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US 2022/0177932 A1Published application
Process and composition for controlling ethanol production
OwnerRyan H. Senaratne, Abel Priceinventors
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Abstract
The present invention provides a process for controlling the production of ethanol by microbial fermentation of gaseous substrates. More specifically, a process is provided for controlling ethanol productivity through addition of vitamins. In accordance with the process, vitamins B1, B5 and B7 are added in amounts that increase specific ethanol productivity.
Claims20
A fermentation process, comprising:
- providing a CO-containing gaseous substrate to a fermentor that includes a fermentation broth;
- providing vitamin B1, B5, and B7 to the fermentation broth, wherein a feed rate of vitamin B5 is about 25 to about 150 ug/g cell produced or less;
- and
- fermenting the CO-containing gaseous substrate with one or more acetogenic bacteria, wherein the process provides a specific ethanol productivity rate of about 8 g/day/gram cells or more.
1 more element
A composition comprising:
- one or more of a source of NH4+, P, K, Fe, Ni, Co, Se, Zn, W, or Mg;
- vitamin B1;
- vitamin B5;
- and
- vitamin B7,
- wherein a feed rate of vitamin B5 is about 25 to about 150 ug/g cell produced or less.
3 more elements
Dependencies are inferred from the claim text.