ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
The polysaccharide produced in good yields by Arthrobacter viscosus NRRL B-1973 when grown in liquid medium containing glucose has been isolated from the culture fluids, purified and characterized. The constituents of this water-soluble polysaccharide have been shown to be D-glucose, D-galactose, and D-mannuronic acid (as the potassium salt) in approximately equimolar proportions, and about 25% of O-acetyl groups. The rarity of known occurrences of D-mannuronic acid in polysaccharides other than alginates is documented. Properties which have been observed as significant for utilization include, for both native and deacetylated forms of the polysaccharide: high viscosity of dispersions in water and in solutions containing chlorides, stability of viscosity to shear and to pH change in the normal range, and excellent quality of unsupported films; and for the native polysaccharide: stability in storage and the favorable influence of alcohol-water solvent on rate of dispersion and viscosity attained.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1965.070090223
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