Microalgae as an aquaculture feed produced in a short light-path annular column photobioreactor

0573512 - MBÚ 2024 RIV DE eng J - Článek v odborném periodiku
Štěrbová, Karolína - Manoel, Joao Camara - Lakatos, Gergely Erno - Grivalský, Tomáš - Masojídek, Jiří
Microalgae as an aquaculture feed produced in a short light-path annular column photobioreactor.
Journal of Applied Phycology. Roč. 35, č. 2 (2023), s. 603-611. ISSN 0921-8971. E-ISSN 1573-5176
Grant ostatní: European Regional Development Fund(CZ) ATCZ221
Program: Interreg ČR-At
Institucionální podpora: RVO:61388971
Klíčová slova: Alternative aquaculture feed * Annular-column photobioreactor * Fatty acids * Microalgae
Obor OECD: Microbiology
Impakt faktor: 3.3, rok: 2022
Způsob publikování: Open access
https://link.springer.com/article/10.1007/s10811-023-02928-x

In this work, four microalgae species (Chlorella vulgaris, Trachydiscus minutus, Monodopsis sp., and Monoraphidium sp.) were selected and grown in a novel, 30 L short-light path annular-column photobioreactor (AC-PBR). The aim was to test the microalgae growth on a pilot scale and evaluate the potential use as an alternative fish feed in hatcheries based on the content and composition of fatty acids. All microalgae species reached a high biomass density between 3.65 and 5.32 g DW L−1 during a 14-day trial. The highest growth rate of 0.25 ± 0.05 d−1 was calculated for Trachydiscus culture. The highest total content of fatty acids (TFA) was determined for Monodopsis and Trachydiscus biomass as the concentration reached 74.5 ± 6.3 and 72.4 ± 7.6 mg g−1 DW, respectively. These two species contained mostly eicosapentaenoic acid (EPA, C20:5n3), the crucial FA for carnivorous fish whose concentration reached the value of 25.3 ± 0.9% and 31.9 ± 2.0% of TFA for Monodopsis and Trachydiscus, respectively. A high amount of linoleic acid (LA, C18:2n6), another important FA for freshwater aquafeed, was found in Chlorella biomass up to the concentration of 21.9 ± 1.5% of TFA. The present results suggest the feasibility of in-house cultivation of selected microalgae species as a quality live feed source for fish hatcheries.
Trvalý link: https://hdl.handle.net/11104/0343945