Utilization of sea water–urea as a culture medium for <i>Spirulina maxima</i>

Faucher, Onil; Coupal, Bernard; LeDuy, Anh

doi:10.1139/m79-109

Cited by 38 publications

(16 citation statements)

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“…The P88 strain did not show significantly differences in the treatments in relation to the white (P > 0.05). Similar results were gotten by Faucher et al (1979) and Mary Leema et al (2010) who have reported growing rates comparable or superior to the white medium or control (standard mineral medium) for A. platensis maximum growth in sea water supplemented with phosphorus and nitrate and addition to the A. platensis have shown that external concentrations of sea salt of up to 150% in seawater had little effect on the A. platensis strain growth (Warr et al 1985). According to these researchers the capacity of A. platensis to tolerate high salinity levels seems to be an important factor that allows it to survive and to grow in lakes and other similar alkaline brackish water.…”

supporting

confidence: 84%

Selection of Arthrospira platensis strains with productivity in brackish water with high boron levels for commercial production in the Lluta Valley

Oxa¹,

Bastías²,

Uribe³

2012

Electron. J. Biotechnol.

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Adaptation and selection of Arthrospira platensis strains, for cultivation in brackish water with excess boron (B) in the Lluta Valley can become an interesting alternative that would allow to extend these cultures to areas that possess the environmental conditions, but that lack the fresh water needed to do it. Strains TX98 and P88 were evaluated in laboratory conditions with three different media of brackish water and with the white medium, the Zarrouk modified medium (MZM). The growing media with brackish water with a B concentration present in the Lluta River of 20 mgL -1 (B20) and medium with 30 mgL -1 (B30), and 10 mg L -1 of B (B10). The effect of the different media on the growing parameters with a culture temperature of 25 ± 1ºC in the three treatments, strains TX98 and P88 triplicate, Arthrospira platensis, showed tolerance. It was statistically determined that in the growth, the two strains, the three treatments and in the interrelation of both there were significant differences (p < 0.05). The TX98 strain reached a concentration of 1.139 g L -1 (dry weight) in brackish water with medium B20. Therefore, the highest rate of specific growth (μmax) was obtained with the TX98 strain grown in the brackish medium B30 and the lowest duplication time (0.597 days). Cells grown in brackish water with B had a slightly biochemically modified composition with the white, in relation to the protein content, in the cases in which there are differences in the B content, specifically B30 treatment. For the culture with brackish water from the Lluta River, the TX98 strain is recommended with 10 mg of B using a laboratory to pilot scale.

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confidence: 84%

Selection of Arthrospira platensis strains with productivity in brackish water with high boron levels for commercial production in the Lluta Valley

Oxa¹,

Bastías²,

Uribe³

2012

Electron. J. Biotechnol.

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“…Considering the nutritive value of Spirulina and the obvious ease of its harvesting, the alga has been the subject of a number of mass culture studies in several countries 8,11,12,16,18,21,22,25,26. At present, an industrial pilot plant in Mexico produces one ton of S. maxima biomass per day 13.…”

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confidence: 99%

Cultivation ofSpirulina in sewage for poultry feed

et al. 1983

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Summary.A method for cultivating Spirulina platensis in domestic raw sewage, coupled with pisciculture and water reclamation in an integrated recycling system, has been standardized. The alga is grown in an indigenously designed open-air pilot production unit consisting of 4 concrete basins with a total surface area of 450 m 2. The harvesting and processing methods are based on simple filtration and sun drying. Extensive bench and field experiments have made it possible to produce pure blooms of African Spirulina in sewage, using sodium bicarbonate and nitrate, and employing a fertilizing schedule which replenishes nitrogen withdrawn from the medium by the alga. Although urea and several ammoniacal nitrogen sources have been tried, the best source of protein-inducing nitrogen for mass cultivation of Spirulina appears to be nitric nitrogen.Maximum long-term yields of 7.3-9.5 g m-2day -1 have been attained during the summer months, but they decrease to about 5 g m-Zday -1 during the winter.The chemical analysis of sewage-grown Spirulina revealed a high content of protein (50-55%) with a well-balanced amino acid spectrum, moderate quantities of carbohydrates and lipids, considerable amounts of pigments and low amounts of nucleic acids, nitrite and nitrosamines. Microbiological analysis of the product has shown that the flora consists mainly of gram-positive, sporeforming bacilli and faecal streptococci; occasionally very low numbers of coliforms are detected. Pathogens, such as Salmonella, Shigella and Vibrio are absent. The material has also been found to be free from pathogenic amoebae, enteroviruses and worm cysts. The results of the chick-feeding tests demonstrate that Spirulina protein can totally replace groundnut cake, the chief source of vegetable protein supplement in starter poultry feeds. In laying hens the alga shows better pigmentation effect on egg yolks than conventional oxycarotenoid sources and can be used as the sole pigmenter to obtain adequately colored yolks for table use or for the bakery industry. The diluted effluent is fed at various flow rates into a 260 m 2 fish pond in which attempts are being made to rear valuable carp. The water from the fish pond shows moderate amounts of dissolved solids and low values of sodium adsorption ratio and can, therefore, be safely utilized for irrigation purposes.

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“…In addition, large‐scale production of microalgae was realized in open‐pond system on earth, promoting the use of microalgae in industry . Importantly, researchers tried to replace artificial medium by seawater or waste stream, thus, extending the use of microalgae from air revitalization and food supply to wastes remediation 1980s: Advanced bioreactors for algae cultivation A variety of closed photobioreactors, which can regulate the mixing speed, temperature, and gas concentration, were designed and used for microalgae production .…”

Section: Development Paths Of Microalgae‐based Blssmentioning

confidence: 99%

Microalgae biotechnology as an attempt for bioregenerative life support systems: problems and prospects

Yang

Liu

et al. 2019

J of Chemical Tech & Biotech

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Bioregenerative life support system (BLSS) plays a key role in the long‐duration manned space mission. Microalgae‐based BLSS was proposed decades ago but it had a variety of technical problems hindering its application in space mission. However, in recent years, a lot of effort has been devoted to this field and great progresses have been achieved in the research of microalgae‐based BLSS. Therefore, the main aim of this work is to summarize the previous progress and find the challenges faced by microalgae‐based BLSS technology. In this regard, this works introduces the concept of microalgae‐based BLSS and presents its development paths in the past decades. Additionally, technology updates in the aspects of microalgae‐based oxygen generation, value‐added biomass production as food alternative, and wastes treatment by microalgae are summarized. Challenges faced by microalgae‐based BLSS and potential solutions are discussed. This work provides a deep understanding of microalgae‐based BLSS and that it would be beneficial for promoting implementation of this novel technology in manned space missions. © 2019 Society of Chemical Industry

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Utilization of sea water–urea as a culture medium for Spirulina maxima

Cited by 38 publications

References 0 publications

Selection of Arthrospira platensis strains with productivity in brackish water with high boron levels for commercial production in the Lluta Valley

Selection of Arthrospira platensis strains with productivity in brackish water with high boron levels for commercial production in the Lluta Valley

Cultivation ofSpirulina in sewage for poultry feed

Microalgae biotechnology as an attempt for bioregenerative life support systems: problems and prospects

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