Novel Bacteria and Methods of Use thereof
AssigneeLanzatech New Zealand Limited
InventorsSean Dennis Simpson, Richard Llewellyn Sydney Forster, Phuong Loan Tran, Matthew James Rowe, Ian Linstrand Warner
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Abstract
A biologically pure isolate of a selected bacterium derived from Clostridium autoethanogenum is described which has improved efficiency in the production of ethanol by anaerobic fermentation of substrates comprising carbon monoxide. The bacterium can produce ethanol and acetate at an ethanol to acetate ratio of at least 1.0 and has a productivity of at least 1.2 g of ethanol/l of fermentation broth per day. The bacterium is also characterized in that it has substantially no ability to sporulate.
Claims16
A biologically pure isolate of a selected bacterium derived from Clostridium autoethanogenum, said bacterium characterized by an ability to produce products comprising ethanol and acetate by anaerobic fermentation of a substrate comprising CO, wherein the products are produced at an ethanol to acetate ratio of at least 1.0 and the productivity of the bacterium is at least 1.2 g of ethanol/1 of fermentation broth per day.
A biologically pure isolate of a selected bacterium derived from Clostridium autoethanogenum, said bacterium having substantially no ability to sporulate and at least one of the other defining characteristics:
- (i) an ability to grow in minimal media in the presence or absence of yeast extract;
- (ii) an ability to grow more rapidly, to produce a higher ratio of ethanol to acetate, and/or to produce a higher concentration of ethanol, in a media in which yeast extract is not present compared to a media in which yeast extract is present;
- and
- (iii) non-motile.
Dependencies are inferred from the claim text.