Chemistry: molecular biology and microbiology – Micro-organism – per se ; compositions thereof; proces of... – Utilizing media containing lower alkanol
Patent
1986-07-15
1989-02-28
Penland, R. B.
Chemistry: molecular biology and microbiology
Micro-organism, per se ; compositions thereof; proces of...
Utilizing media containing lower alkanol
435255, 435313, 435940, C12N 132
Patent
active
048085340
ABSTRACT:
Method and apparatus is described for the microbiological production of single-cell protein making use of ethanol as a base material thereby allowing the protein produced to be used for human consumption.
The process involves the cultivation of ethanol activated yeasts at temperatures between 20.degree. and 40.degree. C. under aerobic conditions in a fermentation column containing a dilute nutrient medium having a pH value in the range 2.5 to 5 containing nutrient salts, acid phosphate and nitrogen-containing substances in which the nutrient medium is continuously circulated into and through and out of the fermentation column and at each re-entry into the column is introduced tangentially into a zone which is oxygen enriched using oxygen gas molecules in the range 1 to 7 mu to form a bio-mass which can be separated and dried to form a protein product.
The formation of a large gas bubble in the fermentation column is prevented by carrying the process out under a positive pressure and a gas extraction stage is provided immediately beyond the column. Pure oxygen or oxygen-enriched air may be used.
In apparatus for performing the above method the pump for circulating the medium from the heat exchanger to the column is located in a conduit between the heat exchanger and the column.
Dispersion of the oxygen or oxygen-enriched air is achieved by one or more sintered plates.
REFERENCES:
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patent: 3847748 (1974-11-01), Gibson et al.
patent: 3954565 (1976-05-01), Boiko et al.
patent: 3985622 (1976-10-01), Hawkins
patent: 4036699 (1977-07-01), Quigg
patent: 4041180 (1977-08-01), Wilson
Garrido Marquez Josu
Schick Josef H.
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