Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing compound containing saccharide radical
Patent
1981-01-12
1982-10-19
Kepplinger, Esther M.
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing compound containing saccharide radical
435813, 435819, 435829, C12P 1904, C12R 105
Patent
active
043551068
ABSTRACT:
The present invention is directed to a two-stage continuous process for the production of a gelable curdlan-type exopolysaccharide. In the first stage a stable, curdlan-producing strain of microorganism such as Alcaligenes faecalis var. myxogenes ATCC 31749 and ATCC 31750, is grown aerobically in an aerated, agitated culture medium containing assimilable carbon, nutrients and organic salts. The amount of nitrogen in the first stage is so limited that the effluent therefrom contains substantially no inorganic nitrogen. The effluent is introduced into a second stage in a constant volume fermenter wherein it is mixed with a nitrogen-free carbohydrate. The resultant mixture is aerated and mixed at pH 5.5 to 6.5 at a temperature of from 25.degree. to 35.degree. C., the volume and dilution rate in the reactor being selected so that the residence time of the microorganism in the fermenter does not exceed an equivalent to the maximum length of time during which the activity of a batch culture of the microorganism with respect to product synthesis is maximal. The product is subsequently isolated.
REFERENCES:
patent: 3015612 (1962-01-01), Pirt et al.
patent: 3328262 (1967-06-01), Lindblom et al.
patent: 3754925 (1973-08-01), Kimura et al.
patent: 4218538 (1980-08-01), Church
patent: 4298725 (1981-11-01), Williams et al.
George Weston Limited
Kepplinger Esther M.
LandOfFree
Continuous process for the production of gelable exopolysacchari does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Continuous process for the production of gelable exopolysacchari, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous process for the production of gelable exopolysacchari will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1339035