Optimization of the production of lipids and carotenoids in the microalga Golenkinia aff. brevispicula
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Author/sRearte, T. A. Figueroa, F. L. Gómez-Serrano, C. Vélez, C. G. Marsili, S. Iorio, A. de F. González-López, C. V. Cerón-García, M. C. Abdala-Díaz, R. T. Acién-Fernández, F. G.
Microalgae are a promising platform to produce natural pigments and lipids when compared to traditional sources, since they present faster growth and biomass productivity and there is a wide diversity that has not been studied yet. The green microalgae belonging to the genus Golenkinia presents few reports of its biomass production and applications. In this work, the productivity of lipids and carotenoids was studied in the strain Golenkinia aff. brevispicula FAUBA-3 using a two-stage cultivation system: a first step for biomass production under semicontinuous cultures, and a second step for the accumulation of lipids and carotenoids under batch salinity stress (35 g L−1). The highest biomass productivity (0.92 g L−1 day−1) was obtained under a dilution rate of 0.4 day−1. The growth rate (μ) was a hyperbolic function of average irradiance inside the culture (Eav). The optimum Eav was 88.4 μmol photons m−2 s−1 and the maximum specific growth rate (μmax) was 0.85 day−1. Photoinhibition w...