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Abstract

Methods for extracting from microalgae biomass valuable biomaterials, including polysaccharides, which can be used as coatings (biofilms) and other applications are described. The methods provide for partial separation of biomaterials into fractions enriched in different materials, which increases the utility and value of the original biomass, including a protein-enriched fraction, a polysaccharide-enriched fraction, and a lignin-rich fraction. By using the methods of the invention, a biomass source which is currently underutilized can be refined and processed into higher value products, leaving very little or no left-over residue material. The methods can advantageously be used for utilization and valuation of left-over biomass after astaxanthin extraction from microalgae.

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First Claim