of Technology, Owerri, Imo State Nigeria
| | - Aloysius Chinedu Ene
- Department of Biochemistry, School of Biological Sciences, Federal University of Technology, Owerri, Imo State Nigeria
| | - Chidi Uzoma Igwe
- Department of Biochemistry, School of Biological Sciences, Federal University of Technology, Owerri, Imo State Nigeria
| | - Charles Okeke Nnadi
- Department of Pharmaceutical and Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, Enugu State Nigeria
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9
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Guendouzi S, Benmati M, Bounabi H, Vicente Carbajosa J. Application of response surface Methodology coupled with Artificial Neural network and genetic algorithm to model and optimize symbiotic interactions between Chlorella vulgaris and Stutzerimonas stutzeri strain J3BG for chlorophyll accumulation. BIORESOURCE TECHNOLOGY 2024; 394:130148. [PMID: 38086458 DOI: 10.1016/j.biortech.2023.130148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 11/29/2023] [Accepted: 12/01/2023] [Indexed: 12/17/2023]
Abstract
Research on microalgae has surged due to its diverse biotechnological applications and capacity for accumulating bioactive compounds. Despite considerable advancements, microalgal cultivation remains costly, prompting efforts to reduce expenses while enhancing productivity. This study proposes a cost-effective approach through the coculture of microalgae and bacteria, exploiting mutualistic interactions. An engineered consortium of Chlorella vulgaris and Stutzerimonas stutzeri strain J3BG demonstrated biofilm-like arrangements, indicative of direct cell-to-cell interactions and metabolite exchange. Strain J3BG's enzymatic characterization revealed amylase, lipase, and protease production, sustaining mutual growth. Employing Response Surface Methodology (RSM), Artificial Neural Network (ANN), and Genetic Algorithm (GA) in a hybrid modeling approach resulted in a 2.1-fold increase in chlorophyll production. Optimized conditions included a NaNO3 concentration of 128.52 mg/l, a 1:2 (Algae:Bacteria) ratio, a 6-day cultivation period, and a pH of 5.4, yielding 10.92 ± 0.88 mg/l chlorophyll concentration.
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Affiliation(s)
- Salma Guendouzi
- Higher National School of Biotechnology Taoufik KHAZNADAR, nouveau Pôle universitaire Ali Mendjeli, BP. E66, Constantine 25100, Algeria; Laboratory of Biotechnology, Higher National School of Biotechnology Taoufik KHAZNADAR, nouveau Pôle universitaire Ali Mendjeli, BP. E66, Constantine 25100, Algeria.
| | - Mahbouba Benmati
- Higher National School of Biotechnology Taoufik KHAZNADAR, nouveau Pôle universitaire Ali Mendjeli, BP. E66, Constantine 25100, Algeria
| | - Hadjira Bounabi
- Higher National School of Biotechnology Taoufik KHAZNADAR, nouveau Pôle universitaire Ali Mendjeli, BP. E66, Constantine 25100, Algeria; Laboratory of Biotechnology, Higher National School of Biotechnology Taoufik KHAZNADAR, nouveau Pôle universitaire Ali Mendjeli, BP. E66, Constantine 25100, Algeria
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10
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Aslanbay Guler B, Demirel Z, Imamoglu E. Induction of antioxidant activities of Arthrospira platensis and Chlorella vulgaris by modified culture conditions. Bioprocess Biosyst Eng 2024; 47:275-287. [PMID: 38286864 DOI: 10.1007/s00449-023-02963-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 12/22/2023] [Indexed: 01/31/2024]
Abstract
Microalgae are considered a promising source for obtaining natural compounds with strong antioxidant activity. Despite the great progress made in this field, there is still need for further studies applying simple and cost-effective modifications to reveal their full potential and enhance antioxidant properties. Arthrospira platensis and Chlorella vulgaris are some of the most common cells studied for this purpose. In this study, it was aimed to develop a bioprocess for the enhancement of antioxidant properties of these two microalgae by evaluating the effect of different culture conditions. With this aim, the impacts of light intensity/reactive oxygen species and nitrogen sources/reactive oxygen species were evaluated for the A. platensis and C. vulgaris cells, respectively. Results showed that the antioxidant potential of A. platensis was found to be correlated with the phycocyanin and total phenolic content of cells, and 80 µmol photons m-2 s-1 light intensity induced antioxidant activity in a two-step cultivation mode. For C. vulgaris cells, maximum antioxidant activities of 68.10 ± 1.51% and 75.68 ± 0.66% were obtained in cultures with NH4Cl (0.016% (w/v)) for DPPH and ABTS assays, respectively. The applied oxidative stress factors exhibited different effects on the antioxidant activities of the cells because of their cellular morphologies and changing mechanisms of reactive oxygen species. These outcomes show the potential of applied modifications on cells and suggest a promising route to enhance antioxidant activities of microalgae for further research.
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Affiliation(s)
- Bahar Aslanbay Guler
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100, Izmir, Turkey.
| | - Zeliha Demirel
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100, Izmir, Turkey
| | - Esra Imamoglu
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100, Izmir, Turkey
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11
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Gaysina LA. Influence of pH on the Morphology and Cell Volume of Microscopic Algae, Widely Distributed in Terrestrial Ecosystems. PLANTS (BASEL, SWITZERLAND) 2024; 13:357. [PMID: 38337891 PMCID: PMC10857513 DOI: 10.3390/plants13030357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/16/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024]
Abstract
Terrestrial algae are a group of photosynthetic organisms that can survive in extreme conditions. pH is one of the most important factors influencing the distribution of algae in both aquatic and terrestrial ecosystems. The impact of different pH levels on the cell volume and other morphological characteristics of authentic and reference strains of Chlorella vulgaris, Bracteacoccus minor, Pseudoccomyxa simplex, Chlorococcum infusionum, and Vischeria magna were studied. Chlorella vulgaris, Pseudoccomyxa simplex, and Vischeria magna were the most resistant species, retaining their morphology in the range of pH 4-11.5 and pH 3.5-11, respectively. The change in pH towards acidic and alkaline levels caused an increase in the volume of Pseudoccomixa simplex and Vischeria magna cells, according to a polynomial regression model. The volume of Chlorella vulgaris cells increased from a low to high pH according to a linear regression model. Changes in pH levels did not have a significant impact on the volume of Bracteacoccus minor and Chlorococcum infusionum cells. Low and high levels of pH caused an increase in oil-containing substances in Vischeria magna and Bracteacoccus minor cells. Our study revealed a high resistance of the studied species to extreme pH levels, which allows for us to recommend these strains for broader use in biotechnology and conservation studies of natural populations.
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Affiliation(s)
- Lira A. Gaysina
- Department of Bioecology and Biological Education, M. Akmullah Bashkir State Pedagogical University, 450008 Ufa, Russia;
- All-Russian Research Institute of Phytopathology, 143050 Bolshye Vyazemy, Russia
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12
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Bergman I, Lindström ES, Sassenhagen I. Ciliate Grazing on the Bloom-Forming Microalga Gonyostomum semen. MICROBIAL ECOLOGY 2024; 87:33. [PMID: 38236289 PMCID: PMC10796478 DOI: 10.1007/s00248-024-02344-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 01/03/2024] [Indexed: 01/19/2024]
Abstract
The freshwater raphidophyte Gonyostomum semen forms extensive summer blooms in northern European humic lakes. The development of these blooms might be facilitated by a lack of natural top-down control, as few zooplankton species are able to prey on these large algal cells (up to 100 μm) that expel trichocysts upon physical stress. In this study, we describe a small ciliate species (< 17 μm) that preys on G. semen by damaging the cell membrane until cytoplasm and organelles spill out. Sequencing of clonal cultures of the ciliate tentatively identified it as the prostomatid species Urotricha pseudofurcata. Grazing experiments illustrated that feeding by U. cf. pseudofurcata can significantly reduce cell concentrations of the microalga. However, differences in cell size and growth rate between two investigated ciliate strains resulted in noticeably different grazing pressure. Environmental sequencing data from five different lakes supported potential interactions between the two species. Urotricha cf. pseudofurcata might, thus, play an important role in aquatic ecosystems that are regularly dominated by G. semen, reducing the abundance of this bloom-forming microalga and enabling transfer of organic carbon to higher trophic levels.
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Affiliation(s)
- Ingrid Bergman
- Department of Ecology and Genetics/Limnology, Uppsala University, Uppsala, Sweden
| | - Eva S Lindström
- Department of Ecology and Genetics/Limnology, Uppsala University, Uppsala, Sweden
| | - Ingrid Sassenhagen
- Department of Ecology and Genetics/Limnology, Uppsala University, Uppsala, Sweden.
- Biological Oceanography, Institute for Baltic Sea Research in Warnemünde, Seestraße 15, Rostock, 18119, Germany.
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13
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Suparmaniam U, Lam MK, Lim JW, Tan IS, Chin BLF, Shuit SH, Lim S, Pang YL, Kiew PL. Abiotic stress as a dynamic strategy for enhancing high value phytochemicals in microalgae: Critical insights, challenges and future prospects. Biotechnol Adv 2024; 70:108280. [PMID: 37944570 DOI: 10.1016/j.biotechadv.2023.108280] [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: 03/12/2023] [Revised: 10/29/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023]
Abstract
Microalgae showcase an extraordinary capacity for synthesizing high-value phytochemicals (HVPCs), offering substantial potential for diverse applications across various industries. Emerging research suggests that subjecting microalgae to abiotic stress during cultivation and the harvesting stages can further enhance the accumulation of valuable metabolites within their cells, including carotenoids, antioxidants, and vitamins. This study delves into the pivotal impacts of manipulating abiotic stress on microalgae yields, with a particular focus on biomass and selected HVPCs that have received limited attention in the existing literature. Moreover, approaches to utilising abiotic stress to increase HVPCs production while minimising adverse effects on biomass productivity were discussed. The present study also encompasses a techno-economic assessment (TEA) aimed at pinpointing significant bottlenecks in the conversion of microalgae biomass into high-value products and evaluating the desirability of various conversion pathways. The TEA methodology serves as a valuable tool for both researchers and practitioners in the quest to identify sustainable strategies for transforming microalgae biomass into high-value products and goods. Overall, this comprehensive review sheds light on the pivotal role of abiotic stress in microalgae cultivation, promising insights that could lead to more efficient and sustainable approaches for HVPCs production.
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Affiliation(s)
- Uganeeswary Suparmaniam
- Chemical Engineering Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia; HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
| | - Man Kee Lam
- Chemical Engineering Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia; HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia.
| | - Jun Wei Lim
- HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia; Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
| | - Inn Shi Tan
- Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT250, 98009 Miri, Sarawak, Malaysia
| | - Bridgid Lai Fui Chin
- Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT250, 98009 Miri, Sarawak, Malaysia; Energy and Environment Research Cluster, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009 Miri, Sarawak, Malaysia
| | - Siew Hoong Shuit
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, 43000, Selangor, Malaysia
| | - Steven Lim
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, 43000, Selangor, Malaysia
| | - Yean Ling Pang
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, 43000, Selangor, Malaysia
| | - Peck Loo Kiew
- Department of Chemical and Environmental Engineering, Malaysia - Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur, Malaysia
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14
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Zhang L, Wang B, Zhang L, Lian L, Cheng X, Yang Z, Jin Y, Chen J, Ren Z, Qi Y, Chen F, Wu D, Wang L. Responses of Chlorella vulgaris to the native bacteria in real wastewater: Improvement in wastewater treatment and lipid production. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 339:122737. [PMID: 37838313 DOI: 10.1016/j.envpol.2023.122737] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 10/16/2023]
Abstract
Alga-bacterium interaction can improve wastewater treatment efficiency. To unravel the mystery of the interaction between microalgae and bacteria in wastewater, mono-cultures and co-cultures of Chlorella vulgaris and native bacteria in pretreated biochemical wastewater from landfill leachate were investigated. The results showed that the microalgae selected dominant commensal bacteria, creating a further reduction in species richness for the co-culture, which in turn aids in the dominant commensal bacteria's survival, thereby enhancing algal and bacterial metabolic activity. Strikingly, the lipid productivity of Chlorella in co-culture - namely 41.5 mg/L·d - was 1.4 times higher than in algal monoculture. Additionally, pollutant removal was enhanced in co-cultures, attributed to the bacterial community associated with pollutants' degradation. Furthermore, this study provides an important advance towards observations on the migration and transformation pathways of nutrients and metals, and bridges the gap in algal-bacterial synergistic mechanisms in real wastewater, laying the theoretical foundation for improving wastewater treatment.
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Affiliation(s)
- Lijie Zhang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Bo Wang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Libin Zhang
- School of Civil Engineering, Tianjin University, Tianjin, 300072, China
| | - Lu Lian
- Shandong Institute for Product Quality Inspection, Jinan, 250102, China
| | - Xiaoxiang Cheng
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Zhigang Yang
- Resources and Environment Innovation Institute, Shandong Jianzhu University, Jinan, 250101, China
| | - Yan Jin
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Junren Chen
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Zian Ren
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Yuejun Qi
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Feiyong Chen
- Resources and Environment Innovation Institute, Shandong Jianzhu University, Jinan, 250101, China
| | - Daoji Wu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Lin Wang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China.
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15
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Ray A, Kundu P, Ghosh A. Reconstruction of a Genome-Scale Metabolic Model of Scenedesmus obliquus and Its Application for Lipid Production under Three Trophic Modes. ACS Synth Biol 2023; 12:3463-3481. [PMID: 37852251 DOI: 10.1021/acssynbio.3c00516] [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] [Indexed: 10/20/2023]
Abstract
Green microalgae have emerged as beneficial feedstocks for biofuel production. A systems-level understanding of the biochemical network is needed to harness the microalgal metabolic capacity for bioproduction. Genome-scale metabolic modeling (GEM) showed immense potential in rational metabolic engineering, utilizing biochemical flux distribution analysis. Here, we report the first GEM for the green microalga, Scenedesmus obliquus (iAR632), a promising biodiesel feedstock with high lipid-storing capability. iAR632 comprises 1467 reactions, 734 metabolites, and 632 genes distributed among 7 compartments. The model was optimized under three different trophic modes of microalgal cultivation, i.e., autotrophy, mixotrophy, and heterotrophy. The robustness of the reconstructed network was confirmed by analyzing its sensitivity to the biomass components. Pathway-level flux profiles were analyzed, and significant flux space expansion was noticed majorly in reactions associated with lipid biosynthesis. In agreement with the experimental observation, iAR632 predicted about 3.8-fold increased biomass and almost 4-fold higher lipid under mixotrophy than the other trophic modes. Thus, the assessment of the condition-specific metabolic flux distribution of iAR632 suggested that mixotrophy is the preferred cultivation condition for improved microalgal growth and lipid production. Overall, the reconstructed GEM and subsequent analyses will provide a systematic framework for developing model-driven strategies to improve microalgal bioproduction.
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Affiliation(s)
- Ayusmita Ray
- P.K. Sinha Centre for Bioenergy and Renewables, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Pritam Kundu
- School of Energy Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Amit Ghosh
- School of Energy Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
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16
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Zhu J, Cai Y, Wakisaka M, Yang Z, Yin Y, Fang W, Xu Y, Omura T, Yu R, Zheng ALT. Mitigation of oxidative stress damage caused by abiotic stress to improve biomass yield of microalgae: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 896:165200. [PMID: 37400020 DOI: 10.1016/j.scitotenv.2023.165200] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/15/2023] [Accepted: 06/27/2023] [Indexed: 07/05/2023]
Abstract
Microalgae have been recognized as emerging cell factories due to the high value-added bio-products. However, the balance between algal growth and the accumulation of metabolites is always the main contradiction in algal biomass production. Hence, the security and effectiveness of regulating microalgal growth and metabolism simultaneously have drawn substantial attention. Since the correspondence between microalgal growth and reactive oxygen species (ROS) level has been confirmed, improving its growth under oxidative stress and promoting biomass accumulation under non-oxidative stress by exogenous mitigators is feasible. This paper first introduced ROS generation in microalgae and described the effects of different abiotic stresses on the physiological and biochemical status of microalgae from these aspects associated with growth, cell morphology and structure, and antioxidant system. Secondly, the role of exogenous mitigators with different mechanisms in alleviating abiotic stress was concluded. Finally, the possibility of exogenous antioxidants regulating microalgal growth and improving the accumulation of specific products under non-stress conditions was discussed.
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Affiliation(s)
- Jiangyu Zhu
- School of Food Science and Engineering, Yangzhou University, No. 196 Huayang West Road, Hanjiang District, Yangzhou 225127, China; Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Fukuoka 808-0196, Japan.
| | - Yifei Cai
- School of Food Science and Engineering, Yangzhou University, No. 196 Huayang West Road, Hanjiang District, Yangzhou 225127, China
| | - Minato Wakisaka
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Fukuoka 808-0196, Japan; Food Study Centre, Fukuoka Women's University, 1-1-1 Kasumigaoka, Fukuoka 813-8529, Japan.
| | - Zhengfei Yang
- School of Food Science and Engineering, Yangzhou University, No. 196 Huayang West Road, Hanjiang District, Yangzhou 225127, China
| | - Yongqi Yin
- School of Food Science and Engineering, Yangzhou University, No. 196 Huayang West Road, Hanjiang District, Yangzhou 225127, China
| | - Weiming Fang
- School of Food Science and Engineering, Yangzhou University, No. 196 Huayang West Road, Hanjiang District, Yangzhou 225127, China
| | - Yan Xu
- School of Food Science and Engineering, Yangzhou University, No. 196 Huayang West Road, Hanjiang District, Yangzhou 225127, China
| | - Taku Omura
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Ruihui Yu
- School of International Trade, Anhui University of Finance and Economics, Bengbu 233030, China
| | - Alvin Lim Teik Zheng
- Faculty of Humanities, Management and Science, Universiti Putra Malaysia Bintulu Campus, Bintulu, Sarawak 97008, Malaysia
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17
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Chen W, Liu J, Chu G, Wang Q, Zhang Y, Gao C, Gao M. Comparative evaluation of four Chlorella species treating mariculture wastewater under different photoperiods: Nitrogen removal performance, enzyme activity, and antioxidant response. BIORESOURCE TECHNOLOGY 2023; 386:129511. [PMID: 37468008 DOI: 10.1016/j.biortech.2023.129511] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/14/2023] [Accepted: 07/16/2023] [Indexed: 07/21/2023]
Abstract
The nitrogen removal performance, nitrogen metabolism enzyme activities, and antioxidant response of four Chlorella species (Chlorella sp., Chlorella vulgaris, Chlorella sorokiniana, and Chlorella protothecoides) were compared under different light: dark (L:D) photoperiods during treating mariculture wastewater. The increase of light duration in the range of 8L:16D to 16L:8D was beneficial to the chlorophyll synthesis of selected four Chlorella species. Chlorella vulgaris was the most effective to treat mariculture wastewater than Chlorella sp., Chlorella sorokiniana, and Chlorella protothecoides. and its microalgae density, photosynthetic activity, and nitrogen metabolism enzyme activity were higher than those of the other three Chlorella species. An obvious oxidative stress in microalgal cells was under 20L:4D photoperiod, which led to a decrease in photosynthetic activity and nitrogen metabolizing enzyme activity. Among the four Chlorella species, Chlorella protothecoides had the highest degree of light-induced stress and ROS accumulation. This study can provide suitable microalgae and optimal photoperiod for treating mariculture wastewater.
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Affiliation(s)
- Wenzheng Chen
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China; College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Jiateng Liu
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China; College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Guangyu Chu
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Qianzhi Wang
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Yuqiao Zhang
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Chang Gao
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Mengchun Gao
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China; College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China.
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18
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Abidizadegan M, Blomster J, Peltomaa E. Effect of micronutrient iron on bioactive compounds isolated from cryptophytes. FRONTIERS IN PLANT SCIENCE 2023; 14:1208724. [PMID: 37575946 PMCID: PMC10413267 DOI: 10.3389/fpls.2023.1208724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 07/07/2023] [Indexed: 08/15/2023]
Abstract
Iron is one of the important micronutrients affecting algal growth due to its fundamental role in the physiological processes, including photosynthetic electron transport, respiration, and nitrogen fixation. In this study, the effect of different iron levels on growth and the production of bioactive compounds (phycoerythrin (PE), extracellular polymeric substances (EPS), and phenolic compounds (PCs)) of five cryptophyte strains were investigated. Also, the antioxidant capacity of the bioactive compounds was explored. The results showed species-specific responses to the impact of iron on growth of cryptophytes and accumulation of bioactive compounds. The growth rates of C. pyrenoidifera and Cryptomonas sp. varied significantly at different iron levels, and a reduction in the PE content was observed for several cryptophytes cultured at the highest iron level. However, no significant differences were detected in EPS content at different iron levels. Differences in PC contents of C. pyrenoidifera and Cryptomonas sp. at medium iron level were statistically significant compared with the other two treatments. The results also revealed species-specific differences in antioxidant activity at different iron levels; each studied strain followed its own pattern in response to change in iron level, and each bioactive compound had a different antioxidant activity. Overall, however, PCs demonstrated higher antioxidant activity than PE and EPS. In summary, iron has an impact on growth, bioactive compound accumulation, and antioxidant activity. However, the species-specific responses to changes in iron level should not be ignored when modifying culture conditions for optimal harvest of bioactive compounds.
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Affiliation(s)
- Maryam Abidizadegan
- Ecosystem and Environment Research Program, Faculty of Biological and Environmental Sciences, University of Helsinki, Lahti, Finland
| | - Jaanika Blomster
- Ecosystem and Environment Research Program, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Elina Peltomaa
- Department of Forest Sciences, University of Helsinki, Helsinki, Finland
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19
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Fathy WA, AbdElgawad H, Hashem AH, Essawy E, Tawfik E, Al-Askar AA, Abdelhameed MS, Hammouda O, Elsayed KNM. Exploring Exogenous Indole-3-acetic Acid's Effect on the Growth and Biochemical Profiles of Synechocystis sp. PAK13 and Chlorella variabilis. Molecules 2023; 28:5501. [PMID: 37513371 PMCID: PMC10385099 DOI: 10.3390/molecules28145501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/16/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Microalgae have garnered scientific interest for their potential to produce bioactive compounds. However, the large-scale industrial utilization of microalgae faces challenges related to production costs and achieving optimal growth conditions. Thus, this study aimed to investigate the potential role of exogenous indole-3-acetic acid (IAA) application in improving the growth and production of bioactive metabolites in microalgae. To this end, the study employed different concentrations of exogenously administered IAA ranging from 0.36 µM to 5.69 µM to assess its influence on the growth and biochemical composition of Synechocystis and Chlorella. IAA exposure significantly increased IAA levels in both strains. Consequentially, improved biomass accumulation in parallel with increased total pigment content by approximately eleven-fold in both strains was observed. Furthermore, the application of IAA stimulated the accumulation of primary metabolites. Sugar levels were augmented, providing a carbon source that facilitated amino acid and fatty acid biosynthesis. As a result, amino acid levels were enhanced as well, leading to a 1.55-fold increase in total amino acid content in Synechocystis and a 1.42-fold increase in Chlorella. Total fatty acids content increased by 1.92-fold in Synechocystis and by 2.16-fold in Chlorella. Overall, the study demonstrated the effectiveness of exogenously adding IAA as a strategy for enhancing the accumulation of microalgae biomass and biomolecules. These findings contribute to the advancement of microalgae-based technologies, opening new avenues to produce economically important compounds derived from microalgae.
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Affiliation(s)
- Wael A Fathy
- Botany and Microbiology Department, Faculty of Science, Beni Suef University, Beni Suef 62511, Egypt
- Doctoral School of Biology, Faculty of Science and Informatics, University of Szeged, 6720 Szeged, Hungary
| | - Hamada AbdElgawad
- Botany and Microbiology Department, Faculty of Science, Beni Suef University, Beni Suef 62511, Egypt
- Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, BE-2020 Antwerp, Belgium
| | - Amr H Hashem
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt
| | - Ehab Essawy
- Biochemistry Division, Chemistry Department, Faculty of Science, Helwan University, Helwan 11795, Egypt
| | - Eman Tawfik
- Botany and Microbiology Department, Faculty of Science, Helwan University, Helwan 11795, Egypt
| | - Abdulaziz A Al-Askar
- Department of Botany and Microbiology, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohamed S Abdelhameed
- Botany and Microbiology Department, Faculty of Science, Beni Suef University, Beni Suef 62511, Egypt
| | - Ola Hammouda
- Botany and Microbiology Department, Faculty of Science, Beni Suef University, Beni Suef 62511, Egypt
| | - Khaled N M Elsayed
- Botany and Microbiology Department, Faculty of Science, Beni Suef University, Beni Suef 62511, Egypt
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20
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Wang N, Pei H, Xiang W, Li T, Lin S, Wu J, Chen Z, Wu H, Li C, Wu H. Rapid Screening of Microalgae as Potential Sources of Natural Antioxidants. Foods 2023; 12:2652. [PMID: 37509744 PMCID: PMC10378671 DOI: 10.3390/foods12142652] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/03/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
In order to rapidly screen microalgae species as feedstocks for antioxidants, extracts were obtained from 16 microalgae strains (under 11 genera, 7 classes) using two methods: a one-step extraction with ethanol/water and a three-step fractionating procedure using hexane, ethylacetate, and water successively. Measuring the total phenol content (TPC), total carotenoid content (TCC), and antioxidant activity of the extracts, indicating TPC and TCC, played an important role in determining the antioxidant activity of the microalgae. A weighted scoring system was used to evaluate the antioxidant activity, and the scores of microalgal samples from two extraction methods were calculated using the same system. Among the investigated microalgae, Euglena gracilis SCSIO-46781 had the highest antioxidant score, contributing to high TPC and TCC, followed by Arthrospira platensis SCSIO-44012, Nannochloropsis sp. SCSIO-45224, Phaeodactylum tricornutum SCSIO-45120, and Nannochloropsis sp. SCSIO-45006, respectively. Additionally, the above-mentioned five strains are currently being applied in commercial production, indicating this system could be effective not only for screening microalgal antioxidants, but also for screening microalgal species/strains with strong adaptation to environmental stress, which is a critical trait for their commercial cultivation.
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Affiliation(s)
- Na Wang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, Institution of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haiwei Pei
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, Institution of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenzhou Xiang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, Institution of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), No. 1119, Haibin Road, Nansha District, Guangzhou 511458, China
| | - Tao Li
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, Institution of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), No. 1119, Haibin Road, Nansha District, Guangzhou 511458, China
| | - Shengjie Lin
- Guangzhou Keneng Cosmetic Scientific Research Co., Ltd., Guanghzou 510800, China
| | - Jiayi Wu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, Institution of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), No. 1119, Haibin Road, Nansha District, Guangzhou 511458, China
| | - Zishuo Chen
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, Institution of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Houbo Wu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, Institution of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), No. 1119, Haibin Road, Nansha District, Guangzhou 511458, China
| | - Chuanmao Li
- Guangzhou Keneng Cosmetic Scientific Research Co., Ltd., Guanghzou 510800, China
| | - Hualian Wu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, Institution of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), No. 1119, Haibin Road, Nansha District, Guangzhou 511458, China
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21
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Wu K, Atasoy M, Zweers H, Rijnaarts H, Langenhoff A, Fernandes TV. Impact of wastewater characteristics on the removal of organic micropollutants by Chlorella sorokiniana. JOURNAL OF HAZARDOUS MATERIALS 2023; 453:131451. [PMID: 37086668 DOI: 10.1016/j.jhazmat.2023.131451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/05/2023] [Accepted: 04/18/2023] [Indexed: 05/03/2023]
Abstract
Microalgae-based technologies can be used for the removal of organic micropollutants (OMPs) from different types of wastewater. However, the effect of wastewater characteristics on the removal is still poorly understood. In this study, the removal of sixteen OMPs by Chlorella sorokiniana, cultivated in three types of wastewater (anaerobically digested black water (AnBW), municipal wastewater (MW), and secondary clarified effluent (SCE)), were assessed. During batch operational mode, eleven OMPs were removed from AnBW and MW. When switching from batch to continuous mode (0.8 d HRT), the removal of most OMPs from AnBW and MW decreased, suggesting that a longer retention time enhances the removal of some OMPs. Most OMPs were not removed from SCE since poor nutrient availability limited C. sorokiniana growth. Further correlation analyses between wastewater characteristics, biomass and OMPs removal indicated that the wastewater soluble COD and biomass concentration predominantly affected the removal of OMPs. Lastly, carbon uptake rate had a higher effect on the removal of OMPs than nitrogen and phosphate uptake rate. These data will give an insight on the implementation of microalgae-based technologies for the removal of OMPs in wastewater with varying strengths and nutrient availability.
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Affiliation(s)
- Kaiyi Wu
- Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB Wageningen, The Netherlands; Sub-department of Environmental Technology, Wageningen University, PO box 8129, 6700 EV Wageningen, the Netherlands
| | - Merve Atasoy
- Sub-department of Environmental Technology, Wageningen University, PO box 8129, 6700 EV Wageningen, the Netherlands; UNLOCK, Wageningen University & Research, 6708 PB Wageningen, the Netherlands
| | - Hans Zweers
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB Wageningen, The Netherlands
| | - Huub Rijnaarts
- Sub-department of Environmental Technology, Wageningen University, PO box 8129, 6700 EV Wageningen, the Netherlands
| | - Alette Langenhoff
- Sub-department of Environmental Technology, Wageningen University, PO box 8129, 6700 EV Wageningen, the Netherlands
| | - Tânia V Fernandes
- Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB Wageningen, The Netherlands.
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22
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Ugya AY, Chen H, Wang Q. Microalgae biofilm system as an efficient tool for wastewater remediation and potential bioresources for pharmaceutical product production: an overview. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2023; 26:131-142. [PMID: 37382505 DOI: 10.1080/15226514.2023.2229920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
The role of microalgae in wastewater remediation and metabolite production has been well documented, but the limitations of microalgae harvesting and low biomass production call for a more sustainable method of microalgae utilization. The current review gives an insight on how microalgae biofilms can be utilized as a more efficient system for wastewater remediation and as potential source of metabolite for pharmaceutical product production. The review affirms that the extracellular polymeric substance (EPS) is the vital component of the microalgae biofilm because it influences the spatial organization of the organisms forming microalgae biofilm. The EPS is also responsible for the ease interaction between organisms forming microalgae biofilm. This review restate the crucial role play by EPS in the removal of heavy metals from water to be due to the presence of binding sites on its surface. This review also attribute the ability of microalgae biofilm to bio-transform organic pollutant to be dependent on enzymatic activities and the production of reactive oxygen species (ROS). The review assert that during the treatment of wastewater, the wastewater pollutants induce oxidative stress on microalgae biofilms. The response of the microalgae biofilm toward counteracting the stress induced by ROS leads to production of metabolites. These metabolites are important tools that can be harness for the production of pharmaceutical products.
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Affiliation(s)
- Adamu Yunusa Ugya
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
- Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
- Department of Environmental Management, Kaduna State University, Kaduna State, Nigeria
| | - Hui Chen
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
- Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
| | - Qiang Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
- Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
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23
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Nezafatian E, Farhadian O, Yegdaneh A, Safavi M, Daneshvar E, Bhatnagar A. Enhanced production of bioactive compounds from marine microalgae Tetraselmis tetrathele under salinity and light stresses: A two-stage cultivation strategy. BIORESOURCE TECHNOLOGY 2023; 376:128899. [PMID: 36933578 DOI: 10.1016/j.biortech.2023.128899] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/09/2023] [Accepted: 03/11/2023] [Indexed: 06/18/2023]
Abstract
This study leveraged the salinity and light intensity stresses during the stationary phase for enhancing the pigment contents and antioxidant capacity of Tetraselmis tetrathele. The highest pigments content was obtained in cultures under salinity stress (40 g L-1) illuminated using fluorescent light. Furthermore, the best inhibitory concentration (IC50) for scavenging the 2, 2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radicals was found as 79.53 µg mL-1 in ethanol extract and cultures under red LED light stress (300 µmol m-2 s-1). The highest antioxidant capacity in a ferric-reducing antioxidant power (FRAP) assay (1,778.6 µM Fe+2) was found in ethanol extract and cultures under salinity stress illuminated using fluorescent light. Maximum scavenging of the 2.2-diphenyl-1-picrylhydrazyl (DPPH) radical was found in ethyl acetate extracts under light and salinity stresses. These results indicated that abiotic stresses could enhance the pigment and antioxidant components of T. tetrathele, which are value-added compounds in the pharmaceutical, cosmetic, and food industries.
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Affiliation(s)
- Elham Nezafatian
- Department of Natural Resources, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Omidvar Farhadian
- Department of Natural Resources, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Afsaneh Yegdaneh
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences and Isfahan Pharmaceutical Sciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Maliheh Safavi
- Department of Biotechnology, Iranian Research Organization for Science and Technology (IROST), 3353-5111 Tehran, Iran
| | - Ehsan Daneshvar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130 Mikkeli, Finland
| | - Amit Bhatnagar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130 Mikkeli, Finland
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24
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Chen D, Wang G, Chen C, Feng Z, Jiang Y, Yu H, Li M, Chao Y, Tang Y, Wang S, Qiu R. The interplay between microalgae and toxic metal(loid)s: mechanisms and implications in AMD phycoremediation coupled with Fe/Mn mineralization. JOURNAL OF HAZARDOUS MATERIALS 2023; 454:131498. [PMID: 37146335 DOI: 10.1016/j.jhazmat.2023.131498] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 04/10/2023] [Accepted: 04/24/2023] [Indexed: 05/07/2023]
Abstract
Acid mine drainage (AMD) is low-pH with high concentration of sulfates and toxic metal(loid)s (e.g. As, Cd, Pb, Cu, Zn), thereby posing a global environmental problem. For decades, microalgae have been used to remediate metal(loid)s in AMD, as they have various adaptive mechanisms for tolerating extreme environmental stress. Their main phycoremediation mechanisms are biosorption, bioaccumulation, coupling with sulfate-reducing bacteria, alkalization, biotransformation, and Fe/Mn mineral formation. This review summarizes how microalgae cope with metal(loid) stress and their specific mechanisms of phycoremediation in AMD. Based on the universal physiological characteristics of microalgae and the properties of their secretions, several Fe/Mn mineralization mechanisms induced by photosynthesis, free radicals, microalgal-bacterial reciprocity, and algal organic matter are proposed. Notably, microalgae can also reduce Fe(III) and inhibit mineralization, which is environmentally unfavorable. Therefore, the comprehensive environmental effects of microalgal co-occurring and cyclical opposing processes must be carefully considered. Using chemical and biological perspectives, this review innovatively proposes several specific processes and mechanisms of Fe/Mn mineralization that are mediated by microalgae, providing a theoretical basis for the geochemistry of metal(loid)s and natural attenuation of pollutants in AMD.
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Affiliation(s)
- Daijie Chen
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Guobao Wang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory for Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510006, China
| | - Chiyu Chen
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Zekai Feng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Yuanyuan Jiang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Hang Yu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Mengyao Li
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Yuanqing Chao
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory for Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510006, China
| | - Yetao Tang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory for Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510006, China
| | - Shizhong Wang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory for Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510006, China.
| | - Rongliang Qiu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
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25
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Pencik O, Molnarova K, Durdakova M, Kolackova M, Klofac D, Kucsera A, Capal P, Svec P, Bytesnikova Z, Richtera L, Brtnický M, Adam V, Huska D. Not so dangerous? PET microplastics toxicity on freshwater microalgae and cyanobacteria. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 329:121628. [PMID: 37059171 DOI: 10.1016/j.envpol.2023.121628] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/26/2023] [Accepted: 04/11/2023] [Indexed: 05/06/2023]
Abstract
Microalgae and cyanobacteria are among the most important primary producers and are responsible for the production of 50-80% of the oxygen on Earth. They can be significantly affected by plastic pollution, as the vast majority of plastic waste ends up in rivers and then the oceans. This research focuses on green microalgae Chlorella vulgaris (C. vulgaris), Chlamydomonas reinhardtii (C. reinhardtii), filamentous cyanobacterium Limnospira (Arthrospira) maxima (L.(A.) maxima) and how they are affected by environmentally relevant PET-MPs (polyethylene-terephtalate microplastics). Manufactured PET-MPs have asymmetric shape, size between 3 and 7 μm and were used in concentrations ranging from 5 mg/L to 80 mg/L. The highest inhibitory rate of growth was found in C. reinhardtii (-24%). Concentration-dependent changes in chlorophyll a composition were found in C. vulgaris and C. reinhardtii, not in L. (A.) maxima. Furthermore, cell damage was detected in all three organisms by CRYO-SEM (shriveling, cell wall disruption), but the cyanobacterium was the least damaged. A PET-fingerprint was detected on the surface of all tested organisms using FTIR, indicating the adherence of PET-MPs. The highest rate of PET-MPs adsorption was detected in L. (A.) maxima. Specifically, characteristic spectra were observed at ∼721, 850, 1100, 1275, 1342, and 1715 cm-1 which are specific for functional groups of PET-MPs. Nitrogen and carbon content significantly increased in L. (A.) maxima under exposure to 80 mg/L due to the PET-MPs adherence and mechanical stress. In all three tested organisms, weak exposure-related ROS generation was detected. In general, cyanobacteria seem to be more resistant to the effects of MPs. However, organisms in the aquatic environment are exposed to MPs over a longer time scale, so it is important to use the present findings for further longer-term experiments on environmentally relevant organisms.
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Affiliation(s)
- Ondrej Pencik
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic
| | - Katarina Molnarova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic
| | - Michaela Durdakova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic
| | - Martina Kolackova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic
| | - Daniel Klofac
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic
| | - Attilla Kucsera
- Department of Molecular Biology and Radiobiology, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic
| | - Petr Capal
- Institute of Experimental Botany, Centre of the Region Hana for Biotechnological and Agricultural Research, Slechtitelu 241/27, 783 71, Olomouc, Czech Republic
| | - Pavel Svec
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic
| | - Zuzana Bytesnikova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic
| | - Lukas Richtera
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic
| | - Martin Brtnický
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic
| | - Dalibor Huska
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic.
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26
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Yang N, Zhang Q, Chen J, Wu S, Chen R, Yao L, Li B, Liu X, Zhang R, Zhang Z. Study on bioactive compounds of microalgae as antioxidants in a bibliometric analysis and visualization perspective. FRONTIERS IN PLANT SCIENCE 2023; 14:1144326. [PMID: 37056511 PMCID: PMC10089266 DOI: 10.3389/fpls.2023.1144326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 03/09/2023] [Indexed: 06/19/2023]
Abstract
Natural antioxidants are more attractive than synthetic chemical oxidants because of their non-toxic and non-harmful properties. Microalgal bioactive components such as carotenoids, polysaccharides, and phenolic compounds are gaining popularity as very effective and long-lasting natural antioxidants. Few articles currently exist that analyze microalgae from a bibliometric and visualization point of view. This study used a bibliometric method based on the Web of Science Core Collection database to analyze antioxidant research on bioactive compounds in microalgae from 1996 to 2022. According to cluster analysis, the most studied areas are the effectiveness, the antioxidant mechanism, and use of bioactive substances in microalgae, such as carotene, astaxanthin, and tocopherols, in the fields of food, cosmetics, and medicine. Using keyword co-occurrence and keyword mutation analysis, future trends are predicted to improve extraction rates and stability by altering the environment of microalgae cultures or mixing extracts with chemicals such as nanoparticles for commercial and industrial applications. These findings can help researchers identify trends and resources to build impactful investigations and expand scientific frontiers.
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Affiliation(s)
- Ning Yang
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Qingyang Zhang
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, China
- Qingyuan County Edible Fungus Industry Center, Lishui, China
| | - Jingyun Chen
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Shilin Wu
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Ran Chen
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Liping Yao
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, China
| | - Bailei Li
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, China
| | - Xiaojun Liu
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Rongqing Zhang
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, China
| | - Zhen Zhang
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
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27
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Sharma J, Mariam I, Suresh Kareya M, Pavan Jutur P, Joshi M, Bhatnagar A, Chaurasia AK, Nigam S. Metabolomic response of microalgae towards diclofenac sodium during its removal from water and concomitant recovery of pigments and lipids. BIORESOURCE TECHNOLOGY 2023; 371:128617. [PMID: 36640815 DOI: 10.1016/j.biortech.2023.128617] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/08/2023] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
The aim of this work was to assess the efficiency of freshwater green microalga, Chlorella sorokiniana for diclofenac sodium (DFS) removal, and metabolic response of alga to comprehend the metabolic pathways involved/affected during DFS decontamination. Results showed 91.51 % removal of DFS could be achieved within 9 days of algal treatment along with recovery of enhanced value-added bioresources i.e. chlorophyll, carotenoids, and lipids from the spent biomass. DFS also had an effect on enzyme activity including superoxide dismutase (SOD), catalase (CAT), and lipid peroxidation (MDA). Furthermore, metabolomics profiling provided an in-depth insight into changes in the metabolic response of C. sorokiniana wherein DFS induced 32 metabolites in microalgae compared to unexposed-control. This study offers microalgae as a green option for DFS removal, and the metabolomics study complemented with DFS could be an approach to understand the stress-induced strategies of C. sorokiniana for concomitant value-added products recovery in presence of DFS.
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Affiliation(s)
- Jyoti Sharma
- Amity Institute of Biotechnology, Amity University, Noida 201313, Uttar Pradesh, India
| | - Iqra Mariam
- Omics of Algae Group, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067 India; Department of Biological Sciences, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400 005, India
| | - Mukul Suresh Kareya
- Omics of Algae Group, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067 India; Laboratoire de Biologie Physico-Chimique des Protéines Membranaires, UMR 7099, CNRS, Université Paris Diderot, Institut de Biologie Physico-Chimique, 13 rue Pierre et Marie Curie, 75005 Paris, France
| | - Pannaga Pavan Jutur
- Omics of Algae Group, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067 India
| | - Monika Joshi
- Amity Institute of Nanotechnology, Amity University, Noida, 201313, Uttar Pradesh, India
| | - Amit Bhatnagar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130 Mikkeli, Finland
| | - Akhilesh K Chaurasia
- Department of Precision Medicine, School of Medicine, Sungkyunkwan University (SKKU), Suwon 16419, Korea
| | - Subhasha Nigam
- Amity Institute of Biotechnology, Amity University, Noida 201313, Uttar Pradesh, India.
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Singh A, Čížková M, Náhlík V, Mezricky D, Schild D, Rucki M, Vítová M. Bio-removal of rare earth elements from hazardous industrial waste of CFL bulbs by the extremophile red alga Galdieria sulphuraria. Front Microbiol 2023; 14:1130848. [PMID: 36860487 PMCID: PMC9969134 DOI: 10.3389/fmicb.2023.1130848] [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: 12/23/2022] [Accepted: 01/24/2023] [Indexed: 02/17/2023] Open
Abstract
In recent decades, a shift has been seen in the use of light-emitting diodes over incandescent lights and compact fluorescent lamps (CFL), which eventually led to an increase in wastes of electrical equipment (WEE), especially fluorescent lamps (FLs) and CFL light bulbs. These widely used CFL lights, and their wastes are good sources of rare earth elements (REEs), which are desirable in almost every modern technology. Increased demand for REEs and their irregular supply have exerted pressure on us to seek alternative sources that may fulfill this demand in an eco-friendly manner. Bio-removal of wastes containing REEs, and their recycling may be a solution to this problem and could balance environmental and economic benefits. To address this problem, the current study focuses on the use of the extremophilic red alga, Galdieria sulphuraria, for bioaccumulation/removal of REEs from hazardous industrial wastes of CFL bulbs and the physiological response of a synchronized culture of G. sulphuraria. A CFL acid extract significantly affected growth, photosynthetic pigments, quantum yield, and cell cycle progression of this alga. A synchronous culture was able to efficiently accumulate REEs from a CFL acid extract and efficiency was increased by including two phytohormones, i.e., 6-Benzylaminopurine (BAP - Cytokinin family) and 1-Naphthaleneacetic acid (NAA - Auxin family).
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Affiliation(s)
- Anjali Singh
- Laboratory of Cell Cycles of Algae, Centre Algatech, Institute of Microbiology, Czech Academy of Sciences, Třeboň, Czechia
| | - Mária Čížková
- Laboratory of Cell Cycles of Algae, Centre Algatech, Institute of Microbiology, Czech Academy of Sciences, Třeboň, Czechia
| | - Vít Náhlík
- Laboratory of Cell Cycles of Algae, Centre Algatech, Institute of Microbiology, Czech Academy of Sciences, Třeboň, Czechia,Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Institute of Aquaculture and Protection of Waters, University of South Bohemia, České Budějovice, Czechia
| | - Dana Mezricky
- Institute of Medical and Pharmaceutical Biotechnology, IMC FH Krems, Krems, Austria
| | - Dominik Schild
- Institute of Medical and Pharmaceutical Biotechnology, IMC FH Krems, Krems, Austria
| | - Marian Rucki
- Laboratory of Predictive Toxicology, National Institute of Public Health, Prague, Czechia
| | - Milada Vítová
- Laboratory of Cell Cycles of Algae, Centre Algatech, Institute of Microbiology, Czech Academy of Sciences, Třeboň, Czechia,Centre for Phycology, Institute of Botany, Czech Academy of Sciences, Třeboň, Czechia,*Correspondence: Milada Vítová,
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Kougia E, Ioannou E, Roussis V, Tzovenis I, Chentir I, Markou G. Iron (Fe) biofortification of Arthrospira platensis: Effects on growth, biochemical composition and in vitro iron bioaccessibility. ALGAL RES 2023. [DOI: 10.1016/j.algal.2023.103016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Samadhiya K, Ghosh A, Bhatnagar A, Bala K. Effect of acute vs chronic stress on Polyhydroxybutyrate production by indigenous cyanobacterium. Int J Biol Macromol 2023; 227:416-423. [PMID: 36563801 DOI: 10.1016/j.ijbiomac.2022.12.177] [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: 08/27/2022] [Revised: 12/01/2022] [Accepted: 12/07/2022] [Indexed: 12/24/2022]
Abstract
Fossil-based plastic has become a global-threat due to its high stability and transformation into more lethal forms such as micro plastics with time. An alternative should be found to combat this global enemy. Polyhydroxybutyrate or PHB can be such an alternative to plastic. Present study explores the synthesis of PHB in Neowollea manoromense, using two different cultivation-approaches: acute and chronic stress. This study has used 6 carbon sources and 3 different level of phosphate to study the accumulation of PHB along with lipid, carbohydrate, and proteins. Highest PHB in chronic-stress was achieved under glucose supplementation without phosphate at 21st day (156.5 ± 22.5 μg/mg), whereas in acute-stress, it was achieved under acetate without phosphate (91.0 ± 2.7 μg/mg). Despite higher accumulation in chronic-stress, high PHB productivity was achieved in acute-stress. Principal Component Analysis suggests that all the variables were positively correlated with each other. Here we first report PHB accumulation in Neowollea manoromense. This study highlights that acute-stress can be a powerful tool in establishment of a sustainable cyanobacteria based bio refinery for PHB production.
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Affiliation(s)
- Kanchan Samadhiya
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, 453552, India
| | - Atreyee Ghosh
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, 453552, India
| | - Amit Bhatnagar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Finland
| | - Kiran Bala
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, 453552, India.
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Polyethylenimine linked with chitosan improves astaxanthin production in Haematococcus pluvialis. Appl Microbiol Biotechnol 2023; 107:569-580. [PMID: 36517544 DOI: 10.1007/s00253-022-12275-5] [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: 05/27/2022] [Revised: 10/26/2022] [Accepted: 11/02/2022] [Indexed: 12/23/2022]
Abstract
Astaxanthin is receiving increasing interest as an antioxidant and high value-added secondary metabolite. Haematococcus pluvialis is the main source for astaxanthin production, and many studies are being conducted to increase the production of astaxanthin. In this study, we linked polyethylenimine (PEI) with chitosan to maintain astaxanthin-inducing ability while securing the recyclability of the inducer. Astaxanthin accumulation in H. pluvialis was induced to 86.4 pg cell-1 with the PEI-chitosan fiber (PCF) treatment prepared by cross-linking of 10 μM PEI and low molecular weight (MW) chitosan via epichlorohydrin. PEI concentration affected the astaxanthin accumulation, whereas the MW of chitosan did not. In addition, the PCF treatment in H. pluvialis increased the reactive oxygen species (ROS) content in cells, thereby upregulating the transcription of enzymes involved in astaxanthin biosynthesis. PCF can be reused multiple times with the maintenance of over 90% of the astaxanthin production efficiency. This study offers a reusable PCF stimulation strategy for enhancing natural astaxanthin content, and PCF treatment will easily increase the production scale or reduce production costs by using recyclability that is not available in current methods. KEY POINTS: • Polyethylenimine-chitosan fiber (PCF) was applied to Haematococcus pluvialis • PCF promotes astaxanthin accumulation by enhancing oxidative stress in H. pluvialis • PCF can be reused multiple times with maintaining over 90% production efficiency.
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Microalgal Carotenoids: Therapeutic Application and Latest Approaches to Enhance the Production. Curr Issues Mol Biol 2022; 44:6257-6279. [PMID: 36547088 PMCID: PMC9777246 DOI: 10.3390/cimb44120427] [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: 11/19/2022] [Revised: 12/06/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022] Open
Abstract
Microalgae are microscopic photosynthetic organisms frequently found in fresh and marine water ecosystems. Various microalgal species have been considered a reservoir of diverse health-value products, including vitamins, proteins, lipids, and polysaccharides, and are broadly utilized as food and for the treatment of human ailments such as cancer, cardiovascular diseases, allergies, and immunodeficiency. Microalgae-derived carotenoids are the type of accessory pigment that possess light-absorbing potential and play a significant role in metabolic functions. To date, nearly a thousand carotenoids have been reported, but a very less number of microalgae have been used for the commercial production of carotenoids. This review article briefly discussed the carotenoids of microalgal origin and their therapeutic application. In addition, we have briefly compiled the optimization of culture parameters used to enhance microalgal carotenoid production. In addition, the latest biotechnological approaches used to improve the yields of carotenoid has also been discussed.
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Huang B, Qu G, He Y, Zhang J, Fan J, Tang T. Study on high-CO 2 tolerant Dunaliella salina and its mechanism via transcriptomic analysis. Front Bioeng Biotechnol 2022; 10:1086357. [PMID: 36532596 PMCID: PMC9751823 DOI: 10.3389/fbioe.2022.1086357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 11/16/2022] [Indexed: 11/29/2023] Open
Abstract
Microalgae has been regarded as a promising method for reducing CO2 emission. High CO2 concentration generally inhibits algal growth, and previous studies have mostly focused on breeding freshwater algae with high CO2 tolerance. In this study, one marine algal strain Dunaliella salina (D. salina) was grown under 0.03%-30 % CO2 and 3% NaCl conditions, and was evaluated to determine its potential for CO2 assimilation. The results showed that D. salina could tolerate 30% CO2 , and its maximum biomass concentration could reach 1.13 g·L-1 after 8 days incubation, which was 1.85 times higher than that of incubation in air (0.03%). The phenomenon of high-CO2 tolerance in D. salina culture was discussed basing on transcriptome analysis. The results showed that D. salina was subjected to oxidative stress under 30% CO2 conditions, and the majority genes involving in antioxidant system, such as SOD, CAT, and APX genes were up-regulated to scavenge ROS. In addition, most of the key enzyme genes related to photosynthesis, carbon fixation and metabolism were up-regulated, which are consistent with the higher physiological and biochemical values for D. salina incubation under 30% CO2 .
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Affiliation(s)
- Bo Huang
- CAS Key Lab of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
| | - Gaopin Qu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Yulong He
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Jinli Zhang
- CAS Key Lab of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
| | - Jianhua Fan
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Tao Tang
- CAS Key Lab of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
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Investigation on Some Algal Extracts as Appropriate Stabilizers for Radiation-Processed Polymers. Polymers (Basel) 2022; 14:polym14224971. [PMID: 36433098 PMCID: PMC9693130 DOI: 10.3390/polym14224971] [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: 10/17/2022] [Revised: 11/07/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022] Open
Abstract
This study presents the appropriate solution, algal extracts, for the improvement of polymer durability when the material is subjected to acute oxidation damage. The investigated support, styrene-isoprene-styrene (SIS), is modified by three algal extracts: Chlorella vulgaris, Spirulina platensis, and Ascophyllum nodosum (Kelp) with a low concentration (1 wt%). The presence of polyhedral oligomeric silsesquioxane (POSS) ensures the growth of stability with respect to the pristine polymer. The thermal performances of the host polymer, indicated by chemiluminescence, reveal the essential contribution of an additive to the improvement in oxidation strength. The stability of the polymer adjusted by algal extracts is proved by the activation energy values, which increase from 49 kJ mol-1 to 89 kJ mol-1 for the same polymer modified with Ascophyllum nodosum. This main important characteristic is the consequence of the highly efficient activity of the polyphenol components of algal extracts and the effect of the three natural additives on the favorably changed kinetic parameters (oxidation induction time and onset oxidation temperature). The exposure of the polymer matrix to the damaging action of γ-rays does not affect the proper contributions to the fast delay in material ageing. The irradiation of 100 kGy, a usual technological dose, may be successfully applied in the radiation processing of a polymer stabilized with algal extracts due to the efficient protection of the additive as the chain-breaking agents.
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Corrêa PS, de M. Júnior WG, Caetano NS. Antioxidant potential of extracts of Chromochloris zofingiensis cultivated in pilot-scale outdoor tubular photobioreactors under nitrogen limitation. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zhou T, Li X, Zhang Q, Dong S, Liu H, Liu Y, Chaves AV, Ralph PJ, Ruan R, Wang Q. Ecotoxicological response of Spirulina platensis to coexisted copper and zinc in anaerobic digestion effluent. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 837:155874. [PMID: 35568173 DOI: 10.1016/j.scitotenv.2022.155874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/06/2022] [Accepted: 05/08/2022] [Indexed: 06/15/2023]
Abstract
Copper ion (Cu2+) and zinc ion (Zn2+) are widely co-existent in anaerobic digestion effluent as typical contaminants. This work aims to explore how Cu2+-Zn2+ association affects physiological properties of S. platensis using Schlösser medium (SM) and sterilized anaerobic digestion effluent (SADE). Microalgae cells viability, biochemical properties, uptake of Cu2+ and Zn2+, and risk assessment associated with the biomass reuse as additives to pigs were comprehensively assessed. Biomass production ranged from 0.03 to 0.28 g/L in SM and 0.63 to 0.79 g/L in SADE due to the presence of Cu2+ and Zn2+. Peak value of chlorophyll-a and carotenoid content during the experiment decreased by 70-100% and 40-100% in SM, and by 70-77% and 30-55% in SADE. Crude protein level reduced by 4-41% in SM and by 65-75% in SADE. The reduction ratio of these compounds was positively related to the Cu2+ and Zn2+ concentrations. Maximum value of saturated and unsaturated fatty acids was both obtained at 0.3 Cu + 2.0 Zn (50.8% and 22.8%, respectively) and 25% SADE reactors (33.8% and 27.7%, respectively). Uptake of Cu in biomass was facilitated by Zn2+ concentration (> 4.0 mg/L). Risk of S. platensis biomass associated with Cu2+ was higher than Zn2+. S. platensis from SM (Cu2+ ≤ 0.3 mg/L and Zn2+ ≤ 4.0 mg/L) and diluted SADE (25% and 50% SADE) reactors could be used as feed additives without any risk (hazard index <1), which provides sufficient protein and fatty acids for pig consumption. These results revealed the promising application of using S. platensis for bioremediation of Cu2+ and Zn2+ in anaerobic digestion effluent and harvesting biomass for animal feed additives.
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Affiliation(s)
- Ting Zhou
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia; State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China
| | - Xuan Li
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Qi Zhang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China
| | - Shiman Dong
- College of Tropical Crops, Hainan University, Haikou, Hainan 570228, China
| | - Huan Liu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China.
| | - Alex V Chaves
- School of Life and Environmental Sciences, University of Sydney, Camperdown, NSW 2006, Australia
| | - Peter J Ralph
- Climate Change Cluster (C3), University of Technology Sydney, NSW 2007, Australia
| | - Roger Ruan
- Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA
| | - Qilin Wang
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia.
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Wei Q, Yao J, Chen R, Yang S, Tang Y, Ma X. Low-frequency ultrasound and nitrogen limitation induced enhancement in biomass production and lipid accumulation of Tetradesmus obliquus FACHB-12. BIORESOURCE TECHNOLOGY 2022; 358:127387. [PMID: 35636673 DOI: 10.1016/j.biortech.2022.127387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
The two-stage cultivation strategy was optimized in this study to simultaneously promote the growth and lipid accumulation of Tetradesmus obliquus. Results showed that the optimal dual-stress conditions were nitrogen concentration at 25 mg N·L-1 and low-frequency ultrasound at 200 Watt, 1 min, and 8 h interval. The biomass and lipid content of Tetradesmus obliquus were increased by 32.1% and 44.5%, respectively, comparing to the control, and the lipid productivity reached 86.97 mg-1·L-1·d-1 at the end of the cultivation period. The protein and photosynthetic pigment contents of microalgae decreased by 22.4% and 14.0% under dual stress comparing to the control environment. In addition, dual stress cultivation of microalgae presented higher level of antioxidant capacity to balance to oxidation level in microalgal cells. This study provides a new insight for microalgae growth and lipid accumulation with dual stress stimulation.
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Affiliation(s)
- Qun Wei
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Jinjie Yao
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Ruge Chen
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Shangru Yang
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Yonghe Tang
- Guangxi Key Laboratory of Electrochemical Energy Materials, Institute of Optical Materials and Chemical Biology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, PR China; MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, PR China
| | - Xiangmeng Ma
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, PR China; Guangxi Key Laboratory of Electrochemical Energy Materials, Institute of Optical Materials and Chemical Biology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, PR China.
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Du S, Meng F, Duan W, Liu Q, Li H, Peng X. Oxidative stress responses in two marine diatoms during acute n-butyl acrylate exposure and the toxicological evaluation with the IBR v2 index. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 240:113686. [PMID: 35636239 DOI: 10.1016/j.ecoenv.2022.113686] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 05/10/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
n-Butyl acrylate (nBA), a typical hazardous and noxious substance (HNS), is the largest-volume acrylate ester used to produce various types of polymers. With the increasing volume of nBA subject to maritime transportation, its accidental leakage poses a great risk to the marine organisms. Therefore, it is necessary to evaluate the ecological risk of nBA in marine environments. In this study, two species of marine microalgae, Skeletonema costatum and Phaeodactylum tricornutum, were used to explore the toxic effects of nBA based on their growth, pigment content, and oxidative stress. The growth of each species was significantly inhibited by nBA, showing a 96 h-EC50 value of 2.23 mg/L for P. tricornutum and 8.19 mg/L for S. costatum, respectively. Although chlorophylls a and c exerted a hormesis effect in P. tricornutum, contents of pigments generally decreased at high concentrations. In P. tricornutum, all detected antioxidants (reduced glutathione, GSH; superoxide dismutase, SOD; catalase, CAT; and glutathione peroxidase, GPx) were stimulated at concentrations ranging from 1.50 to 3.82 mg/L. However, these elevations were not enough to reduce the oxidative damage caused by nBA, because the content of malondialdehyde (MDA) increased continuously during 96-h exposure. For S. costatum, the activities of only two antioxidants (GSH and CAT) were enhanced, which is enough to prevent the MDA content from rising, even at higher concentrations of nBA (5-10 mg/L). The Integrated Biomarker Response Version 2 (IBRv2) index that combines responses of the above five oxidative stress biomarkers, was not only correlated positively with nBA concentration but could also indicate the occurrence of oxidative stress caused by acute concentration of nBA. These findings showed that P. tricornutum was sensitive to nBA compared to S. costatum, and the IBRv2 index was an effective tool for evaluating ecotoxicological effects on marine microalgae due to nBA spills.
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Affiliation(s)
- Shuhao Du
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province, PR China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, Shandong Province, PR China
| | - Fanping Meng
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province, PR China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, Shandong Province, PR China.
| | - Weiyan Duan
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province, PR China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, Shandong Province, PR China
| | - Qunqun Liu
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province, PR China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, Shandong Province, PR China
| | - Hao Li
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province, PR China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, Shandong Province, PR China
| | - Xiaoling Peng
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province, PR China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, Shandong Province, PR China
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Ruiz-Medina MA, Sansón M, González-Rodríguez ÁM. Changes in antioxidant activity of fresh marine macroalgae from the Canary Islands during air-drying process. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102798] [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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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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Ben Hamouda M, Kacem A, Achour L, Krichen Y, Legrand J, Grizeau D, Dupre C. Comparative study on photosynthetic and antioxidant activities of Haematococcus pluvialis vegetative and resting cells; UVA light-induced stimulation. J Appl Microbiol 2022; 132:4338-4348. [PMID: 35332635 DOI: 10.1111/jam.15540] [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: 12/28/2021] [Revised: 03/17/2022] [Accepted: 03/21/2022] [Indexed: 11/27/2022]
Abstract
AIM This study aims to determine how photosynthetic and antioxidant activities vary in vegetative and dormant cells of Haematococcus pluvialis subjected to stresses in conditions representative of industrial productions of microalgae under solar light. METHODS AND RESULTS The effects of short-term oxidative treatments were examined on photosynthetic and antioxidant activities of Haematococcus pluvialis vegetative and resting cells. The vegetative cells have 1.6 times higher levels of phenolic compounds, but 1.7 times less catalase, ascorbate peroxidase, and superoxide dismutase activities than the astaxanthin-enriched resting cells. Mainly, a UVA dose of 4 J cm-2 induced increases in photosystem II electron transport rates (ETRmax) (+15%), phenolic compounds (+15%), astaxanthin (+ 48%), catalase (+45%), and superoxide dismutase (+30%) activities in vegetative cells. CONCLUSION The UVA-dose strongly stimulates the photosynthetic and antioxidant activities of vegetative cells, but only the accumulation of astaxanthin in resting cells. SIGNIFICANCE AND IMPACT OF THE STUDY These preliminary results show that oxidative stresses at sub-lethal levels can stimulate the activities of microalgae. Further investigations are needed to estimate the real influence on metabolite productivities in industrial production conditions.
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Affiliation(s)
- Meriem Ben Hamouda
- Nantes University, Oniris, CNRS, GEPEA, UMR 6144, Saint-Nazaire, France.,Research Laboratory LR14ES06: Integrative Biology and Bioresources Valorization BIOLIVAL, Higher Institute of Biotechnology of Monastir, University of Monastir, Monastir, Tunisia.,BioAlguesTunisie, El Alia, Ksour Essef, Mahdia, Tunisia
| | - Adnane Kacem
- Research Laboratory LR14ES06: Integrative Biology and Bioresources Valorization BIOLIVAL, Higher Institute of Biotechnology of Monastir, University of Monastir, Monastir, Tunisia
| | - Lotfi Achour
- Research Laboratory LR14ES06: Integrative Biology and Bioresources Valorization BIOLIVAL, Higher Institute of Biotechnology of Monastir, University of Monastir, Monastir, Tunisia
| | | | - Jack Legrand
- Nantes University, Oniris, CNRS, GEPEA, UMR 6144, Saint-Nazaire, France
| | - Dominique Grizeau
- Nantes University, Oniris, CNRS, GEPEA, UMR 6144, Saint-Nazaire, France
| | - Catherine Dupre
- Nantes University, Oniris, CNRS, GEPEA, UMR 6144, Saint-Nazaire, France
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Hernández H, Nunes MC, Prista C, Raymundo A. Innovative and Healthier Dairy Products through the Addition of Microalgae: A Review. Foods 2022; 11:755. [PMID: 35267388 PMCID: PMC8909392 DOI: 10.3390/foods11050755] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/28/2022] [Accepted: 03/02/2022] [Indexed: 02/04/2023] Open
Abstract
In recent years, the development of healthier foods, richer in nutraceutical or functional compounds, has been in great demand. Microalgae are attracting increasing attention, as their incorporation in foods and beverages can be a promising strategy to develop sustainable foods with improved nutritional profiles and a strong positive impacts on health. Despite the increasing market demand in plant-based foods, the popularity of fermented dairy foods has increased in the recent years since they are a source of microorganisms with health-promoting effects. In this context, the incorporation of microalgae in cheeses, fermented milks and other dairy products represents an interesting approach towards the development of innovative and added-value hybrid products based on animal proteins and enriched with vegetable origin ingredients recognized as extremely valuable sources of bioactive compounds. The effect of the addition of microalgal biomass (Chlorella vulgaris, Arthrospira platensis, Pavlova lutheri, and Diacronema vlkianum, among others) and its derivates on the physicochemical composition, colorimetric and antioxidant properties, texture and rheology behavior, sensory profile, and viability of starter cultures and probiotics in yogurt, cheese and ice cream is discussed in the current work. This review of the literature on the incorporation of microalgae in dairy products aims to contribute to a better understanding of the potential use of these unique food ingredients in the development of new sustainable products and of their beneficial effects on health. Considering the importance of commercialization, regulatory issues about the use of microalgae in dairy products are also discussed.
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Affiliation(s)
| | - Maria Cristiana Nunes
- LEAF (Linking Landscape Environment Agriculture and Food), Research Unit Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal; (H.H.); (C.P.); (A.R.)
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Zhang Y, Wan J, Li Z, Wu Z, Dang C, Fu J. Enhanced removal efficiency of sulfamethoxazole by acclimated microalgae: Tolerant mechanism, and transformation products and pathways. BIORESOURCE TECHNOLOGY 2022; 347:126461. [PMID: 34863845 DOI: 10.1016/j.biortech.2021.126461] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/26/2021] [Accepted: 11/26/2021] [Indexed: 06/13/2023]
Abstract
This study utilized sulfamethoxazole (SMX) acclimatization to enhance the tolerance and biodegradation capacity of Chlorella vulgaris. Compared to wild C. vulgaris, the growth inhibition and oxidative damage induced by SMX evidently decreased in acclimated C. vulgaris, and meanwhile photosynthetic and antioxidant activities were significantly promoted. The physiological analyses with the aid of principal component analysis revealed the increase of catalase and glutathione reductase activities was the critical tolerant mechanism of acclimated C. vulgaris. As the consequence, the acclimated C. vulgaris exhibited enhanced efficiency and (pseudo-first-order) kinetic rate for removal of SMX. The distribution analysis of residual SMX demonstrated the biodegradation was the major removal mechanism of SMX by C. vulgaris, while bioadsorption and bioaccumulation made pimping contributions. During the degradation process of SMX, nine transformation products (TPs) were identified. Based on the identified TPs, a possible transformation pathway was proposed.
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Affiliation(s)
- Yibo Zhang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jing Wan
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhang Li
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhenbing Wu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Chenyuan Dang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jie Fu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
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Morillas-España A, Lafarga T, Sánchez-Zurano A, Acién-Fernández FG, González-López C. Microalgae based wastewater treatment coupled to the production of high value agricultural products: Current needs and challenges. CHEMOSPHERE 2022; 291:132968. [PMID: 34800510 DOI: 10.1016/j.chemosphere.2021.132968] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 11/12/2021] [Accepted: 11/16/2021] [Indexed: 06/13/2023]
Abstract
One of the main social and economic challenges of the 21st century will be to overcome the worlds' water deficit expected by the end of this decade. Microalgae based wastewater treatment has been suggested as a strategy to recover nutrients from wastewater while simultaneously producing clean water. Consortia of microalgae and bacteria are responsible for recovering nutrients from wastewater. A better understanding of how environmental and operational conditions affect the composition of the microalgae-bacteria consortia would allow to maximise nutrient recoveries and biomass productivities. Most of the studies reported to date showed promising results, although up-scaling of these processes to reactors larger than 100 m2 is needed to better predict their industrial relevance. The main advantage of microalgae based wastewater treatment is that valuable biomass with unlimited applications is produced as a co-product. The aim of the current paper was to review microalgae based wastewater treatment processes focusing on strategies that allow increasing both biomass productivities and nutrient recoveries. Moreover, the benefits of microalgae based agricultural products were also discussed.
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Affiliation(s)
- Ainoa Morillas-España
- Department of Chemical Engineering, University of Almeria, 04120, Almeria, Spain; CIESOL Solar Energy Research Centre, Joint Centre University of Almería-CIEMAT, 04120, Almería, Spain
| | - Tomas Lafarga
- Department of Chemical Engineering, University of Almeria, 04120, Almeria, Spain; CIESOL Solar Energy Research Centre, Joint Centre University of Almería-CIEMAT, 04120, Almería, Spain.
| | - Ana Sánchez-Zurano
- Department of Chemical Engineering, University of Almeria, 04120, Almeria, Spain; CIESOL Solar Energy Research Centre, Joint Centre University of Almería-CIEMAT, 04120, Almería, Spain
| | - Francisco Gabriel Acién-Fernández
- Department of Chemical Engineering, University of Almeria, 04120, Almeria, Spain; CIESOL Solar Energy Research Centre, Joint Centre University of Almería-CIEMAT, 04120, Almería, Spain
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Rathod JP, Vira C, Lali AM, Prakash G. Heterologous mannitol-1-phosphate dehydrogenase gene over-expression in Parachlorella kessleri for enhanced microalgal biomass productivity. J Genet Eng Biotechnol 2022; 20:38. [PMID: 35226194 PMCID: PMC8885943 DOI: 10.1186/s43141-022-00322-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 02/18/2022] [Indexed: 11/23/2022]
Abstract
Background Microalgae have tremendous potential in CO2 sequestration, bioenergy, biofuels, wastewater treatment, and high-value metabolites production. However, large-scale production of microalgae is hampered due to photo-inhibition in outdoor cultivation. Mannitol, as an osmolyte, is known to relieve the stress produced under different abiotic stress conditions during the growth of a photosynthetic organism. Results In the present study, Mannitol-1-phosphate 5-dehydrogenase (Mt1D) was over-expressed to study the effect of mannitol over-production in Parachlorella kessleri under high-light induced stress. Over-expression of Mt1D led to 65% increased mannitol content in the transformed P. kessleri compared to that of wild type. Mannitol transformant demonstrated > 20-fold reduction in reactive oxygen species generation and 15% higher biomass productivity when grown in outdoor cultivation with high-light irradiance of 1200 μmol photons m−2 s−1. Conclusions The current study establishes that a higher mannitol concentration provides stress shielding and leads to better acclimatization of transgenic microalgae against high-light generated stress. It also led to reduced ROS generation and improved growth of microalga under study. Thus, overexpression of the Mt1D gene in microalgae can be a suitable strategy to combat high-light stress.
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Affiliation(s)
- Jayant Pralhad Rathod
- DBT-ICT Centre for Energy Biosciences, Institute of Chemical Technology, Mumbai, India.,ADT's Shardabai Pawar Mahila Arts, Commerce & Science College, Baramati, Maharashtra, India
| | - Chaitali Vira
- DBT-ICT Centre for Energy Biosciences, Institute of Chemical Technology, Mumbai, India
| | - Arvind M Lali
- Department of Chemical Engineering, Institute of Chemical Technology, Mumbai, India
| | - Gunjan Prakash
- DBT-ICT Centre for Energy Biosciences, Institute of Chemical Technology, Mumbai, India.
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Curcuraci E, Manuguerra S, Messina CM, Arena R, Renda G, Ioannou T, Amato V, Hellio C, Barba FJ, Santulli A. Culture Conditions Affect Antioxidant Production, Metabolism and Related Biomarkers of the Microalgae Phaeodactylum tricornutum. Antioxidants (Basel) 2022; 11:antiox11020411. [PMID: 35204292 PMCID: PMC8869413 DOI: 10.3390/antiox11020411] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 02/10/2022] [Accepted: 02/11/2022] [Indexed: 12/10/2022] Open
Abstract
Phaeodactylum tricornutum (Bacillariophyta) is a worldwide-distributed diatom with the ability to adapt and survive in different environmental habitats and nutrient-limited conditions. In this research, we investigated the growth performance, the total lipids productivity, the major categories of fatty acids, and the antioxidant content in P. tricornutum subjected for 15 days to nitrogen deprivation (N-) compared to standard culture conditions (N+). Furthermore, genes and pathways related to lipid biosynthesis (i.e., glucose-6-phosphate dehydrogenase, acetyl-coenzyme A carboxylase, citrate synthase, and isocitrate dehydrogenase) and photosynthetic activity (i.e., ribulose-1,5-bisphospate carboxylase/oxygenase and fucoxanthin-chlorophyll a/c binding protein B) were investigated through molecular approaches. P. tricornutum grown under starvation condition (N-) increased lipids production (42.5 ± 0.19 g/100 g) and decreased secondary metabolites productivity (phenolic content: 3.071 ± 0.17 mg GAE g-1; carotenoids: 0.35 ± 0.01 mg g−1) when compared to standard culture conditions (N+). Moreover, N deprivation led to an increase in the expression of genes involved in fatty acid biosynthesis and a decrease in genes related to photosynthesis. These results could be used as indicators of nitrogen limitation for environmental or industrial monitoring of P. tricornutum.
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Affiliation(s)
- Eleonora Curcuraci
- Department of Earth and Marine Sciences DiSTeM, University of Palermo, Via Barlotta 4, 91100 Trapani, Italy; (E.C.); (S.M.); (R.A.); (G.R.); (A.S.)
| | - Simona Manuguerra
- Department of Earth and Marine Sciences DiSTeM, University of Palermo, Via Barlotta 4, 91100 Trapani, Italy; (E.C.); (S.M.); (R.A.); (G.R.); (A.S.)
| | - Concetta Maria Messina
- Department of Earth and Marine Sciences DiSTeM, University of Palermo, Via Barlotta 4, 91100 Trapani, Italy; (E.C.); (S.M.); (R.A.); (G.R.); (A.S.)
- Correspondence: (C.M.M.); (F.J.B.); Tel.: +39-923-560162 (C.M.M.); +34-963-544-972 (F.J.B.)
| | - Rosaria Arena
- Department of Earth and Marine Sciences DiSTeM, University of Palermo, Via Barlotta 4, 91100 Trapani, Italy; (E.C.); (S.M.); (R.A.); (G.R.); (A.S.)
| | - Giuseppe Renda
- Department of Earth and Marine Sciences DiSTeM, University of Palermo, Via Barlotta 4, 91100 Trapani, Italy; (E.C.); (S.M.); (R.A.); (G.R.); (A.S.)
| | - Theodora Ioannou
- Department of Chemistry, Faculty of Science, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece;
| | - Vito Amato
- L’Avannotteria Società Agricola a Responsabilità Limitata, Contrada Triglia Scaletta, 91020 Petrosino, Italy;
| | - Claire Hellio
- LEMAR, IRD, CNRS, Ifremer, Université de Brest, F-29280 Plouzane, France;
| | - Francisco J. Barba
- Nutrition and Food Science Area, Preventive Medicine and Public Health, Food Science, Toxicology and Forensic Medicine Department, Faculty of Pharmacy, Universitat de València, Av. Vicent Andrés Estellés, s/n, 46100 Burjassot, València, Spain
- Correspondence: (C.M.M.); (F.J.B.); Tel.: +39-923-560162 (C.M.M.); +34-963-544-972 (F.J.B.)
| | - Andrea Santulli
- Department of Earth and Marine Sciences DiSTeM, University of Palermo, Via Barlotta 4, 91100 Trapani, Italy; (E.C.); (S.M.); (R.A.); (G.R.); (A.S.)
- Istituto di Biologia Marina, Consorzio Universitario della Provincia di Trapani, Via G. Barlotta 4, 91100 Trapani, Italy
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Chu R, Hu D, Zhu L, Li S, Yin Z, Yu Y. Recycling spent water from microalgae harvesting by fungal pellets to re-cultivate Chlorella vulgaris under different nutrient loads for biodiesel production. BIORESOURCE TECHNOLOGY 2022; 344:126227. [PMID: 34743995 DOI: 10.1016/j.biortech.2021.126227] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 10/22/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
Fungal pellet is an emerging material to collect oleaginous microalgae, but rare studies have noticed that harvested water is available resource for the next round of cultivation. To systematically optimize regrowth performances of microalgae Chlorella vulgaris, separated water after harvesting by fungi Aspergillus oryzae was prepared under different N/P ratios. The results showed that chlorophylls and enzymes were significantly affected by the proportion of N and P. Although nutrient deficiency was functioned as a stress factor to restrict carbohydrate and protein synthesis, lipid content was obviously increased by 12.69%. The percentage of saturated fatty acids associated with oxidation stability increased, while this part in fresh wastewater accounted for only 36.96%. The favorable biomass concentration (1.37 g/L) with the highest lipid yield (0.42 g/L) appeared in N/P of 6:1. More strikingly, suitable conditions could save 52.4% of cultivation costs. These experiments confirmed that reusing bioflocculated water could be effectively utilized for biodiesel production.
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Affiliation(s)
- Ruoyu Chu
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, PR China
| | - Dan Hu
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, PR China
| | - Liandong Zhu
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, PR China.
| | - Shuangxi Li
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, PR China
| | - Zhihong Yin
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, PR China
| | - Yunjiang Yu
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, PR China
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Zhang L, Zhang L, Wu D, Wang L, Yang Z, Yan W, Jin Y, Chen F, Song Y, Cheng X. Biochemical wastewater from landfill leachate pretreated by microalgae achieving algae's self-reliant cultivation in full wastewater-recycling chain with desirable lipid productivity. BIORESOURCE TECHNOLOGY 2021; 340:125640. [PMID: 34325398 DOI: 10.1016/j.biortech.2021.125640] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/18/2021] [Accepted: 07/19/2021] [Indexed: 06/13/2023]
Abstract
Heightened awareness of additional pretreatment for wastewater, has driven studies towards building a full wastewater-recycling chain wherein the wastewater pretreatment is performed by microalgae themselves. We applied biochemical wastewater from landfill leachate with added K2HPO4 (BWLL + P) directly to microalgal cultivation. The results showed that the pretreatment provided by the 1st cultivation reduced suspended solids by nearly half, greatly boosting microalgal growth, which thus yielded 1.06 g/L of dry mass and 87.06 mg/L·d of biomass productivity. From the 2nd to the 4th cultivation, lipid accumulation in BWLL + P was 1.12-1.27 times and 1.95-2.36 times higher than in BG11 and BWLL, respectively, mainly attributed to the comfortable environment engendered by the microalgal pretreatment and the organic carbon in the wastewater. Strikingly, the biodiesel production fed with BWLL + P could save 99% of the cost compared with in BG11. In combination, our pioneering full wastewater-recycling chain achieved microalgae's self-reliant cultivation, with wastewater nourishment.
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Affiliation(s)
- Lijie Zhang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Libin Zhang
- School of Civil Engineering, Tianjin University, Tianjin 300072, China
| | - Daoji Wu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Lin Wang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Zhigang Yang
- Resources and Environment Innovation Institute, Shandong Jianzhu University, Jinan, 250101, China
| | - Wenbao Yan
- Environmental Monitoring Station of Lanshan Branch of Rizhao Ecological and Environment Bureau, 539 Jiaodingshan Road, Rizhao, 276800, China
| | - Yan Jin
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Feiyong Chen
- Resources and Environment Innovation Institute, Shandong Jianzhu University, Jinan, 250101, China
| | - Yang Song
- Resources and Environment Innovation Institute, Shandong Jianzhu University, Jinan, 250101, China
| | - Xiaoxiang Cheng
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China.
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Ren Y, Deng J, Huang J, Wu Z, Yi L, Bi Y, Chen F. Using green alga Haematococcus pluvialis for astaxanthin and lipid co-production: Advances and outlook. BIORESOURCE TECHNOLOGY 2021; 340:125736. [PMID: 34426245 DOI: 10.1016/j.biortech.2021.125736] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/04/2021] [Accepted: 08/05/2021] [Indexed: 05/25/2023]
Abstract
Astaxanthin is one of the secondary carotenoids involved in mediating abiotic stress of microalgae. As an important antioxidant and nutraceutical compound, astaxanthin is widely applied in dietary supplements and cosmetic ingredients. However, most astaxanthin in the market is chemically synthesized, which are structurally heterogeneous and inefficient for biological uptake. Astaxanthin refinery from Haematococcus pluvialis is now a growing industrial sector. H. pluvialis can accumulate astaxanthin to ∼5% of dry weight. As productivity is a key metric to evaluate the production feasibility, understanding the biological mechanisms of astaxanthin accumulation is beneficial for further production optimization. In this review, the biosynthesis mechanism of astaxanthin and production strategies are summarized. The current research on enhancing astaxanthin accumulation and the potential joint-production of astaxanthin with lipids was also discussed. It is conceivable that with further improvement on the productivity of astaxanthin and by-products, the algal-derived astaxanthin would be more accessible to low-profit applications.
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Affiliation(s)
- Yuanyuan Ren
- Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing 100871, China; Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China; Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China
| | - Jinquan Deng
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China; Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China
| | - Junchao Huang
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China; Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China
| | - Zhaoming Wu
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China; Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China
| | - Lanbo Yi
- Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing 100871, China; Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China; Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China
| | - Yuge Bi
- Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing 100871, China; Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China; Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China
| | - Feng Chen
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China; Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China.
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