title: Production of extracellular polysaccharide matrix by Zoogloea ramigera.
abstract: Zoogloea ramigera 115 synthesized large amounts of matrix polymer from fructose, galactose, glucose, lactose, mannose, soluble starch, and sucrose when these carbohydrates were used as supplements to a chemically defined medium. All of them supported polymer synthesis to the extent that cultures thickened to a gel. Concentration of carbohydrate nutrients in the range 0.5 to 2.0% was not a critical factor in determining eventual total thickening to a gel, except in relation to the incubation time required. Glucose disappeared from the growth medium rapidly and correlated with increasing cell growth and poly-beta-hydroxybutyrate (PHB) accumulation. PHB concentration decreased as extracellular polymer was synthesized, suggesting a link between PHB and extracellular polymer production.
mesh_terms: D001120:Arginine / Q000378:metabolism; D001419:Bacteria / Q000032:analysis / Q000254:growth & development / Q000378:metabolism*; D002854:Chromatography, Paper; D003470:Culture Media; D005632:Fructose / Q000378:metabolism; D005782:Gels; D005947:Glucose / Q000378:metabolism; D006851:Hydrochloric Acid; D006868:Hydrolysis; D006885:Hydroxybutyrates / Q000096:biosynthesis; D007785:Lactose / Q000378:metabolism; D008358:Mannose / Q000378:metabolism; D011135:Polysaccharides, Bacterial / Q000032:analysis / Q000096:biosynthesis*; D012997:Solvents; D013213:Starch / Q000378:metabolism; D013395:Sucrose / Q000378:metabolism; D014783:Viscosity; D014871:Water Microbiology
chemical_list: D003470:Culture Media; D005782:Gels; D006885:Hydroxybutyrates; D011135:Polysaccharides, Bacterial; D012997:Solvents; D005632:Fructose; D013395:Sucrose; D013213:Starch; D001120:Arginine; D005947:Glucose; D007785:Lactose; D008358:Mannose; D006851:Hydrochloric Acid