Immobilization on Polyethylenimine and Chitosan Sorbents Modulates the Production of Valuable Fatty Acids by the Chlorophyte Lobosphaera sp. IPPAS C-2047

Vasilieva, S.; Shibzukhova, K.; Solovchenko, A.; Chivkunova, O.; Antipova, C.; Morozov, A.; Lobakova, E.

Авторы: Vasilieva Svetlana, Shibzukhova Karina, Solovchenko Alexei, Chivkunova Olga, Antipova Christina, Morozov Alexey, Lobakova Elena
Журнал: Journal of Marine Science and Engineering
Том: 11
Номер: 4
Год издания: 2023
Издательство: MDPI
Местоположение издательства: Basel, Switzerland
Номер статьи: 865
DOI: 10.3390/jmse11040865
Аннотация: Green microalgae, including those from the genus Lobosphaera, are exploited in variousfields of biotechnology to obtain valuable fatty acids (e.g., arachidonic acid (C20:4, ARA)) for theproduction of infant formulae, food and feed additives. In nature, microalgae frequently exist innaturally immobilized state (as biofilms) with a limited cell division rate and increased stress resilience.In the fields of biotechnology, immobilization of microalgae on artificial cell carriers simplifiesbiomass harvesting and increases culture robustness and productivity. The choice of a suitable cellcarrier is central to biotechnology involving immobilized cultures. Cell carriers based on the naturalamine-containing polymer chitosan and synthetic polyethylenimine (PEI) are promising candidatesfor immobilization of phototrophic microorganisms. This is the first report on the effects of immobilizationon PEI and chitosan on the accumulation and composition of polyunsaturated fatty acids,including ARA, in Lobosphaera sp. IPPAS C-2047. Immobilization on PEI increased the ARA percentagein the total fatty acids and ARA accumulation by 72% and 81% compared to the suspended cellscultured in complete or nitrogen-deprived medium 14 days, respectively. Immobilization of Lobosphaerasp. on the chitosan-based carrier reduced the ARA percentage but increased oleic and α-linoleicacid percentages. The mechanisms of the effects of immobilization on the fatty acid profiles ofthe microalgae are discussed.
Добавил в систему: Соловченко Алексей Евгеньевич

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Immobilization on Polyethylenimine and Chitosan Sorbents Modulates the Production of Valuable Fatty Acids by the Chlorophyte Lobosphaera sp. IPPAS C-2047статья

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