Patent ID: 8530644

Claim:
A method of reducing lipopolysaccharide levels in a lipopolysaccharide containing alginate, said method comprising: (a) providing an aqueous solution containing 0.05-50 wt. % of dissolved lipopolysaccharide-containing alginate; 0.001-10 wt. % of a surfactant; 0.05-15 wt. % of solid adsorbent; and at least 50 wt. % of water; (b) allowing the solid adsorbent to adsorb lipopolysaccharides; (c) separating the solid adsorbent containing adsorbed lipopolysaccharides from the remaining aqueous solution by means of centrifugation, sedimentation or filtration; and (d) recovering the alginate containing a reduced level of lipopolysaccharide from the separated aqueous solution.