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Alternative fertilizer-based growth media support high lipid contents without growth impairment in Scenedesmus obliquus BR003
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Alternative fertilizer-based growth media support high lipid contents without growth impairment in Scenedesmus obliquus BR003
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Journal Article
Alternative fertilizer-based growth media support high lipid contents without growth impairment in Scenedesmus obliquus BR003
2020
Overview
Nitrogen (N) sources have been target in microalgae cultivation studies, considering their nutritional impact on growth and high costs. Here, we have evaluated the growth of Scenedesmus obliquus BR003, applying alternative low-cost culture media containing ammonium and urea, or combinations of both N sources. The culture media were applied for indoor and outdoor cultivation, followed by growth analyses and metabolic characterization. The alternative culture media B4 and L4 supported higher biomass production (1.4 g L−1) compared to BG11 (nitrate-based medium). In addition, the lipid percentage was higher for B4 (ammonium-based culture medium), reaching up to 25% DW. High contents of carbohydrates (60%) and proteins (40%) were also obtained in media with ammonium and urea, respectively. Considering the lower costs of alternative fertilizer-based media, using ammonium and/or urea as N sources, and the high lipid content observed, we suggest these media as viable for large-scale production of S. obliquus.
