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Characterization of Lipid Production in Chlorella sp. Cultivated in Different Plant Fertilizers

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  • Bipasha Chakrabarty

    (Department of Chemistry, Università Degli Studi di Bari Aldo Moro, 70126 Bari, Italy
    Department of Environmental Engineering, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland)

  • Łukasz Barczak

    (Department of Environmental Engineering, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland)

  • Paulina Rusanowska

    (Department of Environmental Engineering, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland)

  • Magda Dudek

    (Department of Environmental Engineering, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland)

  • Marcin Zieliński

    (Department of Environmental Engineering, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland)

Abstract

Microalgae have gained attention due to their higher reproduction rate and lipid productivity. In particular, various stress conditions lead to an overproduction of lipids in microalgae cells. The study investigated the influence of additional CO 2 introduced with air into the reactor during biomass growth of Chlorella sp. Additionally, increased phosphorus concentration in the medium under stress cultivation (low nitrogen concentration) was examined. The partial pressure of CO 2 and its increased availability to Chlorella sp. in the cultivation medium increased biomass growth (1.4 times) and chlorophyll content (2.5 times) in microalgae cells. A high phosphorus fertilizer significantly increased lipid production under stress conditions with CO 2 supply to 85.2 mg/g (2.6 times) and without CO 2 to 73.8 mg/g (2.2 times). A high concentration of phosphorus in the culture medium stimulated the synthesis of C16:0 (about 38–45%) and C18:1 CIS9 (about 24–30%). The results confirm that the fertilizers can be used as a culture medium to induce stress and stimulate lipid production. Adjusting the composition of the fertilizers and controlling the additional CO 2 supply could prove beneficial to increase the content of the desired fatty acids.

Suggested Citation

  • Bipasha Chakrabarty & Łukasz Barczak & Paulina Rusanowska & Magda Dudek & Marcin Zieliński, 2024. "Characterization of Lipid Production in Chlorella sp. Cultivated in Different Plant Fertilizers," Energies, MDPI, vol. 17(23), pages 1-14, December.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:23:p:6193-:d:1539395
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    References listed on IDEAS

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    1. Mette Hein & Kaj Sand-Jensen, 1997. "CO2 increases oceanic primary production," Nature, Nature, vol. 388(6642), pages 526-527, August.
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