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Extracellular Polymeric Substances (EPS) as Microalgal Bioproducts: A Review of Factors Affecting EPS Synthesis and Application in Flocculation Processes

Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland
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Academic Editor: Constantine D. Rakopoulos
Energies 2021, 14(13), 4007; https://doi.org/10.3390/en14134007
Received: 23 May 2021 / Revised: 30 June 2021 / Accepted: 30 June 2021 / Published: 2 July 2021
(This article belongs to the Special Issue Biofuel and Bioenergy Production from Microalgae)
Microalgae are natural resources of intracellular compounds with a wide spectrum of applications in, e.g., the food industry, pharmacy, and biofuel production. The extracellular polymeric substances (EPS) released by microalgal cells are a valuable bioproduct. Polysaccharides, protein, lipids, and DNA are the main constituents of EPS. This review presents the recent advances in the field of the determinants of the synthesis of extracellular polymeric substances by microalgal cells and the EPS structure. Physical and chemical culture conditions have been analyzed to achieve useful insights into the development of a strategy optimizing EPS production by microalgal cells. The application of microalgal EPS for flocculation and mechanisms involved in this process are also discussed in terms of biomass harvesting. Additionally, the ability of EPS to remove toxic heavy metals has been analyzed. With their flocculation and sorption properties, microalgal EPS are a promising bioproduct that can potentially be used in harvesting algal biomass and wastewater management. View Full-Text
Keywords: extracellular polymeric substances; microalgae cultivation; flocculation; harvesting; biomass extracellular polymeric substances; microalgae cultivation; flocculation; harvesting; biomass
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MDPI and ACS Style

Babiak, W.; Krzemińska, I. Extracellular Polymeric Substances (EPS) as Microalgal Bioproducts: A Review of Factors Affecting EPS Synthesis and Application in Flocculation Processes. Energies 2021, 14, 4007. https://doi.org/10.3390/en14134007

AMA Style

Babiak W, Krzemińska I. Extracellular Polymeric Substances (EPS) as Microalgal Bioproducts: A Review of Factors Affecting EPS Synthesis and Application in Flocculation Processes. Energies. 2021; 14(13):4007. https://doi.org/10.3390/en14134007

Chicago/Turabian Style

Babiak, Wioleta, and Izabela Krzemińska. 2021. "Extracellular Polymeric Substances (EPS) as Microalgal Bioproducts: A Review of Factors Affecting EPS Synthesis and Application in Flocculation Processes" Energies 14, no. 13: 4007. https://doi.org/10.3390/en14134007

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