| Title | Mixotrophic growth of a highly acidic habitat microalga for production of valuable fatty acids |
|---|---|
| ID_Doc | 7770 |
| Authors | Robles, M; Ostojic, C; Ruiz-Domínguez, MC; Cuaresma, M; Gonzalo, C; Obregón, V; Fuentes, JL; Bartolomé, A; Vilchez, C |
| Title | Mixotrophic growth of a highly acidic habitat microalga for production of valuable fatty acids |
| Year | 2024 |
| Published | |
| Abstract | Photoautotrophic algal cultivation is challenging due to the shadowing effect produced by an increase in the number of cells; under such circumstances, mixotrophic growth might be an efficient alternative. We grew cultures of the autochthonous acidotolerant microalga Elliptochloris sp. on crude technical glycerin or glucose bubbled with either only air or air containing 2.5 % (v/v) CO2. We found that CO2 strongly influenced the production of Elliptochloris sp., as higher growth occurred in mixotrophy with CO2-enriched air compared to that with only air. Mixotrophy with CO2-enriched air allowed to reach higher biomass productivities and facilitated an increase in the relative abundance of saturated fatty acids. Nevertheless, mixotrophy with only air resulted in an increase of both saturated and unsaturated fatty acids, but biomass productivities were lower. These results, along with the limited biological contamination facilitated by low pH, suggest that this microalga might be attractive for large-scale production within the circular economy model. |
| https://link.springer.com/content/pdf/10.1007/s10811-024-03255-5.pdf |
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