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Demirden SF, Erdogan B, Öncel DŞ, Oncel SS. Effect of culture hydrodynamics on Arthrospira platensis production using a single-use photobioreactor system through a CFD supported approach. Biotechnol Prog 2024:e3480. [PMID: 38766884 DOI: 10.1002/btpr.3480] [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: 02/02/2024] [Revised: 05/04/2024] [Accepted: 05/06/2024] [Indexed: 05/22/2024]
Abstract
Laboratory scale conventional single-use bioreactor was used to investigate the effect of different stirrer speeds on the Arthrospira platensis (Spirulina platensis) culture. Experiments were handled in two steps. First step was the selection of the stirring speeds, which was simulated via using CFD, and the second was the long term cultivation with the selected speed. During 10 days of batches as the first step, under identical culture conditions, stirrer speed of 230 rpm gave higher results, compared to 130 and 70 rpm, with respect to dry biomass weight, absorbance value (AB) and chlorophyll-a concentration. Volumetric productivity during the growth phase of the cultures were calculated as 0.39 ± 0.03, 0.28 ± 0.01, and 0.19 ± 0.02 g L-1 d-1, from the fast to the slower speeds. According to the results a 17 day batch was handled with 230 rpm in order to monitor the effects on the culture. The culture reached a volumetric productivity of 0.33 ± 0.04 g L-1 d-1. Statistical analysis showed the significance of the parameters related with the stirring speed.
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Affiliation(s)
- S Furkan Demirden
- Department of Bioengineering, Faculty of Engineering, Ege University, Bornova, Turkey
| | - Barıs Erdogan
- Department of Bioengineering, Faculty of Engineering, Ege University, Bornova, Turkey
| | - Deniz Şenyay Öncel
- Department of Biomechanics, Institute of Health Sciences, Dokuz Eylül University, Izmir, Turkey
| | - Suphi S Oncel
- Department of Bioengineering, Faculty of Engineering, Ege University, Bornova, Turkey
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2
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Lu K, Hu Q, Zhai L, Zhu Z, Xu Y, Ding Z, Zeng H, Dong S, Gao S, Mao L. Mineralization of Few-Layer Graphene Made It Bioavailable in Chlamydomonas reinhardtii. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:15255-15265. [PMID: 37768274 DOI: 10.1021/acs.est.3c04549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
Numerous studies have emphasized the toxicity of graphene-based nanomaterials to algae, however, the fundamental behavior and processes of graphene in biological hosts, including its transportation, metabolization, and bioavailability, are still not well understood. As photosynthetic organisms, algae are key contributors to carbon fixation and may play an important role in the fate of graphene. This study investigated the biological fate of 14C-labeled few-layer graphene (14C-FLG) in Chlamydomonas reinhardtii (C. reinhardtii). The results showed that 14C-FLG was taken up by C. reinhardtii and then translocated into its chloroplast. Metabolomic analysis revealed that 14C-FLG altered the metabolic profiles (including sugar metabolism, fatty acid, and tricarboxylic acid cycle) of C. reinhardtii, which promoted the photosynthesis of C. reinhardtii and then enhanced their growth. More importantly, the internalized 14C-FLG was metabolized into 14CO2, which was then used to participate in the metabolic processes required for life. Approximately 61.63%, 25.31%, and 13.06% of the total radioactivity (from 14CO2) was detected in carbohydrates, lipids, and proteins of algae, respectively. Overall, these results reveal the role of algae in the fate of graphene and highlight the potential of available graphene in bringing biological effects to algae, which helps to better assess the environmental risks of graphene.
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Affiliation(s)
- Kun Lu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210023, China
| | - Qingyuan Hu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210023, China
| | - Li Zhai
- Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Hong Kong, China
| | - Zhiyu Zhu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210023, China
| | - Yunsong Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210023, China
| | - Zhaohui Ding
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210023, China
| | - Hang Zeng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210023, China
| | - Shipeng Dong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210023, China
| | - Shixiang Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210023, China
| | - Liang Mao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210023, China
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Nascimento RRC, Moreno MR, Azevedo RS, Costa JAV, Marins LF, Santos LO. Magnetic Fields as Inducers of Phycobiliprotein Production by Synechococcus elongatus PCC 7942. Curr Microbiol 2023; 80:242. [PMID: 37300570 DOI: 10.1007/s00284-023-03348-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023]
Abstract
This study aimed to analyze the effect of magnetic field (MF) application on the metabolism of Synechococcus elongatus PCC 7942. Concentrations of biomass, carbohydrate, protein, lipid, and photosynthetic pigments (chlorophyll-a, C-phycocyanin, allophycocyanin and phycoerythrin) were determined. In cultures with MF application (30 mT for 24 h d-1), there were increases of 47.5% in total protein content, 87.4% in C-phycocyanin, and 332.8% in allophycocyanin contents, by comparison with the control. Allophycocyanin is the most affected pigment by MF application. Therefore, its biosynthetic route was investigated, and four genes related to its synthesis were found. However, the analysis of the gene expression showed no statistical differences from the control culture, which suggests that induction of such genes may occur soon after MF application with consequent stabilization over time. MF application may be a cost-effective alternative to increase production of compounds of commercial interest by cyanobacteria.
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Affiliation(s)
- Raphael R C Nascimento
- Laboratory of Biotechnology, School of Chemistry and Food, Federal University of Rio Grande, Rio Grande, RS, 96203-900, Brazil
| | - Matheus R Moreno
- Laboratory of Biotechnology, School of Chemistry and Food, Federal University of Rio Grande, Rio Grande, RS, 96203-900, Brazil
| | - Raíza S Azevedo
- Laboratory of Molecular Biology, Institute of Biological Sciences, Federal University of Rio Grande, Rio Grande, RS, 96203-900, Brazil
| | - Jorge A V Costa
- Laboratory of Biochemical Engineering, School of Chemistry and Food, Federal University of Rio Grande, Rio Grande, RS, 96203-900, Brazil
| | - Luis F Marins
- Laboratory of Molecular Biology, Institute of Biological Sciences, Federal University of Rio Grande, Rio Grande, RS, 96203-900, Brazil
| | - Lucielen O Santos
- Laboratory of Biotechnology, School of Chemistry and Food, Federal University of Rio Grande, Rio Grande, RS, 96203-900, Brazil.
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4
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Bauer LM, da Gloria Esquível M, Costa JAV, da Rosa APC, Santos LO. Influence of Cell Wall on Biomolecules Biosynthesis in Chlamydomonas reinhardtii Strains Exposed to Magnetic Fields. Curr Microbiol 2023; 80:96. [PMID: 36737538 DOI: 10.1007/s00284-023-03189-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 01/12/2023] [Indexed: 02/05/2023]
Abstract
The application of magnetic fields (MF) has attracted the attention of researchers due to their efficiency to change cell metabolism. Chlamydomonas reinhardtii is a biotechnologically useful microalga with versatile metabolism that may be a valuable organism to study the effects of the MF in biology. Therefore, two C. reinhardtii strains, one with cell wall (2137) and other which lacks the cell wall (Wt-S1-cc4694), were evaluated that a new sensitivity factor in the analysis could be included. Comparative studies were undertaken with the two C. reinhardtii strains under the MF intensities of 0.005 mT (terrestrial MF - control), 11 and 20 mT. Results indicated that the physical cell wall barrier protected cells against the MF applied during the assays. Only with the highest MF applied (20 mT) a slight increase in lipid concentration in the cell wall strain was detected. The lowest growth of the strain that lacks cell wall (Wt-S1) indicated that these cells are under a negative effect. To cope with the two MF stresses conditions, Wt-S1 cells produced more pigments (chlorophylls and carotenoids) and lipids and enhanced the antioxidant defense system. The raise of these compounds under MF could potentially have a positive biotechnological impact on algal biomass.
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Affiliation(s)
- Lenon M Bauer
- Laboratory of Biotechnology, Chemistry and Food School, Federal University of Rio Grande, Rio Grande, RS, 96203-900, Brazil
| | - Maria da Gloria Esquível
- Landscape, Environment, Agriculture and Food - LEAF Centre, Instituto Superior de Agronomia, Universidade de Lisboa, 1349-017, Lisboa, Portugal
| | - Jorge Alberto V Costa
- Laboratory of Biochemical Engineering, Chemistry and Food School, Federal University of Rio Grande, Rio Grande, RS, 96203-900, Brazil
| | - Ana Priscila C da Rosa
- Laboratory of Biochemical Engineering, Chemistry and Food School, Federal University of Rio Grande, Rio Grande, RS, 96203-900, Brazil
| | - Lucielen O Santos
- Laboratory of Biotechnology, Chemistry and Food School, Federal University of Rio Grande, Rio Grande, RS, 96203-900, Brazil.
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5
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The use of the electromagnetic field in microbial process bioengineering. ADVANCES IN APPLIED MICROBIOLOGY 2022; 121:27-72. [PMID: 36328731 DOI: 10.1016/bs.aambs.2022.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
An electromagnetic field (EMF) has been shown to have various stimulatory or inhibitory effects on microorganisms. Over the years, growing interest in this topic led to numerous discoveries suggesting the potential applicability of EMF in biotechnological processes. Among these observations are stimulative effects of this physical influence resulting in intensified biomass production, modification of metabolic activity, or pigments secretion. In this review, we present the current state of the art and underline the main findings of the application of EMF in bioprocessing and their practical meaning in process engineering using examples selected from studies on bacteria, archaea, microscopic fungi and yeasts, viruses, and microalgae. All biological data are presented concerning the classification of EMF. Furthermore, we aimed to highlight missing parts of contemporary knowledge and indicate weak spots in the approaches found in the literature.
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Syamimi Zaidi N, Syafiuddin A, Sillanpää M, Burhanuddin Bahrodin M, Zhang Zhan L, Ratnasari A, Kadier A, Aamer Mehmood M, Boopathy R. Insights into the potential application of magnetic field in controlling sludge bulking and foaming: A review. BIORESOURCE TECHNOLOGY 2022; 358:127416. [PMID: 35660656 DOI: 10.1016/j.biortech.2022.127416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 05/28/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
The formation of bulking and foaming in biological wastewater treatment could cause a series of operational issues with biomass and effluent quality, ultimately affect the treatment performance of the system. The essential parameters influencing the growth of bulking and foaming bacteria are comprehensively summarised in this paper. Existing bulking and foaming control approached are critically reviewed and addressed, as well as their drawbacks and limitations. Despite the abundance of information and implementation, a complete control technique for limiting filamentous sludge bulking and foaming remains insufficient. Magnetic field application is emphasised as a viable control strategy in this regard. The present review study provides new insight of this application by comparing the use of magnetic fields to conventional treatments. Future outlooks on the use of magnetic fields to prevent BFB proliferation were also highlighted.
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Affiliation(s)
- Nur Syamimi Zaidi
- School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Johor, Malaysia; Centre for Environmental Sustainability and Water Security (IPASA), Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Achmad Syafiuddin
- Environmental Health Division, Department of Public Health, Universitas Nahdlatul Ulama Surabaya, 60237 Surabaya, East Java, Indonesia
| | - Mika Sillanpää
- Department of Civil and Environmental Engineering, Florida International University, Miami, USA
| | - Muhammad Burhanuddin Bahrodin
- School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Johor, Malaysia
| | - Loh Zhang Zhan
- School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Johor, Malaysia
| | - Anisa Ratnasari
- School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Johor, Malaysia
| | - Abudukeremu Kadier
- Laboratory of Environmental Science and Technology, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Muhammad Aamer Mehmood
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Raj Boopathy
- Department of Biological Sciences, Nicholls State University, Thibodaux, LA 70310, USA.
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7
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Li C, Hu Z, Gao Y, Ma Y, Pan X, Li X, Liu S, Chu B. Bioeffects of Static Magnetic Fields on the Growth and Metabolites of C. pyrenoidosa and T. obliquus. J Biotechnol 2022; 351:1-8. [DOI: 10.1016/j.jbiotec.2022.04.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 04/07/2022] [Accepted: 04/07/2022] [Indexed: 10/18/2022]
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8
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Magnetic Field Action on Limnospira indica PCC8005 Cultures: Enhancement of Biomass Yield and Protein Content. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12031533] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The effects of a magnetic field (MF) on the cyanobacteria Limnospira indica PCC 8005 growth rate and biomass composition were investigated. A device to apply the MF during the cultivation was built and the cyanobacteria were exposed to a steady 11 mT transverse MF. The growth increased with MF application, and when it was applied for 1 h per day, 123% more biomass was produced than in the control group. The protein content in the biomass cultured under this condition increased, achieving 60.4 w/w, while the Chl-a increased by 326%. The MF application for 1 h per day was found to be more efficient than when applied continuously for 24 h per day, in addition to being more economical and sustainable. This study showed an inexpensive and non-toxic way to enhance biomass concentration, leading to amounts more than 100% higher than those obtained in the control group. Furthermore, the high protein content in the biomass gave us several possibilities to increase the nutritional value of food.
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Baldev E, MubarakAli D, Sivasubramanian V, Pugazhendhi A, Thajuddin N. Unveiling the induced lipid production in Chlorella vulgaris under pulsed magnetic field treatment. CHEMOSPHERE 2021; 279:130673. [PMID: 34134428 DOI: 10.1016/j.chemosphere.2021.130673] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 04/03/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
The pulsed magnetic field (PMF) was adopted for the enhancement of lipid in Chlorella vulgaris. The average biomass and lipid content in outdoor conditions were found to be 0.315 g.L-1 and 20-25% respectively. The effect of magnetic flux density in the range of 600-900 mG on biomass production and lipid content was studied. A magnetic flux density of 700 mG at 1Hz for 4 h per day was found to be optimum, which yielded a maximum dry cell weight of 0.61 g.L-1, two-fold than the normal condition, with a lipid content of 55.2%. FTIR analysis evidenced that the PMF treatment increased the active oxygen, which could be attributed to the enhancement of growth and lipid of C. vulgaris.
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Affiliation(s)
- Edachery Baldev
- National Repository for Microalgae and Cyanobacteria - Freshwater (DBT, Govt. of India), Department of Microbiology Bharathidasan University, Tiruchirappalli, 620024, India.
| | - Davoodbasha MubarakAli
- National Repository for Microalgae and Cyanobacteria - Freshwater (DBT, Govt. of India), Department of Microbiology Bharathidasan University, Tiruchirappalli, 620024, India; School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, 600048, Tamil Nadu, India.
| | | | - Arivalagan Pugazhendhi
- School of Renewable Energy, Maejo University, Chiang Mai, 50290, Thailand; College of Medical and Health Science, Asia University, Taichung, Taiwan.
| | - Nooruddin Thajuddin
- National Repository for Microalgae and Cyanobacteria - Freshwater (DBT, Govt. of India), Department of Microbiology Bharathidasan University, Tiruchirappalli, 620024, India.
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10
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Static Magnetic Fields Effects on Polysaccharides Production by Different Microalgae Strains. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11115299] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Microalgae are able to produce many valuable biomolecules, such as polysaccharides, that presents a large diversity of biochemical structures and functions as antioxidant, antifungal, anticancer, among others. Static magnetic fields (SMF) influence the metabolism of microorganisms and has been shown as an alternative to increase microalgae biomass, yield and compounds production. Especially, some studies have highlighted that SMF application could enhance carbohydrate content. This study aimed to evaluate different conditions of SMF on Spirulina and Chlorella in indoor and outdoor conditions, in order to confirm the influence of SMF on polysaccharides production, evaluating which polysaccharidic fraction could be enhanced by SMF and highlighting a possible modification in EPS composition. Starch from Chlorella and exopolysaccharides (EPS) from Spirulina were quantified and characterized. SMF increased the starch content in Chorella fusca biomass. EPS productions from A. platensis and Spirulina sp. were not significantly increased, and global composition appeared similar to the controls (constituted basically of 80–86% neutral sugars and 13–19% uronic acids). However, the monosaccharide composition analysis revealed a significant modification of composition, i.e., the amount of fucose, arabinose, rhamnose, galactose and glucuronic acid was increased, while the glucose content was decreased. SMF application led to significant modification of polysaccharides production and this study demonstrate that combining the outdoor conditions with SMF, the starch content and EPS composition was positively affected.
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11
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da Costa Menestrino B, Sala L, Costa JAV, Buffon JG, Santos LO. Magnetic fields exhibit a positive impact on lipid and biomass yield during phototrophic cultivation of Spirulina sp. Bioprocess Biosyst Eng 2021; 44:2087-2097. [PMID: 34027616 DOI: 10.1007/s00449-021-02585-9] [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: 10/27/2020] [Accepted: 05/07/2021] [Indexed: 10/21/2022]
Abstract
This study aimed to investigate the effects of magnetic field (MF) application (1, 12 and 24 h day -1) to Spirulina sp. LEB 18 in different photosynthesis cycles (dark and/or light) during short (15 days) and long periods (50 days) of cultivation. MF application was performed via two sources: ferrite magnets and solenoids. At the end of cultivation, the biomass was characterized in terms of lipids, proteins, and carbohydrates. In the 15 day cultures, the highest maximum biomass concentrations (2.06 g L-1 and 1.83 g L-1) were observed when 30 mT was applied for 24 h day -1 or 12 h day -1 (on the light cycle), respectively. MF application throughout cultivation (24 h day -1) for more than 30 days is not recommended. In all conditions, there was an increase in the lipid concentration (from 14 to 45%). The protein profile suggested important changes in photosystems I and II due to MF application. Cell morphology was not altered by MF application. In conclusion, the effects on the metabolism of Spirulina sp. are directly related to the photosynthesis cycle and time period in which the MF was applied.
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Affiliation(s)
- Bruno da Costa Menestrino
- Laboratory of Biotechnology, School of Chemistry and Food, Federal University of Rio Grande, Rio Grande, Rio Grande do Sul, 96203-900, Brazil
| | - Luisa Sala
- Laboratory of Biotechnology, School of Chemistry and Food, Federal University of Rio Grande, Rio Grande, Rio Grande do Sul, 96203-900, Brazil
| | - Jorge Alberto Vieira Costa
- Laboratory of Biochemical Engineering, School of Chemistry and Food, Federal University of Rio Grande, Rio Grande, Rio Grande do Sul, 96203-900, Brazil
| | - Jaqueline Garda Buffon
- Laboratory Mycotoxins and Food Science, School of Chemistry and Food, Federal University of Rio Grande, Rio Grande, Rio Grande do Sul, 96203-900, Brazil
| | - Lucielen Oliveira Santos
- Laboratory of Biotechnology, School of Chemistry and Food, Federal University of Rio Grande, Rio Grande, Rio Grande do Sul, 96203-900, Brazil.
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12
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Deamici KM, Santos LO, Costa JAV. Magnetic field as promoter of growth in outdoor and indoor assays of Chlorella fusca. Bioprocess Biosyst Eng 2021; 44:1453-1460. [PMID: 33760985 DOI: 10.1007/s00449-021-02526-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 01/31/2021] [Indexed: 10/21/2022]
Abstract
This study aimed to evaluate the influence of a magnetic field (MF) intensity of 25 mT on Chlorella fusca cultivation in outdoor and indoor conditions, and evaluate the changes in the macromolecules, pigment content and protein profile. C. fusca was cultivated for 15 d in raceway photobioreactor. MF was applied for 24 h d-1 and 1 h d-1. In outdoor cultivation, MF applied for 24 h d-1 increased 23% in the biomass concentration, while indoor assays resulted in an increase in both modes, with biomass production increasing between 70 and 85%. Biomass composition was altered when MF was applied for 1 h d-1 in indoor assays; the highest protein content was achieved (32.7%). Nitrate consumption was higher in outdoor assays, while MF application did not alter the protein profile. The results showed that combining the outdoor conditions with MF is advantageous, as higher biomass concentration can be achieved with lower energy expenditure.
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Affiliation(s)
- Kricelle Mosquera Deamici
- Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande, Rio Grande-RS, 96203-900, Brazil
| | - Lucielen Oliveira Santos
- Laboratory of Biotechnology, College of Chemistry and Food Engineering, Federal University of Rio Grande, Rio Grande-RS, 96203-900, Brazil
| | - Jorge Alberto Vieira Costa
- Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande, Rio Grande-RS, 96203-900, Brazil.
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13
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El Zokm GM, Ismail MM, El-Said GF. Halogen content relative to the chemical and biochemical composition of fifteen marine macro and micro algae: nutritional value, energy supply, antioxidant potency, and health risk assessment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:14893-14908. [PMID: 33222067 DOI: 10.1007/s11356-020-11596-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 11/09/2020] [Indexed: 06/11/2023]
Abstract
Marine algae have made a strong contribution to global food security in the future. This study is the first report describing the concentration, pathways, and interactions of halogens in 15 species of marine algae collected from the Eastern Harbor in Alexandria, Egypt, relative to 22 key variables. The relationship between halogen content and chemical and biochemical parameters was studied through multivariate analysis. Among all the tested algae, the iodine content was the lowest (2.53-3.00 μg/g). The range of fluoride and chloride in macroalgae (1.12-1.70 and 0.10-0.46 mg/g) was smaller than that of microalgae (0.10-0.46 and 1.48-3.17 mg/g). The bromide content in macroalgae (0.36-5.45 mg/g) was higher than that in microalgae (0.40-0.76 mg/g). The halogen content in macroalgae was arranged in the order of Br > F > Cl > I. In addition, the biochemical parameters such as carbohydrates, proteins, lipids, and certain heavy metals (Fe, Zn, Cu, Mn, Pb, Ni, Co, Cd, and Cr) were determined. Calories, energy, total antioxidant activity (TAC), K/Na, and ion quotient amounts were estimated. The results showed that the green seaweed species had the highest TAC content. In most of the studied algal species, the calculated ion quotient referred to their likelihood of overcoming high blood pressure. The estimated daily intake (EDI) of algae showed no adverse effects on human health. Most of the research variables are below the acceptable WHO/FAO level. Generally, the calorie content of the selected algae is less than 2 kcal, which makes the algae considered an alternative source of healthy food to reduce obesity.Graphical abstract.
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Affiliation(s)
- Gehan M El Zokm
- National Institute of Oceanography and Fisheries (NIOF), Alexandria, Egypt
| | - Mona M Ismail
- National Institute of Oceanography and Fisheries (NIOF), Alexandria, Egypt.
| | - Ghada F El-Said
- National Institute of Oceanography and Fisheries (NIOF), Alexandria, Egypt
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14
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Lu H, Wang X, Hu S, Han T, He S, Zhang G, He M, Lin X. Bioeffect of static magnetic field on photosynthetic bacteria: Evaluation of bioresources production and wastewater treatment efficiency. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2020; 92:1131-1141. [PMID: 32056340 DOI: 10.1002/wer.1308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/31/2020] [Accepted: 02/09/2020] [Indexed: 06/10/2023]
Abstract
Photosynthetic bacteria (PSB) technology is a promising method for biomass, protein, pigments, and other value-added substances generation from wastewater. However, the above bioresources production efficiency is relatively low. In this work, a static magnetic field (SMF) was used to promote bioresources production. Results showed that SMF had positive effects on value-added substances production. With 0.35 Tesla (T) SMF, the PSB biomass, protein, carotenoids, and bacteriochlorophyll concentration were promoted by 31.1%, 22.6%, 56.7%, and 73.1% compared with the control group, respectively. Biomass yield finally reached 0.58 g biomass/g COD removal, which was promoted by 37.1%. The doubling time was shortened by 37.9% in 0.35 T group, showing that SMF can promote cell growth. With 0.35 T SMF, the intracellular NADH dehydrogenase and ATP synthase activities concentration increased by 23.4% and 29.1%, respectively, thus increased the ATP content by 38.0%. Succinic dehydrogenase activity concentration greatly increased by 609.0% at 48 hr, which potentially accelerated the tricarboxylic acid cycle and COD degradation as well as enhanced biomass production. PRACTITIONER POINTS: SMF promoted PSB bioresource production during wastewater treatment processing. Biomass, protein, carotenoids, and Bchl concentration were promoted by 31.1%, 22.6%, 56.7%, and 73.1%, respectively. PSB yield of 0.35 T group was promoted by 37.1% compared with the control group. SDH concentration of 0.35 T was promoted by 609.0% compared with the control group. Increased NADH and ATP synthase activity concentration by SMF enhanced energy metabolism.
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Affiliation(s)
- Haifeng Lu
- College of Water Resource and Civil Engineering, China Agriculture University, Beijing, China
- State Key Laboratory of Coal Resources and Safe Mining, Beijing, China
| | - Xiaodan Wang
- College of Water Resource and Civil Engineering, China Agriculture University, Beijing, China
- State Key Laboratory of Coal Resources and Safe Mining, Beijing, China
| | - Shunfan Hu
- College of Water Resource and Civil Engineering, China Agriculture University, Beijing, China
- State Key Laboratory of Coal Resources and Safe Mining, Beijing, China
| | - Ting Han
- College of Water Resource and Civil Engineering, China Agriculture University, Beijing, China
- State Key Laboratory of Coal Resources and Safe Mining, Beijing, China
| | - Shichao He
- College of Water Resource and Civil Engineering, China Agriculture University, Beijing, China
- State Key Laboratory of Coal Resources and Safe Mining, Beijing, China
| | - Guangming Zhang
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China
| | - Mou He
- College of Water Resource and Civil Engineering, China Agriculture University, Beijing, China
- State Key Laboratory of Coal Resources and Safe Mining, Beijing, China
| | - Xinyu Lin
- College of Water Resource and Civil Engineering, China Agriculture University, Beijing, China
- State Key Laboratory of Coal Resources and Safe Mining, Beijing, China
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15
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Magnetic fields: biomass potential of Spirulina sp. for food supplement. Bioprocess Biosyst Eng 2020; 43:1231-1240. [DOI: 10.1007/s00449-020-02318-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 02/23/2020] [Indexed: 12/13/2022]
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16
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Deamici KM, Cuellar-Bermudez SP, Muylaert K, Santos LO, Costa JAV. Quantum yield alterations due to the static magnetic fields action on Arthrospira platensis SAG 21.99: Evaluation of photosystem activity. BIORESOURCE TECHNOLOGY 2019; 292:121945. [PMID: 31404753 DOI: 10.1016/j.biortech.2019.121945] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/30/2019] [Accepted: 07/31/2019] [Indexed: 06/10/2023]
Abstract
Static magnetic fields (SMF) influence the metabolism of microorganisms, however, there is no knowledge explaining how SMF act in cells. This study aimed at evaluating the SMF (30 mT) effect on photosynthetic performance, growth and biomass composition of the cyanobacterium Arthrospira platensis SAG 21.99. A. platensis was cultivated under 30 mT applied for 1 h d-1 and 24 h for 10 d in glass bottles. SMF in both conditions increased cellular growth, achieving a 30% higher biomass concentration. SMF applied for 1 h d-1 increased the pigments and carbohydrate content. The quantum yield was used as an indicator of the photosystem II (PSII) activity and was shown to have been positively affected. SMF for 1 h d-1 had a significant effect on the OJIP curves. This is the first study that evaluated the photosynthetic activity in cyanobacteria cultures under SMF action.
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Affiliation(s)
- Kricelle Mosquera Deamici
- Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande, 96203-900 Rio Grande, RS, Brazil
| | | | - Koenraad Muylaert
- Laboratory Aquatic Biology, KU Leuven Kulak, E. Sabbelaan 53, Kortrijk, Belgium
| | - Lucielen Oliveira Santos
- Laboratory of Biotechnology, College of Chemistry and Food Engineering, Federal University of Rio Grande, 96203-900 Rio Grande, RS, Brazil
| | - Jorge Alberto Vieira Costa
- Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande, 96203-900 Rio Grande, RS, Brazil.
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17
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Susanna D, Dhanapal R, Mahalingam R, Ramamurthy V. Increasing productivity of
Spirulina platensis
in photobioreactors using artificial neural network modeling. Biotechnol Bioeng 2019; 116:2960-2970. [DOI: 10.1002/bit.27128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/11/2019] [Accepted: 07/19/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Deepti Susanna
- Department of BiotechnologyPSG College of Technology Coimbatore India
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18
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Deamici KM, Santos LO, Costa JAV. Use of static magnetic fields to increase CO 2 biofixation by the microalga Chlorella fusca. BIORESOURCE TECHNOLOGY 2019; 276:103-109. [PMID: 30612030 DOI: 10.1016/j.biortech.2018.12.080] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 12/21/2018] [Accepted: 12/23/2018] [Indexed: 06/09/2023]
Abstract
This study aimed to use different conditions of magnetic field (MF) application during Chlorella fusca cultivation and evaluate CO2 biofixation by the microalga through growth kinetics in addition to the biomass composition. For this purpose, we tested different MF intensities applied for 1 h d-1 and for 24 h. Cultures exposed to the MF for 1 h d-1 (in both intensities) had greater biomass concentrations (1.42 g L-1) and 34% more productivity in the same time as the control assay. The biofixation rate increased by 50% with 60 mT for 1 h d-1, and the protein content was enhanced by 30 mT (56.21% w w-1). This study was the first to consider the MF effect on CO2 biofixation. MF applied for 1 h d-1 proved to be an efficient alternative method to increase the CO2 biofixation and growth of C. fusca besides to be an inexpensive and nontoxic method.
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Affiliation(s)
- Kricelle Mosquera Deamici
- Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande, 96203-900 Rio Grande-RS, Brazil
| | - Lucielen Oliveira Santos
- Laboratory of Biotechnology, College of Chemistry and Food Engineering, Federal University of Rio Grande, 96203-900 Rio Grande-RS, Brazil
| | - Jorge Alberto Vieira Costa
- Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande, 96203-900 Rio Grande-RS, Brazil.
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19
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Shao W, Ebaid R, Abomohra AEF, Shahen M. Enhancement of Spirulina biomass production and cadmium biosorption using combined static magnetic field. BIORESOURCE TECHNOLOGY 2018; 265:163-169. [PMID: 29890441 DOI: 10.1016/j.biortech.2018.06.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/04/2018] [Accepted: 06/05/2018] [Indexed: 05/16/2023]
Abstract
The effect of static magnetic field (SMF) on Spirulina platensis growth and its influence on cadmium ions (Cd2+) removal efficiency were studied. Application of 6 h day-1 SMF resulted in the highest significant biomass productivity of 0.198 g L-1 day-1. However, 10 and 15 mg L-1 of Cd2+ resulted in significant reduction in biomass productivity by 8.8 and 12.5%, respectively, below the control. Combined SMF showed 30.1% significant increase in biomass productivity over the control. On the other hand, increase of initial Cd2+ concentration resulted in significant reduction of Cd2+ removal efficiency, representing 79.7% and 61.5% at 10 and 15 mg L-1, respectively, after 16 days. Interestingly, application of SMF for 6 h day-1 enhanced Cd2+ removal efficiency counted by 91.4% and 82.3% after 20 days for cultures with initial Cd2+ concentration of 10 and 15 mg L-1, representing increase by 6.3 and 25.3%, respectively, over the SMF-untreated cultures.
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Affiliation(s)
- Weilan Shao
- School of the Environment and Safety Engineering, Jiangsu University, 212013 Jiangsu, China
| | - Reham Ebaid
- School of the Environment and Safety Engineering, Jiangsu University, 212013 Jiangsu, China
| | - Abd El-Fatah Abomohra
- School of Energy and Power Engineering, Jiangsu University, 212013 Jiangsu, China; Faculty of Science, Tanta University, 31527 Tanta, Egypt.
| | - Mohamed Shahen
- Faculty of Science, Tanta University, 31527 Tanta, Egypt; College of Life Science, Northwest A & F University, Yangling, Shaanxi 712100, China
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20
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Deamici KM, Santos LO, Costa JAV. Magnetic field action on outdoor and indoor cultures of Spirulina: Evaluation of growth, medium consumption and protein profile. BIORESOURCE TECHNOLOGY 2018; 249:168-174. [PMID: 29040851 DOI: 10.1016/j.biortech.2017.09.185] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 09/25/2017] [Accepted: 09/26/2017] [Indexed: 06/07/2023]
Abstract
This study aimed at evaluating whether a magnetic field (MF) affects the growth of Spirulina sp. when applied to it at different exposure times in indoor and outdoor culture systems. The effects of MF on chlorophyll content, medium consumption and protein profile were also investigated. In raceway tanks, a 25 mT MF was applied for 24 h or for 1 h d-1. MF for 24 h to outdoor assays increased biomass concentration and chlorophyll-a content besides altering the protein profile. Outdoor Spirulina growth was higher (∼3.65 g L-1) than the growth found in indoor assays (∼1.80 g L-1), while nitrogen and phosphorus consumption was not enhanced by the application of MF. This is the first study that investigated the influence of MF on outdoor microalga assays, and the results showed that MF affected the metabolism of Spirulina cultured in raceways, especially when it was grown outdoors in uncontrolled environmental conditions.
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Affiliation(s)
- Kricelle Mosquera Deamici
- Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande, 96203-900 Rio Grande, RS, Brazil
| | - Lucielen Oliveira Santos
- Laboratory of Biotechnology, College of Chemistry and Food Engineering, Federal University of Rio Grande, 96203-900 Rio Grande, RS, Brazil
| | - Jorge Alberto Vieira Costa
- Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande, 96203-900 Rio Grande, RS, Brazil.
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21
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Santos LO, Deamici KM, Menestrino BC, Garda-Buffon J, Costa JAV. Magnetic treatment of microalgae for enhanced product formation. World J Microbiol Biotechnol 2017; 33:169. [PMID: 28831658 DOI: 10.1007/s11274-017-2332-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 08/10/2017] [Indexed: 02/03/2023]
Abstract
Static or modulated magnetic fields (MF) may interact with the biological system and affect the metabolism of microorganisms, such as their photosynthetic capacity or synthesis of carbohydrates. Their effects on microorganisms, which can be classified into inhibiting, stimulating and null, may be interpreted as the result of stress that cells undergo, thus, leading to responses through the same mechanisms. Biological effects of exposure to magnetic forces depend on magnetic intensity, frequency and exposure time. Modifications in these parameters may enhance product formation. Effects differ according to the form and application of MF characteristic parameters. Magnetic treatments have the advantages of being convenient and non-toxic, having low running cost, emitting no secondary pollution, enabling wide application and being easily shielded. MF application to the cultivation of microalgae, to improve the production of finished biomolecules, is a simple, inexpensive and powerful process. However, bioeffects of MF on microalgae need to be further investigated because there have currently been very few available reports in the literature. Thus, studies which aim at optimizing parameters involved in MF application must be developed in order to obtain the best conditions for the production of molecules with high economic potential.
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Affiliation(s)
- Lucielen Oliveira Santos
- Laboratory of Biotechnology, Chemistry and Food School, Federal University of Rio Grande, Rio Grande, RS, Brazil.
| | - Kricelle Mosquera Deamici
- Laboratory of Biochemical Engineering, Chemistry and Food School, Federal University of Rio Grande, Rio Grande, RS, Brazil
| | - Bruno Costa Menestrino
- Laboratory of Biotechnology, Chemistry and Food School, Federal University of Rio Grande, Rio Grande, RS, Brazil
| | - Jaqueline Garda-Buffon
- Laboratory of Mycotoxin and Food Science, Chemistry and Food School, Federal University of Rio Grande, Rio Grande, RS, Brazil
| | - Jorge Alberto Vieira Costa
- Laboratory of Biochemical Engineering, Chemistry and Food School, Federal University of Rio Grande, Rio Grande, RS, Brazil
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22
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Deamici KM, Costa JAV, Santos LO. Magnetic fields as triggers of microalga growth: evaluation of its effect on Spirulina sp. BIORESOURCE TECHNOLOGY 2016; 220:62-67. [PMID: 27566513 DOI: 10.1016/j.biortech.2016.08.038] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 08/07/2016] [Accepted: 08/10/2016] [Indexed: 06/06/2023]
Abstract
This study aimed at evaluating the influence of magnetic field on the growth and biomass composition of Spirulina sp., cultivated in vertical tubular photobioreactors. Magnetic fields of 5, 30 and 60mT generated by electric current and ferrite magnets were applied at different lengths of time. The magnetic field of 30 and 60mT for 1hd(-1) stimulated the growth, thus leading to higher biomass concentration by comparison with the control culture. Increase in productivity, protein and carbohydrate contents were 105.1% (60mT for 1hd(-1)), 16.6% (60mT for 24hd(-1)) and 133.2% (30mT for 24hd(-1)), respectively. These values were higher than the ones of the control. Results showed that magnetic field may influence the growth of Spirulina sp., since it triggers a stimulating effect and can leads to twofold biomass concentration in equal cultivation time periods.
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Affiliation(s)
- Kricelle Mosquera Deamici
- Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande, 96203-900 Rio Grande, RS, Brazil
| | - Jorge Alberto Vieira Costa
- Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande, 96203-900 Rio Grande, RS, Brazil
| | - Lucielen Oliveira Santos
- Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande, 96203-900 Rio Grande, RS, Brazil.
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23
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Benavente-Valdés JR, Aguilar C, Contreras-Esquivel JC, Méndez-Zavala A, Montañez J. Strategies to enhance the production of photosynthetic pigments and lipids in chlorophycae species. ACTA ACUST UNITED AC 2016; 10:117-125. [PMID: 28352532 PMCID: PMC5040869 DOI: 10.1016/j.btre.2016.04.001] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 03/16/2016] [Accepted: 04/02/2016] [Indexed: 11/25/2022]
Abstract
Microalgae are source of valuable compounds as lipids, proteins, carbohydrates, pigments among others. Culture stress conditions increase biomass and high values compounds in microalgae. Nitrogen and salt stress increase lipids in microalgae. Two stages culture and electromagnetic fields enhancing microalgae biomass and pigments content.
Microalgae are a major natural source for a vast array of valuable compounds as lipids, proteins, carbohydrates, pigments among others. Despite many applications, only a few species of microalgae are cultured commercially because of poorly developed of cultivation process. Nowadays some strategies of culture have been used for enhancing biomass and value compounds yield. The most strategies applied to microalgae are classified into two groups: nutrimental and physical. The nutrimental are considered as change in media composition as nitrogen and phosphorous limitation and changes in carbon source, while physical are described as manipulation in operational conditions and external factors such as application of high-light intensities, medium salinity and electromagnetic fields. The exposition to electromagnetic field is a promising technique that can improve the pigments and biomass yield in microalgae culture. Therefore, is important to describe the advantages and applications of the overall process. The aim of this review was to describe the main culture strategies used to improve the photosynthetic and lipids content in chlorophyceae species.
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Affiliation(s)
- Juan Roberto Benavente-Valdés
- Department of Food Research, Universidad Autónoma de Coahuila, Universidad Autónoma de Coahuila, Saltillo, Coahuila, Mexico
| | - Cristóbal Aguilar
- Department of Food Research, Universidad Autónoma de Coahuila, Universidad Autónoma de Coahuila, Saltillo, Coahuila, Mexico
| | - Juan Carlos Contreras-Esquivel
- Department of Food Research, Universidad Autónoma de Coahuila, Universidad Autónoma de Coahuila, Saltillo, Coahuila, Mexico
| | - Alejandro Méndez-Zavala
- Department of Chemical Engineering, Universidad Autónoma de Coahuila, Universidad Autónoma de Coahuila, Saltillo, Coahuila, Mexico
| | - Julio Montañez
- Department of Chemical Engineering, Universidad Autónoma de Coahuila, Universidad Autónoma de Coahuila, Saltillo, Coahuila, Mexico
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24
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Tu R, Jin W, Xi T, Yang Q, Han SF, Abomohra AEF. Effect of static magnetic field on the oxygen production of Scenedesmus obliquus cultivated in municipal wastewater. WATER RESEARCH 2015; 86:132-138. [PMID: 26253865 DOI: 10.1016/j.watres.2015.07.039] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 07/11/2015] [Accepted: 07/21/2015] [Indexed: 06/04/2023]
Abstract
Algal-bacterial symbiotic system, with biological synergism of physiological functions of both algae and bacteria, has been proposed for cultivation of microalgae in municipal wastewater for biomass production and wastewater treatment. The algal-bacterial symbiotic system can enhance dissolved oxygen production which enhances bacterial growth and catabolism of pollutants in wastewater. Therefore, the oxygen production efficiency of microalgae in algal-bacterial systems is considered as the key factor influencing the wastewater treatment efficiency. In the present study, we have proposed a novel approach which uses static magnetic field to enhance algal growth and oxygen production rate with low operational cost and non-toxic secondary pollution. The performance of oxygen production with the magnetic field was evaluated using Scenedesmus obliquus grown in municipal wastewater and was calculated based on the change in dissolved oxygen concentration. Results indicated that magnetic treatment stimulates both algal growth and oxygen production. Application of 1000 GS of magnetic field once at logarithmic growth phase for 0.5 h increased the chlorophyll-a content by 11.5% over the control after 6 days of growth. In addition, magnetization enhanced the oxygen production rate by 24.6% over the control. Results of the study confirmed that application of a proper magnetic field could reduce the energy consumption required for aeration during the degradation of organic matter in municipal wastewater in algal-bacterial symbiotic systems.
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Affiliation(s)
- Renjie Tu
- Harbin Institute of Technology, Shenzhen Graduate School, 518055 Shenzhen, China
| | - Wenbiao Jin
- Harbin Institute of Technology, Shenzhen Graduate School, 518055 Shenzhen, China.
| | - Tingting Xi
- Harbin Institute of Technology, Shenzhen Graduate School, 518055 Shenzhen, China
| | - Qian Yang
- Harbin Institute of Technology, Shenzhen Graduate School, 518055 Shenzhen, China
| | - Song-Fang Han
- Harbin Institute of Technology, Shenzhen Graduate School, 518055 Shenzhen, China
| | - Abd El-Fatah Abomohra
- Harbin Institute of Technology, Shenzhen Graduate School, 518055 Shenzhen, China; Botany Department, Faculty of Science, Tanta University, 31527 Tanta, Egypt
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25
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Yousif A, Zhang J, Mulcahy F, Singh OV. Bio-economics of melanin biosynthesis using electromagnetic field resistant Streptomyces sp.-EF1 isolated from cave soil. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-014-0996-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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26
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Gemishev O, Dimova P, Panova N, Evstatieva Y. Effect of Static Magnetic Field on Synthesis of Endoglucanase by Trichoderma Reesei—M7. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2009.10818555] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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27
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Pérez H, Cordova-Fraga T, López-Briones S, Martínez-Espinosa JC, Rosas EF, Espinoza A, Villagómez-Castro JC, Sosa M, Topsu S, Bernal-Alvarado JJ. Portable device for magnetic stimulation: assessment survival and proliferation in human lymphocytes. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2013; 84:094701. [PMID: 24089844 DOI: 10.1063/1.4819796] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A device's instrumentation for magnetic stimulation on human lymphocytes is presented. This is a new procedure to stimulate growing cells with ferrofluid in vortices of magnetic field. The stimulation of magnetic vortices was provided at five different frequencies, from 100 to 2500 Hz and intensities from 1.13 to 4.13 mT. To improve the stimulation effects, a paramagnetic ferrofluid was added on the cell culture medium. The results suggest that the frequency changes and the magnetic field variation produce an important increase in the number of proliferating cells as well as in the cellular viability. This new magnetic stimulation modality could trigger an intracellular mechanism to induce cell proliferation and cellular survival only on mitogen stimulated cells.
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Affiliation(s)
- H Pérez
- Department of Physical Engineering - DCI, Universidad de Guanajuato campus León, Loma del Bosque 103, Lomas del Campestre, 37150 León, GTO, Mexico
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28
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Zaidi NS, Sohaili J, Muda K, Sillanpää M. Magnetic Field Application and its Potential in Water and Wastewater Treatment Systems. SEPARATION AND PURIFICATION REVIEWS 2013. [DOI: 10.1080/15422119.2013.794148] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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Tabernero A, Martín del Valle EM, Galan MA. Microalgae Technology: A Patent Survey. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2013. [DOI: 10.1515/ijcre-2012-0043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
For a long time now, it is known that an infinite number of compounds can be obtained from microalgae due to their promising composition. This fact is used by several companies to produce at medium-scale different high value products such as carotenoids. Furthermore, this last decade research in this topic has significantly increased given the potential solution these microorganisms present to meet World environmental agreements regarding CO2 emissions. However, the culture of large-scale microalgae in order to obtain products which are required in huge quantities (e.g., oil for manufacturing biodiesel) and at the same time removing pollutants appeared as a difficult task due to the great number of variables that must be taken into account. The photobioreactor design for cultivating the microalgae is perhaps the most important task, but there are other bottle-necks, such as the harvesting system, cleaning system, control system, the chosen microalgae, and the extraction of products from the microalgae. This review focuses on around 200 patents covering microalgae technology, from different photobioreactors designs to microalgae applications, in order to construct a perfect large-scale facility removing CO2 in the process.
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30
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Sharon Mano Pappu J, Vijayakumar GK, Ramamurthy V. Artificial neural network model for predicting production of Spirulina platensis in outdoor culture. BIORESOURCE TECHNOLOGY 2013; 130:224-230. [PMID: 23313667 DOI: 10.1016/j.biortech.2012.12.082] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 12/11/2012] [Accepted: 12/12/2012] [Indexed: 06/01/2023]
Abstract
Process variables contributing to describe the growth of Spirulina platensis in outdoor cultures were evaluated. Mathematical models of the process using inputs which were simple and easy to collect in any operating plant were developed. Multiple linear regression (MLR) and artificial neural network (ANN) modelling procedures were evaluated. The dataset contributing to the growth prediction model were biomass concentration, nitrate concentration, pH and dissolved oxygen concentration of culture fluid, light intensity and days in culture, measured once a day. Datasets of 12days were sufficient to develop a model to predict the succeeding day's biomass concentration with a coefficient of determination of greater than 0.98 under outdoor growth conditions. Insufficient number of datasets resulted in overestimation of the predicted output value.
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Affiliation(s)
- J Sharon Mano Pappu
- Department of Biotechnology, PSG College of Technology, Coimbatore 640004, India
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31
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Taskin M, Esim N, Genisel M, Ortucu S, Hasenekoglu I, Canli O, Erdal S. ENHANCEMENT OF INVERTASE PRODUCTION BYAspergillus nigerOZ-3 USING LOW-INTENSITY STATIC MAGNETIC FIELDS. Prep Biochem Biotechnol 2013; 43:177-88. [DOI: 10.1080/10826068.2012.713431] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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32
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Wan TJ, Shen SM, Bandyopadhyay A, Shu CM. Bibliometric analysis of carbon dioxide reduction research trends during 1999–2009. Sep Purif Technol 2012. [DOI: 10.1016/j.seppur.2011.07.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Small DP, Hüner NPA, Wan W. Effect of static magnetic fields on the growth, photosynthesis and ultrastructure of Chlorella kessleri microalgae. Bioelectromagnetics 2011; 33:298-308. [PMID: 21953117 DOI: 10.1002/bem.20706] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Accepted: 08/31/2011] [Indexed: 11/09/2022]
Abstract
Microalgal biotechnology could generate substantial amounts of biofuels with minimal environmental impact if the economics can be improved by increasing the rate of biomass production. Chlorella kessleri was grown in a small-scale raceway pond and in flask cultures with the entire volume, 1% (v/v) at any instant, periodically exposed to static magnetic fields to demonstrate increased biomass production and investigate physiological changes, respectively. The growth rate in flasks was maximal at a field strength of 10 mT, increasing from 0.39 ± 0.06 per day for the control to 0.88 ± 0.06 per day. In the raceway pond the 10 mT field increased the growth rate from 0.24 ± 0.03 to 0.45 ± 0.05 per day, final biomass from 0.88 ± 0.11 to 1.56 ± 0.18 g/L per day, and maximum biomass production from 0.11 ± 0.02 to 0.38 ± 0.04 g/L per day. Increased pigment, protein, Ca, and Zn content made the biomass produced with magnetic stimulation nutritionally superior. An increase in oxidative stress was measured indirectly as a decrease in antioxidant capacity from 26 ± 2 to 17 ± 1 µmol antioxidant/g biomass. Net photosynthetic capacity (NPC) and respiratory rate were increased by factors of 2.1 and 3.1, respectively. Loss of NPC enhancement after the removal of magnetic field fit a first-order model well (R(2) = 0.99) with a half-life of 3.3 days. Transmission electron microscopy showed enlarged chloroplasts and decreased thylakoid order with 10 mT treatment. By increasing daily biomass production about fourfold, 10 mT magnetic field exposure could make algal oil cost competitive with other biodiesel feedstocks.
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Affiliation(s)
- Darcy P Small
- Department of Chemical and Biochemical Engineering, University of Western Ontario, London, ON, Canada
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34
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Santos LO, Alegre RM, Garcia-Diego C, Cuellar J. Effects of magnetic fields on biomass and glutathione production by the yeast Saccharomyces cerevisiae. Process Biochem 2010. [DOI: 10.1016/j.procbio.2010.05.008] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hristov J. Magnetic field assisted fluidization – a unified approach. Part 8. Mass transfer: magnetically assisted bioprocesses. REV CHEM ENG 2010. [DOI: 10.1515/revce.2010.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Hunt RW, Zavalin A, Bhatnagar A, Chinnasamy S, Das KC. Electromagnetic biostimulation of living cultures for biotechnology, biofuel and bioenergy applications. Int J Mol Sci 2009; 10:4515-4558. [PMID: 20057958 PMCID: PMC2790121 DOI: 10.3390/ijms10104515] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2009] [Revised: 09/17/2009] [Accepted: 10/19/2009] [Indexed: 11/16/2022] Open
Abstract
The surge of interest in bioenergy has been marked with increasing efforts in research and development to identify new sources of biomass and to incorporate cutting-edge biotechnology to improve efficiency and increase yields. It is evident that various microorganisms will play an integral role in the development of this newly emerging industry, such as yeast for ethanol and Escherichia coli for fine chemical fermentation. However, it appears that microalgae have become the most promising prospect for biomass production due to their ability to grow fast, produce large quantities of lipids, carbohydrates and proteins, thrive in poor quality waters, sequester and recycle carbon dioxide from industrial flue gases and remove pollutants from industrial, agricultural and municipal wastewaters. In an attempt to better understand and manipulate microorganisms for optimum production capacity, many researchers have investigated alternative methods for stimulating their growth and metabolic behavior. One such novel approach is the use of electromagnetic fields for the stimulation of growth and metabolic cascades and controlling biochemical pathways. An effort has been made in this review to consolidate the information on the current status of biostimulation research to enhance microbial growth and metabolism using electromagnetic fields. It summarizes information on the biostimulatory effects on growth and other biological processes to obtain insight regarding factors and dosages that lead to the stimulation and also what kind of processes have been reportedly affected. Diverse mechanistic theories and explanations for biological effects of electromagnetic fields on intra and extracellular environment have been discussed. The foundations of biophysical interactions such as bioelectromagnetic and biophotonic communication and organization within living systems are expounded with special consideration for spatiotemporal aspects of electromagnetic topology, leading to the potential of multipolar electromagnetic systems. The future direction for the use of biostimulation using bioelectromagnetic, biophotonic and electrochemical methods have been proposed for biotechnology industries in general with emphasis on an holistic biofuel system encompassing production of algal biomass, its processing and conversion to biofuel.
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Affiliation(s)
- Ryan W. Hunt
- Department of Biological and Agricultural Engineering, The University of Georgia, Athens, GA 30602, USA; E-Mails:
(A.B.);
(S.C.);
(K.C.D.)
- Author to whom correspondence should be addressed; E-Mail:
(R.W.H.); Tel.: +1-706-227-7147; Fax: +1-706-542-8806
| | - Andrey Zavalin
- Mass Spectrometry Research Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA; E-Mail:
(A.Z.)
| | - Ashish Bhatnagar
- Department of Biological and Agricultural Engineering, The University of Georgia, Athens, GA 30602, USA; E-Mails:
(A.B.);
(S.C.);
(K.C.D.)
| | - Senthil Chinnasamy
- Department of Biological and Agricultural Engineering, The University of Georgia, Athens, GA 30602, USA; E-Mails:
(A.B.);
(S.C.);
(K.C.D.)
| | - Keshav C. Das
- Department of Biological and Agricultural Engineering, The University of Georgia, Athens, GA 30602, USA; E-Mails:
(A.B.);
(S.C.);
(K.C.D.)
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Voltarelli FA, de Mello MAR. Spirulina enhanced the skeletal muscle protein in growing rats. Eur J Nutr 2008; 47:393-400. [PMID: 18807105 DOI: 10.1007/s00394-008-0740-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2007] [Accepted: 09/09/2008] [Indexed: 12/24/2022]
Abstract
UNLABELLED BACKGROUND/AIM OF THE STUDY: This study evaluates the effects of the blue green alga spirulina as the sole dietary source of protein on muscle protein in weaning rats. METHODS Young (30 days) Wistar rats were fed, during 60 days, with 17% protein spirulina (S) and compared to rats fed 17% protein casein (C). We evaluated the muscle total protein and DNA contents and the in vitro protein synthesis and degradation rates as well the myosin protein expression. RESULTS The groups presented similar body weight (C = 427.3 +/- 8.6; S = 434.6 +/- 7.7 g) and length (C = 25.4 +/- 0.2; S = 25.6 +/- 0.2 cm). Soleus muscle total protein (C = 2.9 +/- 0.1; S = 2.7 +/- 0.1 mg/100 mg) and DNA (C = 0.084 +/- 0.005; S = 0.074 +/- 0.005 mg/100 mg) contents were also similar in both groups. Protein degradation (C = 427.5 +/- 40.6; S = 476.7 +/- 50.5 pmol/mg(-1) h(-1)) did not differ between the groups but protein synthesis (C = 17.5 +/- 1.0; S = 25.2 +/- 1.9 pmol/mg(-1) h(-1)) and myosin content (western blot analyses) were higher (P < 0.05, t test) in spirulina group. CONCLUSIONS Although the spirulina proved adequate protein quality to maintain body growth, the muscle protein synthesis rates were increased by the ingestion of the experimental diet in young rats.
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Affiliation(s)
- Fabrício A Voltarelli
- Dept. of Physical Education, UNESP-São Paulo State University, 24-A Avenue, number 1515-District: Bela Vista, 13506-900, Rio Claro, SP, Brazil.
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Chen H, Li X. Effect of static magnetic field on synthesis of polyhydroxyalkanoates from different short-chain fatty acids by activated sludge. BIORESOURCE TECHNOLOGY 2008; 99:5538-5544. [PMID: 18068360 DOI: 10.1016/j.biortech.2007.10.047] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2007] [Revised: 10/29/2007] [Accepted: 10/29/2007] [Indexed: 05/25/2023]
Abstract
The effect of static magnetic field on the production of polyhydroxyalkanoates (PHAs) from different short-chain fatty acids by activated sludge process under aerobic dynamic feeding (ADF) technique was evaluated in four sequencing batch reactors (SBRs) with static magnetic field intensity of 42 mT (SBR1), 21 mT (SBR2), 7 mT (SBR3), 0 mT (SBR4), respectively. It was demonstrated that the static magnetic exposure had definitely influenced the biosynthesis of PHAs when acetate, butyrate and propionate were fed solely or each two mixture or three substrates mixture, and the effect was dependent on field strength: the maximum poly-3-hydroxybutyrate (PHB) production occurring at 7 mT, and the minimum one at 42 mT; the maximum poly-3-hydroxyvalerate (PHV) production occurring at 21 mT, and the minimum one at 0 mT.
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Affiliation(s)
- Hong Chen
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310027, China.
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