Mauran, an exopolysaccharide produced by the halophilic bacterium Halomonas maura, with a novel composition and interesting properties for biotechnology.
Mauran is an anionic, sulfated heteropolysaccharide with a high uronic-acid content, synthesized by strain S-30 of the halophilic bacterium Halomonas maura. Under optimum environmental and nutritional conditions, it is capable of producing up to 3.8 g of mauran per liter of medium. Aqueous solutions of mauran are highly viscous and display pseudoplastic, viscoelastic and thixotropic behavior. Its viscosity is stable over a wide pH range (3-11), after freezing-thawing processes, and in the presence of sucrose, salts, surfactants and alpha-hydroxyl acids. It has a high capacity for binding lead and other cations. Its molecular mass when collected from an MY medium supplemented with 2.5% w/v salt during the stationary growth phase is 4.7x10(6) Da.
Arias
Soledad
S
Exopolysaccharide Research Group, Department of Microbiology, Faculty of Pharmacy, University of Granada, 18071, Granada, Spain.
del Moral
Ana
A
Ferrer
Maria Rita
MR
Tallon
Richard
R
Quesada
Emilia
E
Béjar
Victoria
V
D001709:Biotechnology; D003470:Culture Media; D020632:Halomonas / Q000166:cytology / Q000235:genetics / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007474:Ion Exchange; D013058:Mass Spectrometry; D008670:Metals / Q000737:chemistry; D008854:Microscopy, Electron; D008970:Molecular Weight; D011135:Polysaccharides, Bacterial / Q000096:biosynthesis* / Q000737:chemistry*; D012988:Soil Microbiology; D014783:Viscosity
D003470:Culture Media; D008670:Metals; D011135:Polysaccharides, Bacterial; C587252:mauran