The Characterization of Extracellular Polymeric Substances in Ariake Sediment and Its effects of Stabilization of Sediment

Abstract

The extracellular polymeric substances (EPS) of Ariake Sea sediment were isolated from Ariake Sea sediment. Distribution of monosaccharide and uronic acid determined. The soluble EPS fraction showed distribution of monosaccharides with Galactose, Glucose, Xylose, , Rhamnose, Fucose and size distribution showed polymer of around 10³-10⁷, and monomer of 10² Da. The relationship water content, the ratio of chlorophyll-a/feo pigment and carbohydrate were maintained in summer to winter. Result of rheological experiment that EPS, Slurry with EPS and sediment behave as viscose, non-Newtonian flueids. Flow curve for the slurry were unidentical and effects of the addition of EPS in the presence or absence of Ca²⁺.