Ethanol production by high performance bacterial fermentation

Details Ethanol production by high performance bacterial fermentation Ethanol production by high performance bacterial fermentation

1984-08-15

1987-03-03

Penland, R. B.

Chemistry: molecular biology and microbiology

Micro-organism, tissue cell culture or enzyme using process...

Preparing oxygen-containing organic compound

435813, C12P 714

Patent

active

046475346

ABSTRACT:
The present invention is directed to the preparation of ethanol by bacterial fermentation. It makes use of a microorganism capable of producing ethanol and the process is carried out in two stages. In the first stage a bacterial cell suspension is produced together with ethanol in an ethanol concentration range that does not substantially inhibit production of the bacterial cells in a medium containing a source of nitrogen and a source of carbon. Ethanol is then produced in the absence of substantial bacterial cell production by the addition of fermentable sugar to the bacterial cell suspension which is produced in the first stage. The preferred microorganism is a member of the genus Zymomonas.

REFERENCES:
patent: 1920735 (1933-08-01), Bakonyi
Rogers et al, "High Productivity Ethanol Fermentations with Zymomones Mobiles", Process Biochemistry, Aug., Sep. 1980, pp. 7-11.
Fliekinger, "Current Research on Conversion of Cellulosic Carbohydrates into Liquid Fuels", Biotech & Bioeng., vol. XXII, pp. 27-48 (1980).
Belaich Uncoupling in Bacterial Growth: Effect of Pantothenate Starvation on Growth of Z. mobilis", J. Gen. Microbiol 70, (1972), pp. 179-185.

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