Clostridiumm ljungdahlii, an anaerobic ethanol and acetate producing microorganism
AssigneeBoard of Trustees of the University of Arkansas
InventorsJames L. Gaddy, Edgar C. Clausen
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Abstract
A newly discovered microorganism was isolated in a biologically pure culture and designated Clostridium ljungdahlii, having the identifying characteristics of ATCC No. 49587. Cultured in an aqueous nutrient medium under anaerobic conditions, this microorganism is capable of producing ethanol and acetate from CO and H.sub.2 O and/or CO.sub.2 and H.sub.2 in synthesis gas. Under optimal growth conditions, the microorganism produces acetate in preference to ethanol. Conversely, under non-growth conditions, ethanol production is favored over acetate.
Claims7
A biologically pure culture of the microorganism Clostridium ljungdahlii, having all of the identifying characteristics of ATCC No. 49587.
A biologically pure culture of the microorganism Clostridium ljungdahlii, having the identifying characteristics of ATCC No. 49587, said culture, under anaerobic conditions, having the ability to produce ethanol and acetate upon fermentation in an aqueous nutrient medium containing synthesis gas as a substrate.
A biologically pure culture of the microorganism Clostridium ljungdahlii, having all of the identifying characteristics of ATCC No. 49587, said culture, under anaerobic conditions, having the ability to produce acetate in an aqueous nutrient medium comprising sources of carbon.
A biologically pure culture of the microorganism Clostridium ljungdahlii, having all of the identifying characteristics of ATCC No. 49587, said culture exhibiting the following characteristics:
- rod-shaped, motile, gram-positive, and strictly anaerobic.
A biologically pure culture of the microorganism Clostridium ljungdahlii, having all of the identifying characteristics of ATCC No. 49587, said culture, under anaerobic conditions, having the ability to utilize pyruvate, xylose, arabinose, and fructose as substrates for growth.
Dependencies are inferred from the claim text.