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Guermazi W, Masmoudi S, Trabelsi NA, Gammoudi S, Ayadi H, Morant-Manceau A, Hotos GN. Physiological and Biochemical Responses in Microalgae Dunaliella salina, Cylindrotheca closterium and Phormidium versicolor NCC466 Exposed to High Salinity and Irradiation. Life (Basel) 2023; 13:life13020313. [PMID: 36836671 PMCID: PMC9961930 DOI: 10.3390/life13020313] [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: 12/16/2022] [Revised: 01/16/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
Dunaliella salina (Chlorophyceae), Phormidium versicolor (Cyanophyceae), and Cylindrotheca closterium (Bacillariophyceae) were isolated from three ponds in the solar saltern of Sfax (Tunisia). Growth, pigment contents, and photosynthetic and antioxidant enzyme activities were measured under controlled conditions of three light levels (300, 500, and 1000 µmol photons m-2 s-1) and three NaCl concentrations (40, 80, and 140 g L-1). The highest salinity reduced the growth of D. salina and P. versicolor NCC466 and strongly inhibited that of C. closterium. According to ΦPSII values, the photosynthetic apparatus of P. versicolor was stimulated by increasing salinity, whereas that of D. salina and C. closterium was decreased by irradiance rise. The production of carotenoids in D. salina and P. versicolor was stimulated when salinity and irradiance increased, whereas it decreased in the diatom. Catalase (CAT), Superoxide dismutase (SOD), and Ascorbate peroxidase (APX) activities were only detected when the three species were cultivated under E1000. The antioxidant activity of carotenoids could compensate for the low antioxidant enzyme activity measured in D. salina. Salinity and irradiation levels interact with the physiology of three species that have mechanisms of more or less effective stress resistance, hence different resistance to environmental stresses according to the species. Under these stress-controlled conditions, P. versicolor and C. closterium strains could provide promising sources of extremolyte for several purposes.
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Affiliation(s)
- Wassim Guermazi
- Laboratory of Marine Biodiversity and Environment (LR18ES/30), University of Sfax, Sfax CP 3000, Tunisia
| | - Salma Masmoudi
- Laboratory of Marine Biodiversity and Environment (LR18ES/30), University of Sfax, Sfax CP 3000, Tunisia
- LUNAM, Laboratoire Mer, Molécules, Santé (EA 2160), Université du Maine, Avenue Olivier Messiaen, CEDEX 9, 72085 Le Mans, France
| | - Neila Annabi Trabelsi
- Laboratory of Marine Biodiversity and Environment (LR18ES/30), University of Sfax, Sfax CP 3000, Tunisia
| | - Sana Gammoudi
- Laboratory of Marine Biodiversity and Environment (LR18ES/30), University of Sfax, Sfax CP 3000, Tunisia
| | - Habib Ayadi
- Laboratory of Marine Biodiversity and Environment (LR18ES/30), University of Sfax, Sfax CP 3000, Tunisia
| | - Annick Morant-Manceau
- LUNAM, Laboratoire Mer, Molécules, Santé (EA 2160), Université du Maine, Avenue Olivier Messiaen, CEDEX 9, 72085 Le Mans, France
| | - George N. Hotos
- Plankton Culture Laboratory, Department of Fisheries and Aquaculture, University of Patras, 30200 Messolonghi, Greece
- Correspondence:
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Liang SXT, Djearamane S, Tanislaus Antony Dhanapal AC, Wong LS. Impact of silver nanoparticles on the nutritional properties of Arthrospira platensis. PeerJ 2022; 10:e13972. [PMID: 36248713 PMCID: PMC9563293 DOI: 10.7717/peerj.13972] [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: 02/14/2022] [Accepted: 08/09/2022] [Indexed: 01/19/2023] Open
Abstract
Background Arthrospira platensis is farmed worldwide due to its nutrient-rich properties and provides multiple benefits to human health. However, the wide usage of silver nanoparticles (Ag NPs) causes pollution which may affect the nutritional quality of A. platensis. Hence, this study aimed to investigate the interaction and accumulation of Ag NPs on A. platensis, and determine the changes in biomass and nutritional value of A. platensis due to the exposure to Ag NPs. Methods The interaction and accumulation of Ag NPs on A. platensis were examined through Fourier transformed infrared (FTIR) spectroscopy and scanning electron microscope (SEM). The loss in biomass together with the macromolecules, pigments, and phenolic compounds of A. platensis was investigated upon treating with various concentrations of Ag NPs (5, 10, 25, 50 and 100 µg/mL) for 24, 48, 72 and 96 h. Results The results showed that the treatment of A. platensis with Ag NPs caused a dose and time-dependent reduction in biomass, macronutrients, pigments and phenolic compounds. The highest detrimental effects were found at 96 h with the reported values of 65.71 ± 2.79%, 67.21 ± 3.98%, 48.99 ± 4.39% and 59.62 ± 3.96% reduction in biomass, proteins, carbohydrates and lipids, respectively, along with 82.99 ± 7.81%, 67.55 ± 2.63%, 75.03 ± 1.55%, and 63.43 ± 2.89% loss in chlorophyll-a, carotenoids, C-phycocyanin, and total phenolic compounds of A. platensis for 100 µg/mL of Ag NPs. The EDX analysis confirmed the surface accumulation of Ag NPs on Arthrospira cells, while SEM images evidenced the surface alterations and damage of the treated cells. The functional groups such as hydroxyl, amine, methyl, amide I, amide II, carboxyl, carbonyl and phosphate groups from the cell wall of the A. platensis were identified to be possibly involved in the interaction of Ag NPs with A. platensis. Conclusion The study confirmed that the exposure of Ag NPs is detrimental to A. platensis where the interaction and accumulation of Ag NPs on A. platensis caused reduction in biomass, macromolecules, pigments, and total phenolic compounds.
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Affiliation(s)
- Sharolynne Xiao Tong Liang
- Department of Biomedical Science, Faculty of Science, Universiti Tunku Abdul Rahman, Kampar, Perak, Malaysia
| | - Sinouvassane Djearamane
- Department of Biomedical Science, Faculty of Science, Universiti Tunku Abdul Rahman, Kampar, Perak, Malaysia
| | | | - Ling Shing Wong
- Faculty of Health and Life Sciences, INTI International University, Nilai, Negeri Sembilan, Malaysia
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Nutritional Quality and Safety of the Spirulina Dietary Supplements Sold on the Slovenian Market. Foods 2022; 11:foods11060849. [PMID: 35327271 PMCID: PMC8954120 DOI: 10.3390/foods11060849] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 03/11/2022] [Accepted: 03/14/2022] [Indexed: 01/13/2023] Open
Abstract
The microalgae Spirulina may be a popular dietary supplement rich in essential nutrients and vitamins, but oversight of the supplement industry, in general, remains limited, and increasing incidents of adulteration, misbranding, and undeclared ingredients together with misleading claims create potential risks. In response, this study characterized the elemental, amino acid and fatty acid content of commercially available Spirulina supplements in Slovenia using EDXRF, ICP-MS and GC-MS and compared the results with their nutritional declaration. The gathered data confirm that Spirulina supplements are a good source of calcium (0.15 to 29.5% of RDA), phosphorous (3.36–26.7% of RDA), potassium (0.5 to 7.69% of RDA) and selenium (0.01 to 38.6% of RDA) when consumed within recommended amounts. However, although iron contents were relatively high (7.64 to 316% of RDA), the actual bioavailability of iron was much lower since it was mainly present as the ferric cation. This study also confirms that pure Spirulina supplements are a good source of essential and non-essential amino acids, and ω-6 but not ω-3 polyunsaturated fatty acids. The presence of additives resulted in significant variation in nutrient content and, in some instances, lower product quality. Moreover, a high proportion (86.7%) of inappropriate declarations regarding the elemental content was observed. Overall, the study conclusions underline the need for a stricter control system for Spirulina-based supplements.
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Nosratimovafagh A, Fereidouni AE, Krujatz F. Modeling and Optimizing the Effect of Light Color, Sodium Chloride and Glucose Concentration on Biomass Production and the Quality of Arthrospira platensis Using Response Surface Methodology (RSM). Life (Basel) 2022; 12:life12030371. [PMID: 35330122 PMCID: PMC8953219 DOI: 10.3390/life12030371] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/26/2022] [Accepted: 02/28/2022] [Indexed: 12/27/2022] Open
Abstract
Arthrospira platensis (Spirulina) biomass is a valuable source of sustainable proteins, and the basis for new food and feed products. State-of-the-art production of Spirulina biomass in open pond systems only allows limited control of essential process parameters, such as light color, salinity control, or mixotrophic growth, due to the high risk of contaminations. Closed photobioreactors offer a highly controllable system to optimize all process parameters affecting Spirulina biomass production (quantity) and biomass composition (quality). However, a comprehensive analysis of the impact of light color, salinity effects, and mixotrophic growth modes of Spirulina biomass production has not been performed yet. In this study, Response Surface Methodology (RSM) was employed to develop statistical models, and define optimal mixotrophic process conditions yielding maximum quantitative biomass productivity and high-quality biomass composition related to cellular protein and phycocyanin content. The individual and interaction effects of 0, 5, 15, and 30 g/L of sodium chloride (S), and 0, 1.5, 2, and 2.5 g/L of glucose (G) in three costume-made LED panels (L) where the dominant color was white (W), red (R), and yellow (Y) were investigated in a full factorial design. Spirulina was cultivated in 200 mL cell culture flasks in different treatments, and data were collected at the end of the log growth phase. The lack-of-fit test showed that the cubic model was the most suitable to predict the biomass concentration and protein content, and the two-factor interaction (2FI) was preferred to predict the cellular phycocyanin content (p > 0.05). The reduced models were produced by excluding insignificant terms (p > 0.05). The experimental validation of the RSM optimization showed that the highest biomass concentration (1.09, 1.08, and 0.85 g/L), with improved phycocyanin content of 82.27, 59.47, 107 mg/g, and protein content of 46.18, 39.76, 53.16%, was obtained under the process parameter configuration WL4.28S2.5G, RL10.63S1.33G, and YL1.00S0.88G, respectively.
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Affiliation(s)
- Ahmad Nosratimovafagh
- Department of Fisheries Science, Faculty of Animal Sciences and Fisheries, Sari Agricultural Sciences and Natural Resources University (SANRU), Sari P.O. Box 578, Iran;
| | - Abolghasem Esmaeili Fereidouni
- Department of Fisheries Science, Faculty of Animal Sciences and Fisheries, Sari Agricultural Sciences and Natural Resources University (SANRU), Sari P.O. Box 578, Iran;
- Correspondence: ; Tel.: +98-1133822565
| | - Felix Krujatz
- Institute of Natural Materials Technology, TU Dresden, Bergstraße 120, 01069 Dresden, Germany;
- biotopa gGmbH—Center for Applied Aquaculture & Bioeconomy, Bautzner Landstraße 45, 01454 Radeberg, Germany
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Microalgae as Feed Ingredients and a Potential Source of Competitive Advantage in Livestock Production: A review. Livest Sci 2022. [DOI: 10.1016/j.livsci.2022.104907] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Hadiyanto H, Muslihuddin M, Khoironi A, Pratiwi WZ, Fadlilah MN, Muhammad F, Afiati N, Dianratri I. The effect of salinity on the interaction between microplastic polyethylene terephthalate (PET) and microalgae Spirulina sp. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:7877-7887. [PMID: 34480706 DOI: 10.1007/s11356-021-16286-z] [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: 02/07/2021] [Accepted: 08/28/2021] [Indexed: 06/13/2023]
Abstract
The increasing use of plastic over the last few decades has had an impact of plastic pollution in aquatic ecosystems. Plastic pollutions may be in the form of microplastics either from primary or secondary sources. These microplastics will indirectly affect human health through the food chain. This research was aimed at evaluating the interaction between microplastic and microalgae that are a source of food supplements. The experiment was conducted by investigating the impact of microplastic polyethylene terephthalate (PET) on microalga Spirulina sp. cultivated in fresh water and saline water (7 ppt salinity) for 14 days. The growth rate and morphology of Spirulina sp. and PET were evaluated. The result showed that the presence of PET and salinity decreased Spirulina sp. growth rate in cultivation by 0.174 day-1 and reduced nutrient removal rates. However, the salinity system on medium-added PET was indicated that there are influences of Spirulina sp. against PET, where PET can be degraded by Spirulina sp. in the state of water with a salinity 7 ppt. FTIR graphic seems if there is any peak declination within PET augmentation in media with 0 ppt salinization. Nonetheless, the peak augmentation happened within PET augmentation in media with 7 ppt salinity. This signifies if there is an augmentation of PET salinization can be degraded by Spirulina sp. as the polysaccharide sources. PET is resistant to degradation due to its aromatic group. Based on the results scanning electron microscope (SEM), Spirulina sp. which growth with PET had a more uneven shape compared with a control variable.
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Affiliation(s)
- Hadiyanto Hadiyanto
- Center of Biomass and Renewable Energy (CBIORE), Chemical Engineering Department, Diponegoro University, Semarang, Indonesia.
- Graduate Program of Environmental Sciences, School of Postgraduate Studies, Diponegoro University, Semarang, Indonesia.
| | - Muslihuddin Muslihuddin
- Center of Biomass and Renewable Energy (CBIORE), Chemical Engineering Department, Diponegoro University, Semarang, Indonesia
| | - Adian Khoironi
- Center of Biomass and Renewable Energy (CBIORE), Chemical Engineering Department, Diponegoro University, Semarang, Indonesia
- Study Program of Environmental Health, Faculty of Health, Dian Nuswantoro University, Semarang, Indonesia
| | - Wahyu Zuli Pratiwi
- Center of Biomass and Renewable Energy (CBIORE), Chemical Engineering Department, Diponegoro University, Semarang, Indonesia
| | - Muthia'ah Nur Fadlilah
- Center of Biomass and Renewable Energy (CBIORE), Chemical Engineering Department, Diponegoro University, Semarang, Indonesia
| | - Fuad Muhammad
- Graduate Program of Environmental Sciences, School of Postgraduate Studies, Diponegoro University, Semarang, Indonesia
- Department of Fisheries, Faculty of Fisheries and Marine Sciences, Diponegoro University, Semarang, Indonesia
- Biology Department, Faculty of Sciences and Mathematics, Diponegoro University, Semarang, Indonesia
| | - Norma Afiati
- Department of Fisheries, Faculty of Fisheries and Marine Sciences, Diponegoro University, Semarang, Indonesia
| | - Inggar Dianratri
- Center of Biomass and Renewable Energy (CBIORE), Chemical Engineering Department, Diponegoro University, Semarang, Indonesia
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Ohira Y, Shimadzu M. Effect of Medium Concentration on Specific Growth Rate of Blue–Green alga, Spirulina platensis. KAGAKU KOGAKU RONBUN 2021. [DOI: 10.1252/kakoronbunshu.47.140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yuichi Ohira
- Division of Sustainable Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology
| | - Masamitsu Shimadzu
- Division of Sustainable Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology
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Physicochemical Evaluation of Edible Cyanobacterium Arthrospira platensis Collected from the South Atlantic Coast of Morocco: A Promising Source of Dietary Supplements. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:3337231. [PMID: 34335805 PMCID: PMC8286187 DOI: 10.1155/2021/3337231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/07/2021] [Accepted: 06/28/2021] [Indexed: 11/26/2022]
Abstract
The cyanobacterium Arthrospira platensis (A. platensis)—a genus of nonheterocystous filamentous cyanobacteria—is used in industrial applications and as a food supply. The current research work aims to study the physicochemical characteristics of A. platensis indigenous to the Moroccan Atlantic coast at Laayoune (Foum El Oued lagoon). The contents of proteins, carbohydrates, vitamins, lipids, minerals, heavy metals, energy value, humidity, ash, pigments, and tannins in A. platensis were investigated using protocols as described in the earlier literature. The values of protein, carbohydrate, and lipid contents in A. platensis were 58.9 ± 0.07, 14.67, and 45.54% respectively. The values of vitamins B2 and B3 dosed in A. platensis were 1.31 ± 0.19 and 30.8 ± 0.001 mg/kg, respectively. The values of heavy metals including lead and chromium were 70 ± 4.5 and 5 ± 0.5 PPB (parts-per-billion), respectively; however, no trace concerning cadmium was detected. The values of energy value, humidity, and ash content were 346.48 ± 0.21, 11.6 ± 0.17%, and 9.1 ± 0.21% kcal/100 g, respectively. The results of pigment content showed the presence of chlorophyll b, chlorophyll a, and carotenoids of 37.506 ± 3.38, 26.066 ± 3.08, and 9.52 ± 0.22 mg/g, respectively. The results obtained revealed that A. platensis indigenous to the Moroccan Atlantic coast at Laayoune was found to be very rich in proteins, carbohydrates, vitamins, minerals, ash, and pigments and lower in heavy metals and saturated fats when compared with species investigated in the literature. Thus, A. platensis indigenous to the Moroccan Atlantic coast at Laayoune fulfills the requirements for being used as dietary supplements.
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Physiological and Proteomic Studies of the Cyanobacterium Anabaena sp. Acclimated to Desiccation Stress. Curr Microbiol 2021; 78:2429-2439. [PMID: 33983480 DOI: 10.1007/s00284-021-02504-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 04/21/2021] [Indexed: 10/21/2022]
Abstract
Agricultural productivity is threatened by increasing incidence of drought and the drought tolerant cyanobacteria offer a better solution in the restoration of soil fertility and productivity. The present study describes the comparative physiological response of the cyanobacterium Anabaena sp. acclimated and un-acclimated to desiccation stress induced by polyethylene glycol (10% PEG). While, the acclimated cyanobacterial cells grew luxuriantly with optimal chlorophyll content, photosynthetic activities and nitrogen fixation, the un-acclimated cells exhibited reduced growth rate, chlorophyll content, photosynthetic activities and nitrogen fixation. Distinct differences in the accumulation of lipid peroxidation products, proline and activity of superoxide dismutase were observed under identical growth conditions in the acclimated and un-acclimated cells. Desiccation-acclimated and un-acclimated cyanobacteria showed significant alterations in the abundance of important proteins in the proteome. Two-dimensional gel electrophoresis followed by MALDI-TOF-MS/MS analysis identified twelve proteins. The acclimated cells showed the up regulation of proteins such as Rubisco, fructose-bis-phosphate aldolase, fructose 1-6 bisphosphatase, phosphoglycerate dehydrogenase and elongation factors Tu and Ts as compared to un-acclimated cells. Therefore, the ability to maintain photosynthesis, antioxidants and increased accumulation of proteins related to energy metabolism helped the acclimated cyanobacterium Anabaena sp. to grow optimally under desiccation stress conditions.
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A microwave-based technique to determine saccharides and polyols contents in Spirulina (Arthrospira platensis). ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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11
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Jangir MM, Chowdhury S, Bhagavatula V. Differential response of photosynthetic apparatus towards alkaline pH treatment in NIES-39 and PCC 7345 strains of Arthrospira platensis. Int Microbiol 2021; 24:219-231. [PMID: 33438119 DOI: 10.1007/s10123-021-00160-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/21/2020] [Accepted: 01/04/2021] [Indexed: 10/22/2022]
Abstract
Alkaline stress is one of the severe abiotic stresses, which is not well studied so far, especially among cyanobacteria. To affirm the characteristics of alkaline stress and the subsequent adaptive responses in Arthrospira platensis NIES-39 and Arthrospira platensis PCC 7345, photosynthetic pigments, spectral properties of thylakoids, PSII and PSI activities, and pigment-protein profiles of thylakoids under different pH regimes were examined. The accessory pigments showed a pH-mediated sensitivity. The pigment-protein complexes of thylakoids are also affected, resulting in the altered fluorescence emission profile. At pH 11, a possible shift of the PBsome antenna complex from PSII to PSI is observed. PSII reaction center is found to be more susceptible to alkaline stress in comparison to the PSI. In Arthrospira platensis NIES-39 at pH 11, a drop of 68% in the oxygen evolution with a significant increase of PSI activity by 114% is recorded within 24 h of pH treatment. Alterations in the cellular ultrastructure of Arthrospira platensis NIES-39 at pH 11 were observed, along with the increased number of plastoglobules attached with the thylakoid membranes. Arthrospira platensis NIES-39 is more adaptable to pH variation than Arthrospira platensis PCC 7345.
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Affiliation(s)
- Monika Mahesh Jangir
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, Rajasthan, 333031, India
| | - Shibasish Chowdhury
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, Rajasthan, 333031, India.
| | - Vani Bhagavatula
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, Rajasthan, 333031, India.
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Growing Spirulina (Arthrospira platensis) in seawater supplemented with digestate: Trade-offs between increased salinity, nutrient and light availability. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2020.107815] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Li X, Zhang X, Wang X, Yang X, Cui Z. Bioaugmentation-assisted phytoremediation of lead and salinity co-contaminated soil by Suaeda salsa and Trichoderma asperellum. CHEMOSPHERE 2019; 224:716-725. [PMID: 30851523 DOI: 10.1016/j.chemosphere.2019.02.184] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 02/21/2019] [Accepted: 02/26/2019] [Indexed: 06/09/2023]
Abstract
The combined application of plant Suaeda salsa and indigenous fungus Trichoderma asperellum on the treatment of a lead (Pb) and salinity (Na+ and Ca2+) co-contaminated soil was investigated by a flowerpot experiment. As demonstrated by plant growth and selected antioxidant parameters, S. salsa was able to tolerate and grow in the co-contaminated soil, especially bioaugmented with T. asperellum, which promoted plant growth (9-23% and 5-13% increases for plant height and fresh weight, respectively) and appeared to alleviate plant oxidative damage (7-85% and 7-49% decreases for plant malondialdehyde and peroxidase levels, respectively). The SDS-PAGE fingerprints indicated that the total protein contents of S. salsa were affected under Pb and salinity stresses. The interactions of Na+ and Ca2+ ions on the phytotoxicity of Pb remained hormesis phenomenon that low-dose alleviation and high-dose enhancement. The analysis of phytoextraction parameters and bioavailability demonstrated that Pb was mainly concentrated in plant roots and poorly translocated, indicating the phytostabilization served as a major repair pathway. On the contrary, the Na+ and Ca2+ ions were concentrated in plant by the following order: shoot > root. Moreover, bioaugmentation of planted soil with T. asperellum generally led to the 9-42%, 13-58%, and 19-30% decreases of plant Pb, Na+, and Ca2+ concentrations and translocations, respectively, as well as a 6-21% decrease of soil Pb bioavailability. This study provided a bioaugmentation-assisted phytoremediation technique to make up the deficiencies of the long-term remediation for heavy metals and salinity.
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Affiliation(s)
- Xinxin Li
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Xu Zhang
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Xinlei Wang
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Xiaoyong Yang
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Zhaojie Cui
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China.
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Swapnil P, Rai AK. Physiological responses to salt stress of salt-adapted and directly salt (NaCl and NaCl+Na 2SO 4 mixture)-stressed cyanobacterium Anabaena fertilissima. PROTOPLASMA 2018; 255:963-976. [PMID: 29352355 DOI: 10.1007/s00709-018-1205-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 01/10/2018] [Indexed: 05/13/2023]
Abstract
Soil salinity in nature is generally mixed type; however, most of the studies on salt toxicity are performed with NaCl and little is known about sulfur type of salinity (Na2SO4). Present study discerns the physiologic mechanisms responsible for salt tolerance in salt-adapted Anabaena fertilissima, and responses of directly stressed parent cells to NaCl and NaCl+Na2SO4 mixture. NaCl at 500 mM was lethal to the cyanobacterium, whereas salt-adapted cells grew luxuriantly. Salinity impaired gross photosynthesis, electron transport activities, and respiration in parent cells, but not in the salt-adapted cells, except a marginal increase in PSI activity. Despite higher Na+ concentration in the salt mixture, equimolar NaCl appeared more inhibitive to growth. Sucrose and trehalose content and antioxidant activities were maximal in 250 mM NaCl-treated cells, followed by salt mixture and was almost identical in salt-adapted (exposed to 500 mm NaCl) and control cells, except a marginal increase in ascorbate peroxidase activity and an additional fourth superoxide dismutase isoform. Catalase isoform of 63 kDa was induced only in salt-stressed cells. Salinity increased the uptake of intracellular Na+ and Ca2+ and leakage of K+ in parent cells, while cation level in salt-adapted cells was comparable to control. Though there was differential increase in intracellular Ca2+ under different salt treatments, ratio of Ca2+/Na+ remained the same. It is inferred that stepwise increment in the salt concentration enabled the cyanobacterium to undergo priming effect and acquire robust and efficient defense system involving the least energy.
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Affiliation(s)
- Prashant Swapnil
- Department of Botany, Banaras Hindu University, Varanasi, 221005, India
| | - Ashwani K Rai
- Department of Botany, Banaras Hindu University, Varanasi, 221005, India.
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Li Y, Wang Y, Gao Y, Zhao H, Zhou W. Seawater toilet flushing sewage treatment and nutrients recovery by marine bacterial-algal mutualistic system. CHEMOSPHERE 2018; 195:70-79. [PMID: 29253791 DOI: 10.1016/j.chemosphere.2017.12.076] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 12/02/2017] [Accepted: 12/11/2017] [Indexed: 06/07/2023]
Abstract
Seawater toilet flushing sewage with excess eutrophic and high salinity brought a great barrier on the municipal wastewater treatment plants. Nutrients recovery and biomass production as potential biofuel feedstock with less energy consumption will be a key challenge in wastewater treatment. In the optimal inoculation of algae and bacteria, a marine bacterial-algal mutualistic system was established to treat synthetic seawater toilet flushing sewage without extra carbon and O2 addition. It was showed that 85.5% of total nitrogen (TN) (from 200 mg/L), 91.0% of total phosphorus (TP) (from 40 mg/L) and 98.7% of chemical oxygen demand (COD) (from 1600 mg/L) were removed with 4.28 g/L of biomass yield (biomass productivity 159.3 mg/L/d) containing 16.3% lipid and 62.6% protein, which performance mainly achieved by bacteria during first six days and algae functioned subsequently. Both nitrogen and phosphorus removal of the system were mainly assimilation/accumulation. Algal facultative heterotrophia ensured dissolved organic carbon for bacterial utilization and avoiding excessive organic matter produced. The established algal-bacterial system provided a potential energy-efficient and eco-friendly approach for seawater blackwater treatment and nutrients recovery simultaneously.
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Affiliation(s)
- Yating Li
- School of Environmental Science and Engineering, Shandong University, Jinan, Shandong, 250100, China
| | - Yafei Wang
- School of Environmental Science and Engineering, Shandong University, Jinan, Shandong, 250100, China
| | - Yizhan Gao
- School of Environmental Science and Engineering, Shandong University, Jinan, Shandong, 250100, China
| | - Haixia Zhao
- School of Environmental Science and Engineering, Shandong University, Jinan, Shandong, 250100, China
| | - Weizhi Zhou
- School of Environmental Science and Engineering, Shandong University, Jinan, Shandong, 250100, China.
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16
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Andemichael H, Lee JW. Toxicological study of biofuel ethanol with blue green alga Spirulina platensis. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.05.032] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Optimization of Growth Conditions for Purification and Production of L-Asparaginase by Spirulina maxima. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:1785938. [PMID: 27525017 PMCID: PMC4976183 DOI: 10.1155/2016/1785938] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 04/03/2016] [Accepted: 05/30/2016] [Indexed: 11/17/2022]
Abstract
L-asparaginase (L-AsnA) is widely distributed among microorganisms and has important applications in medicine and in food technology sectors. Therefore, the ability of the production, purification, and characterization of AsnA from Spirulina maxima (SM) were tested. SM cultures grown in Zarrouk medium containing different N2 (in NaNO3 form) concentrations (1.25, 2.50, and 5.0 g/L) for 18 days contained a significant various quantity of dry biomass yields and AsnA enzyme levels. MS L-AsnA activity was found to be directly proportional to the N2 concentration. The cultures of SM at large scales (300 L medium, 5 g/L N2) showed a high AsnA enzyme activity (898 IU), total protein (405 mg/g), specific enzyme activity (2.21 IU/mg protein), and enzyme yield (51.28 IU/L) compared with those in low N2 cultures. The partial purification of crude MS AsnA enzyme achieved by 80% ammonium sulfate AS precipitated and CM-Sephadex C-200 gel filtration led to increases in the purification of enzyme with 5.28 and 10.91 times as great as that in SM crude enzymes. Optimum pH and temperature of purified AsnA for the hydrolyzate were 8.5 and 37 ± 0.2°C, respectively. To the best of our knowledge, this is the first report on L-asparaginase production in S. maxima.
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A Multivariate Approach to Evaluate Biomass Production, Biochemical Composition and Stress Compounds of Spirulina platensis Cultivated in Wastewater. Appl Biochem Biotechnol 2016; 180:728-739. [DOI: 10.1007/s12010-016-2128-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 05/06/2016] [Indexed: 10/21/2022]
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Swapnil P, Singh M, Singh S, Sharma NK, Rai AK. Recombinant glycinebetaine improves metabolic activities, ionic balance and salt tolerance in diazotrophic freshwater cyanobacteria. ALGAL RES 2015. [DOI: 10.1016/j.algal.2015.06.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Toyoshima M, Aikawa S, Yamagishi T, Kondo A, Kawai H. A pilot-scale floating closed culture system for the multicellular cyanobacterium Arthrospira platensis NIES-39. JOURNAL OF APPLIED PHYCOLOGY 2014; 27:2191-2202. [PMID: 26523091 PMCID: PMC4621703 DOI: 10.1007/s10811-014-0484-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 11/28/2014] [Accepted: 11/28/2014] [Indexed: 06/05/2023]
Abstract
Microalgae are considered to be efficient bio-resources for biofuels and bio-based chemicals because they generally have high productivity. The filamentous cyanobacterium Arthrospira (Spirulina) platensis has been widely used for food, feed, and nutrient supplements and is usually cultivated in open ponds. In order to extend the surface area for growing this alga, we designed a pilot-scale floating closed culture system for cultivating A. platensis on open water and compared the growth and quality of the alga harvested at both subtropical and temperate regions. The biomass productivity of A. platensis NIES-39 was ca. 9 g dry biomass m-2 day-1 in summer at Awaji Island (warm temperature region) and ca. 10 and 6 g dry biomass m-2 day-1 in autumn and winter, respectively, at Ishigaki Island, (subtropical region) in Japan. If seawater can be used for culture media, culture cost can be reduced; therefore, we examined the influence of seawater salt concentrations on the growth of A. platensis NIES-39. Growth rates of A. platensis NIES-39 in diluted seawater with enrichment of 2.5 g L-1 NaNO3, 0.01 g L-1 FeSO4·7H2O, and 0.08 g L-1 Na2EDTA were considerably lower than SOT medium, but the biomass productivity (dry weight) was comparable to SOT medium. This is explained by the heavier cell weight of the alga grown in modified seawater media compared to the alga grown in SOT medium. Furthermore, A. platensis grown in modified seawater-based medium exhibited self-flocculation and had more loosely coiled trichomes.
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Affiliation(s)
- Masakazu Toyoshima
- Kobe University Research Center for Inland Seas Rokkodai, Nadaku, Kobe, 657-8501 Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, 3-5 Sanbancho, Chiyodaku, Tokyo, 102-0075 Japan
| | - Shimpei Aikawa
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nadaku, Kobe, 657-8501 Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, 3-5 Sanbancho, Chiyodaku, Tokyo, 102-0075 Japan
| | - Takahiro Yamagishi
- Kobe University Research Center for Inland Seas Rokkodai, Nadaku, Kobe, 657-8501 Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, 3-5 Sanbancho, Chiyodaku, Tokyo, 102-0075 Japan
| | - Akihiko Kondo
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nadaku, Kobe, 657-8501 Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, 3-5 Sanbancho, Chiyodaku, Tokyo, 102-0075 Japan
| | - Hiroshi Kawai
- Kobe University Research Center for Inland Seas Rokkodai, Nadaku, Kobe, 657-8501 Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, 3-5 Sanbancho, Chiyodaku, Tokyo, 102-0075 Japan
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Arba M, Aikawa S, Niki K, Yokono M, Kondo A, Akimoto S. Differences in excitation energy transfer of Arthrospira platensis cells grown in seawater medium and freshwater medium, probed by time-resolved fluorescence spectroscopy. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.10.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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22
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Gu N, Lin Q, Li G, Tan Y, Huang L, Lin J. Effect of salinity on growth, biochemical composition, and lipid productivity ofNannochloropsis oculataCS 179. Eng Life Sci 2012. [DOI: 10.1002/elsc.201100204] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Affiliation(s)
| | - Qiang Lin
- Key Laboratory of Marine Bio-resource Sustainable Utilization; South China Sea Institute of Oceanology; Chinese Academy of Sciences; Guangzhou; China
| | - Gang Li
- Key Laboratory of Marine Bio-resource Sustainable Utilization; South China Sea Institute of Oceanology; Chinese Academy of Sciences; Guangzhou; China
| | - Yehui Tan
- Key Laboratory of Marine Bio-resource Sustainable Utilization; South China Sea Institute of Oceanology; Chinese Academy of Sciences; Guangzhou; China
| | - Liangmin Huang
- Key Laboratory of Marine Bio-resource Sustainable Utilization; South China Sea Institute of Oceanology; Chinese Academy of Sciences; Guangzhou; China
| | - Junda Lin
- Vero Beach Marine Laboratory; Florida Institute of Technology; Vero Beach; FL; USA
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Improvement of the growth of Arthrospira (Spirulina) platensis from Toliara (Madagascar): Effect of agitation, salinity and CO2 addition. FOOD AND BIOPRODUCTS PROCESSING 2011. [DOI: 10.1016/j.fbp.2010.04.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Lipok J, Studnik H, Gruyaert S. The toxicity of Roundup® 360 SL formulation and its main constituents: glyphosate and isopropylamine towards non-target water photoautotrophs. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2010; 73:1681-8. [PMID: 20813408 DOI: 10.1016/j.ecoenv.2010.08.017] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 08/08/2010] [Accepted: 08/13/2010] [Indexed: 05/29/2023]
Abstract
The toxicity of commercial formulation of Roundup® 360 SL, widely used, nonselective herbicide and its main constituents, glyphosate (PMG), equimolar (1:1) isopropylamine salt of glyphosate (GIPA) and isopropylamine (IPA) was examined towards eight aquatic microphotoautotrophs; seven cyanobacterial strains representing either saline or freshwater communities, and common eukaryotic algae Chlorella vulgaris Beijerinck. Autotrophs were cultured 21 days in their appropriate standard media supplemented with various amounts of Roundup®, glyphosate, GIPA and IPA. The determination of the growth of examined photoautotrophs was performed by time-course measurements of total chlorophyll content in experimental cultures. The growth rates related to corresponding concentrations of chemicals, the EC(50) values and generation doubling time were determined in order to present the toxicity Roundup® 360 SL formulation and its main constituents. Market available formulation of Roundup® was found to possess toxicity significantly higher than this, attributed to its main constituents; however both these compounds, isopropylamine and glyphosate, also inhibited the growth of examined strains in a dose-dependent manner. Notably, the interpretation of toxicity of the examined substances was found to be significantly dependent on the method of EC(50) calculation. The choice of molar or weight concentration of substances tested separately and in specific formulation was found to be essential in this matter. Due to these findings the EC(50) values were calculated based either on molar or on weight concentrations. Considering Roundup® 360 SL formulation, these values ranged from 10(-3) up to 10(-1) mM and they were one order of magnitude lower than those found for isopropylamine. Quite surprisingly the minimum EC(50) values found for glyphosate did not reach micromolar concentrations, whereas most of the EC(50) values revealed to IPA did not exceed this range. Notably, in all the cases except for Synechocystis aquatilis Sauvageau, isopropylamine alone was indicated as more toxic than glyphosate.
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Affiliation(s)
- Jacek Lipok
- Faculty of Chemistry, Opole University, Oleska 48, 45-052 Opole, Poland.
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25
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Fujisawa T, Narikawa R, Okamoto S, Ehira S, Yoshimura H, Suzuki I, Masuda T, Mochimaru M, Takaichi S, Awai K, Sekine M, Horikawa H, Yashiro I, Omata S, Takarada H, Katano Y, Kosugi H, Tanikawa S, Ohmori K, Sato N, Ikeuchi M, Fujita N, Ohmori M. Genomic structure of an economically important cyanobacterium, Arthrospira (Spirulina) platensis NIES-39. DNA Res 2010; 17:85-103. [PMID: 20203057 PMCID: PMC2853384 DOI: 10.1093/dnares/dsq004] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
A filamentous non-N2-fixing cyanobacterium, Arthrospira (Spirulina) platensis, is an important organism for industrial applications and as a food supply. Almost the complete genome of A. platensis NIES-39 was determined in this study. The genome structure of A. platensis is estimated to be a single, circular chromosome of 6.8 Mb, based on optical mapping. Annotation of this 6.7 Mb sequence yielded 6630 protein-coding genes as well as two sets of rRNA genes and 40 tRNA genes. Of the protein-coding genes, 78% are similar to those of other organisms; the remaining 22% are currently unknown. A total 612 kb of the genome comprise group II introns, insertion sequences and some repetitive elements. Group I introns are located in a protein-coding region. Abundant restriction-modification systems were determined. Unique features in the gene composition were noted, particularly in a large number of genes for adenylate cyclase and haemolysin-like Ca2+-binding proteins and in chemotaxis proteins. Filament-specific genes were highlighted by comparative genomic analysis.
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Affiliation(s)
- Takatomo Fujisawa
- Bioresource Information Center, Department of Biotechnology, National Institute of Technology and Evaluation, 2-10-49 Nishihara, Shibuya-ku, Tokyo 151-0066, Japan
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Celekli A, Yavuzatmaca M. Predictive modeling of biomass production by Spirulina platensis as function of nitrate and NaCl concentrations. BIORESOURCE TECHNOLOGY 2009; 100:1847-51. [PMID: 18993057 DOI: 10.1016/j.biortech.2008.09.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2008] [Revised: 09/16/2008] [Accepted: 09/22/2008] [Indexed: 05/24/2023]
Abstract
Effects of nitrate (2.0, 2.5, and 3.0 g L(-1)) and salt (0.5, 1.0, 1.5, 2.0 g L(-1)) concentrations on biomass production by Spirulinaplatensis was examined in the Schlösser medium. The highest (p<0.001) biomass yields and chlorophyll a content was observed at 2.5 g L(-1) nitrate and 1.5 g L(-1) NaCl as 3.495 g L(-1) and 29.92 mg L(-1), respectively. Increment rate of biomass production was especially found between 72 and 216 h. Modified Richards, Schnute, Logistic and Gompertz models was successfully predicted (r(2)>0.96 and RSS0.003) biomass production by S.platensis as function of nitrate and salt concentrations. Low residual sum of squares (RSS) and high regression coefficients (r(2)) indicated that used models were well fitted to the experiment data and it could be regarded as sufficient to describe biomass production of Spirulina sp. Biological variables i.e. production rate (micro) and lag time (lambda) for S.platensis ranged 0.012-0.034 h(-1) and 2.43-5.85 h, respectively from biomass production were successfully predicted by modified Logistic model according to low RSS and F-testing value.
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Affiliation(s)
- Abuzer Celekli
- Department of Biology, Faculty of Art and Science, University of Gaziantep, Gaziantep, Turkey.
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Prospects of in vivo 31P NMR method in glyphosate degradation studies in whole cell system. Enzyme Microb Technol 2009. [DOI: 10.1016/j.enzmictec.2008.09.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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28
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Ohmori K, Ehira S, Kimura S, Ohmori M. Changes in the Amount of Cellular Trehalose, the Activity of Maltooligosyl Trehalose Hydrolase, and the Expression of Its Gene in Response to Salt Stress in the Cyanobacterium Spirulina platensis. Microbes Environ 2009; 24:52-6. [DOI: 10.1264/jsme2.me08537] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Kazuko Ohmori
- Graduate School of Life Sciences, Showa Women's University
| | - Shigeki Ehira
- Graduate School of Science and Technology, Saitama University
| | - Satoshi Kimura
- Graduate School of Science and Technology, Saitama University
| | - Masayuki Ohmori
- Graduate School of Science and Technology, Saitama University
- Faculty of Science and Engineering, Chuo University
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Effects of carbon dioxide feeding rate and light intensity on the fed-batch pulse-feeding cultivation of Spirulina platensis in helical photobioreactor. Biochem Eng J 2008. [DOI: 10.1016/j.bej.2007.10.007] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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30
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Lipok J, Owsiak T, Młynarz P, Forlani G, Kafarski P. Phosphorus NMR as a tool to study mineralization of organophosphonates—The ability of Spirulina spp. to degrade glyphosate. Enzyme Microb Technol 2007. [DOI: 10.1016/j.enzmictec.2007.02.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Jagiełło M, Minta E, Chojnacka K, Kafarski P. Mode of biosorption of chromium(III) by Spirulina species cells from aqueous solutions. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2006; 78:740-3. [PMID: 16929645 DOI: 10.2175/106143005x72885] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The ability of commercial Spirulina species to remove chromium(III) [Cr(III)] from an aqueous environment was studied under photoautotrophic conditions. Biomass displayed high adsorptive capacity, with recorded sorption rates up to 99% at a concentration range of 0.02 to 0.18 mg chromium ions/mL of medium. Using isolated cell wall preparations, it was shown that Cr(III) is mainly sorbed onto the surface of cell walls and that the sorption capacity of the walls is enormously high. Living cells of cyanobacteria show the tendency to form multilayer sorption systems, as indicated electron microscopy.
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Affiliation(s)
- Monika Jagiełło
- Institute of Organic Chemistry, Biochemistry, and Biotechnology, Wrocław University of Technology, Poland
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