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Recent Advances of Microalgae Exopolysaccharides for Application as Bioflocculants

2022; Multidisciplinary Digital Publishing Institute; Volume: 3; Issue: 1 Linguagem: Inglês

10.3390/polysaccharides3010015

2673-4176

Juliana Botelho Moreira, Suelen Goettems Kuntzler, Priscilla Quênia Muniz Bezerra, Ana Paula Aguiar Cassuriaga, Munise Zaparoli, Jacinta Lutécia Vitorino da Silva, Jorge Alberto Vieira Costa, Michele Greque de Morais,

Aquatic Ecosystems and Phytoplankton Dynamics

Microalgae are used in flocculation processes because biopolymers are released into the culture medium. Microalgal cell growth under specific conditions (temperature, pH, luminosity, nutrients, and salinity) provides the production and release of exopolysaccharides (EPS). These biopolymers can be recovered from the medium for application as bioflocculants or used directly in cultivation as microalgae autoflocculants. The optimization of nutritional parameters, the control of process conditions, and the possibility of scaling up allow the production and industrial application of microalgal EPS. Therefore, this review addresses the potential use of EPS produced by microalgae in bioflocculation. The recovery, determination, and quantification techniques for these biopolymers are also addressed. Moreover, other technological applications of EPS are highlighted.