Optimization, upscaling and kinetic study of famine technique in a microalgal biofilm-based photobioreactor for nutrient removal

Danaee, Soroosh; Heydarian, Seyed Mohammad; Ofoghi, Hamideh; Varzaghani, Neda Badali

doi:10.1016/j.eti.2021.102043

Cited by 4 publications

(2 citation statements)

References 38 publications

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“…Following the nature-inspired approach, microalgae immobilized through either adsorption on the surface of or entrapment within artificial cell carriers have found broad applications in biotechnology [13][14][15][16]. The main advantage of immobilized cells as compared to their suspended counterparts is simplified biomass harvesting, which is a key problem in microalgal biotechnology [17,18].…”

Section: Introductionmentioning

confidence: 99%

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

Vasilieva

Shibzukhova

Solovchenko

et al. 2023

JMSE

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Green microalgae, including those from the genus Lobosphaera, are exploited in various fields of biotechnology to obtain valuable fatty acids (e.g., arachidonic acid (C20:4, ARA)) for the production of infant formulae, food and feed additives. In nature, microalgae frequently exist in naturally 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 simplifies biomass harvesting and increases culture robustness and productivity. The choice of a suitable cell carrier is central to biotechnology involving immobilized cultures. Cell carriers based on the natural amine-containing polymer chitosan and synthetic polyethylenimine (PEI) are promising candidates for immobilization of phototrophic microorganisms. This is the first report on the effects of immobilization on 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 percentage in the total fatty acids and ARA accumulation by 72% and 81% compared to the suspended cells cultured in complete or nitrogen-deprived medium 14 days, respectively. Immobilization of Lobosphaera sp. on the chitosan-based carrier reduced the ARA percentage but increased oleic and α-linoleic acid percentages. The mechanisms of the effects of immobilization on the fatty acid profiles of the microalgae are discussed.

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Section: Introductionmentioning

confidence: 99%

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

Vasilieva

Shibzukhova

Solovchenko

et al. 2023

JMSE

View full text Add to dashboard Cite

show abstract

“…Following the nature-inspire approach, microalgae immobilized either by adsorption on the surface of or entrapment within artificial cell carriers found broad application in biotechnology [13][14][15][16]. The main advantage of immobilized cells as compared to their suspended counterparts is simplified biomass harvesting, which is a key problem of microalgal biotechnology [17,18].…”

Section: Introductionmentioning

confidence: 99%

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

Vasilieva¹,

Shibzukhova²,

Solovchenko³

et al. 2023

Preprint

View full text Add to dashboard Cite

Green microalgae including those from the genus Lobosphaera are exploited in biotechnology to obtain valuable fatty acids e.g., arachidonic acid (C20:4, ARA) for the production of infant formulae, food and feed additives. In nature, microalgae frequently exist in naturally immobilized state (as biofilms) with limited cell division rate and increased stress resilience. In biotechnology, immobilization of microalgae on artificial cell carriers simplifies biomass harvesting, increases culture robustness and productivity. The choice of suitable cell carrier is central to biotechnology of immobilized culture. Cell carriers based on the natural amine-containing polymer chitosan and synthetic polyethylenimine (PEI) are promising candidates for immobilization of phototrophic microorganisms. This is the first report on the effects of immobilization on PEI and chitosan on the accumulation and composition of polyunsaturated fatty acids, including ARA, in Lobosphaera sp. IPPAS C-2047. The immobilization on PEI increased ARA percentage in the total tatty acids and ARA accumulation by 72% and 81%, compared with the suspended cells cultured respectively in complete or nitrogen-deprived medium 14 days. Immobilization of Lobosphaera sp. on the chitosan-based carrier declined ARA but increased oleic and α-linoleic acid percentages. Mechanisms of the effects of immobilization on fatty acid profiles of the microalgae are discussed.

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Exploring advanced phycoremediation strategies for resource recovery from secondary wastewater using a large scale photobioreactor

Dey,

Ortiz Tena,

Wang

et al. 2024

Bioresource Technology

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Optimization, upscaling and kinetic study of famine technique in a microalgal biofilm-based photobioreactor for nutrient removal

Cited by 4 publications

References 38 publications

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

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

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

Exploring advanced phycoremediation strategies for resource recovery from secondary wastewater using a large scale photobioreactor

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