Production of microbial polysaccharides
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United States of America Patent
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May 17, 1983
Grant Date -
N/A
app pub date -
Aug 18, 1981
filing date -
Aug 19, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to a process for the production of a polysaccharide wherein a microorganism species which produces polysaccharide (preferably in the stationary phase of the growth cycle) is supported on a porous, particulate inert support, the pore size being greater than about 0.5 .mu.m, to form an immobilized cell system, aqueous nutrient medium is passed through the immobilized system, and polysaccharide-containing medium is withdrawn from the system. The invention provides also for the use of the polysaccharide in the displacement of fluid from subsurface formations, and an immobilized cell system for use in the foregoing process.
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