Journal
BIOTECHNOLOGY LETTERS
Volume 26, Issue 21, Pages 1635-1638Publisher
SPRINGER
DOI: 10.1007/s10529-004-3187-y
Keywords
Antarctica; exopolysaccharides; extremophiles; Halomonas; sugar composition
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A haloalkalophilic Halomonas strain CRSS, isolated from salt sediments in Antarctica, produced exocellular polysaccharides (EPS) up to 2.9 g g(-1) stop dry cells. Acetate was the most efficient carbon source for EPS production. The composition of media strongly affected the nature of the polymers; a mannan and a xylo-mannan, were obtained when cells were grown on complex media. Acetate was the most efficient carbon source for EPS production and in presence of this substrate, a new polysaccharide, a fructo-glucan, was produced. The EPS fraction was composed by glucose, fructose, glucosamine and galactosamine in relative proportions of 1:0.7:0.3:trace.
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