In situ detoxification of fermentation inhibitors with reducing agents
AssigneeSekab E-Technology AB
InventorsBjörn Alriksson, Leif Jönsson, Sune Wännström
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Abstract
The present invention provides a method for decreasing the fermentation inhibition in a fermentation of cellulose-derived material in a fermentor, wherein fermentation inhibitory properties of the material subjected to fermentation is decreased by an addition of at least one reducing agent to the fermentor. Further, there is provided a method of increasing the fermentability of a fermentation process comprising the steps of measuring the fermentability of the fermentation process and if the fermentability is below a reference value, then adding at least one reducing agent to the fermentation process.
Claims5
A method of increasing the fermentability of a process of producing ethanol, butanol, or succinic acid by fermenting pretreated lignocellulose material, that contains fermentation inhibitors, comprising the steps of
- a) measuring the fermentability of an ongoing yeast fermentation process and if said fermentability is below a reference value indicating decreased production, then
- b) adding dithionite to the ongoing fermentation process.
Dependencies are inferred from the claim text.