Thermophilic ethanol production in a two-stage closed system

PCT No. PCT/GB88/00411 Sec. 371 Date Nov. 27, 1989 Sec. 102(e) Date Nov. 27, 1989 PCT Filed May 24, 1988 PCT Pub. No. WO88/09379 PCT Pub. Date Dec. 1, 1988.Production of ethanol by a process in which a strain of Bacillus stearothermophilus or other thermophilic, facultatively anaerrobic bacterium is...

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Hauptverfasser:	HARTLEY, BRIAN S
Format:	Patent
Sprache:	eng
Schlagworte:	BEER BIOCHEMISTRY CHEMISTRY ENZYMOLOGY FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE METALLURGY MICROBIOLOGY MUTATION OR GENETIC ENGINEERING SPIRITS VINEGAR WINE
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Zusammenfassung:	PCT No. PCT/GB88/00411 Sec. 371 Date Nov. 27, 1989 Sec. 102(e) Date Nov. 27, 1989 PCT Filed May 24, 1988 PCT Pub. No. WO88/09379 PCT Pub. Date Dec. 1, 1988.Production of ethanol by a process in which a strain of Bacillus stearothermophilus or other thermophilic, facultatively anaerrobic bacterium is selected for the characteristics of fermenting sugars both aerobically and anaerobically and of being active in anaerobic fermentation at 70 DEG C. or above and (i) anaerobic fermentation is carried out with continuing removal of ethanol at 70 DEG C. or above; (ii) the fermentative activity of the bacterium is maintained by withdrawing a proportion of the anaerobic fermentation medium on a continuing basis preferably with removal of ethanol and allowing the bacteria therein to multiply aerobically, using residual sugars or metabolites thereof present in the medium, before being returned to the anaerobic fermentation.