Repeated fed-batch cultivation of Arthrospira (Spirulina) platensis using urea as nitrogen source

Matsudo, Marcelo Chuei; Bezerra, Raquel Pedrosa; Sato, Sunao; Perego, Patrizia; Converti, Attílio; Carvalho, João Carlos Monteiro de

doi:10.1016/j.bej.2008.08.009

Cited by 87 publications

(72 citation statements)

References 27 publications

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“…Urea is considered a good choice for large-scale production because of its low cost (Matsudo et al, 2009). Moreover, this crystalline compound helps fight pollution (e.g., protozoa and other microorganisms) and is often used in outdoor cultivation Xia et al, 2013;Yang et al, 2014).…”

Section: Optimization Of Urea Concentrations Outdoorsmentioning

confidence: 99%

Sufficient utilization of natural fluctuating light intensity is an effective approach of promoting lipid productivity in oleaginous microalgal cultivation outdoors

Yang

et al. 2015

Bioresource Technology

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Section: Optimization Of Urea Concentrations Outdoorsmentioning

confidence: 99%

Sufficient utilization of natural fluctuating light intensity is an effective approach of promoting lipid productivity in oleaginous microalgal cultivation outdoors

Yang

et al. 2015

Bioresource Technology

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“…The addition of NH 4 NO 3 was made according to the method proposed by Matsudo et al (2009) for nitrogen addition, using the following equation:…”

Section: Experimental Designmentioning

confidence: 99%

“…Spirulina platensis can be cultivated by batch, continuous, semicontinuous (Reichert et al, 2006) and fed-batch processes . The latter process, when conducted at both a suitable feeding time and feeding rate to supply the nitrogen source according to A. platensis demand, can avoid any inhibitory ammonia concentration in the medium (Bezerra et al, 2008;Carvalho et al, 2004;Matsudo et al, 2009). Ammonium nitrate provides the culture with a readily assimilable nitrogen source (ammonia) and one reserve nitrogen source (nitrate) because ammonia is the preferred type of nitrogen for S. platensis (Boussiba, 1989).…”

Section: Introductionmentioning

confidence: 99%

GROWTH AND COMPOSITION OF Arthrospira (Spirulina) platensis IN A TUBULAR PHOTOBIOREACTOR USING AMMONIUM NITRATE AS THE NITROGEN SOURCE IN A FED-BATCH PROCESS

Cruz-Martínez

Jesus

Matsudo

et al. 2015

Braz. J. Chem. Eng.

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-NH 4 NO 3 simultaneously provides a readily assimilable nitrogen source (ammonia) and a reserve of nitrogen (nitrate), allowing for an increase in Arthrospira platensis biomass production while reducing the cost of the cultivation medium. In this study, a 2 2 plus star central composite experimental design combined with response surface methodology was employed to analyze the influence of light intensity (I) and the total amount of added NH 4 NO 3 (M t ) on a bench-scale tubular photobioreactor for fed-batch cultures. The maximum cell concentration (X m ), cell productivity (P X ) and biomass yield on nitrogen (Y X/N ) were evaluated, as were the protein and lipid contents. Under optimized conditions (I = 148 µmol·photons·m -2 ·s -1 and M t = 9.7 mM NH 4 NO 3 ), X m = 4710 ±34.4 mg·L -1 , P X = 478.9 ±3.8 mg·L -1 ·d -1 and Y X/N = 15.87 ±0.13 mg·mg -1 were obtained. The best conditions for protein content in the biomass (63.2%) were not the same as those that maximized cell growth (I = 180 µmol·photons·m -2 ·s -1 and M t = 22.5 mM NH 4 NO 3 ). Based on these results, it is possible to conclude that ammonium nitrate is an interesting alternate nitrogen source for the cultivation of A. platensis in a fed-batch process and could be used for other photosynthetic microorganisms.

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“…12 The conventional nitrogen sources for the production of Arthrospira are sodium or potassium nitrates. However, the use of the fed-batch process made possible the use of a cheaper nitrogen source like urea either in open reactors 13,14,15 or tubular photobioreactors, 16 ensuring significant reduction of the production costs. It was shown that concentrations of urea higher than 300-500 mg L −1 exerted strong growth inhibition in batch cultivation.…”

Section: Introductionmentioning

confidence: 99%

Kinetic and thermodynamic investigation of Arthrospira (Spirulina) platensis fed‐batch cultivation in a tubular photobioreactor using urea as nitrogen source

Morocho‐Jácome

Converti

Sato

et al. 2012

J of Chemical Tech & Biotech

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Kinetic and thermodynamic investigation of Arthrospira (Spirulina) platensis fed-batch cultivation in a tubular photobioreactor using urea as nitrogen source JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, HOBOKEN, v. 87, n. 11, pp. 1574-1583, NOV, 2012 BACKGROUND: Fed-batch culture allows the cultivation of Arthrospira platensis using urea as nitrogen source. Tubular photobioreactors substantially increase cell growth, but the successful use of this cheap nitrogen source requires a knowledge of the kinetic and thermodynamic parameters of the process. This work aims at identifying the effect of two independent variables, temperature (T) and urea daily molar flow-rate (U), on cell growth, biomass composition and thermodynamic parameters involved in this photosynthetic cultivation.

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Repeated fed-batch cultivation of Arthrospira (Spirulina) platensis using urea as nitrogen source

Cited by 87 publications

References 27 publications

Sufficient utilization of natural fluctuating light intensity is an effective approach of promoting lipid productivity in oleaginous microalgal cultivation outdoors

Sufficient utilization of natural fluctuating light intensity is an effective approach of promoting lipid productivity in oleaginous microalgal cultivation outdoors

GROWTH AND COMPOSITION OF Arthrospira (Spirulina) platensis IN A TUBULAR PHOTOBIOREACTOR USING AMMONIUM NITRATE AS THE NITROGEN SOURCE IN A FED-BATCH PROCESS

Kinetic and thermodynamic investigation of Arthrospira (Spirulina) platensis fed‐batch cultivation in a tubular photobioreactor using urea as nitrogen source

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