Composition and Rheological Properties of Extracellular Polysaccharide 105-4 Produced by Pseudomonas sp. Strain ATCC 53923.
A soil isolate produced a novel extracellular polysaccharide (EPS) with unusually potent thickening powers. The EPS contained d-mannose, d-glucose, d-galactose, and d-glucuronic acid in the unique molar ratio 1:4:1:2 and 10 to 15% acetate. Viscosities of a 1-g/liter aqueous solution were 1 x 10 and 14 x 10 cP at shear rates of 0.01 and 0.1 s, respectively. The EPS was insensitive to high concentrations of NaCl and CaCl(2).
Dasinger
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Pfizer Central Research, Groton, Connecticut 06340.
McArthur
H A
HA
Lengen
J P
JP
Smogowicz
A A
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Miller
J W
JW
O'neill
J J
JJ
Horton
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D
Costa
J B
JB