Processes for enhancing yeast growth and productivity
AssigneeNovozymes A/S
InventorsAngela Shows, Armindo Ribeiro Gaspar
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Abstract
The invention relates to processes for enhancing yeast growth and/or productivity using peroxidase or a composition comprising peroxidase.
Claims24
A process for enhancing yeast growth and/or productivity, the process comprising contacting yeast with an effective amount of a peroxidase.
A process for propagating yeast for bioproduct production in a biofuel fermentation system, the process comprising introducing an enzyme composition comprising a peroxidase to a biofuel fermentation system, wherein the fermentation system comprises one or more fermentation vessels, pipes and/or components, and wherein the peroxidase is added at a concentration sufficient to enhance yeast growth and/or productivity in the biofuel fermentation system.
A process for producing a fermentation product from a starch-containing material, the process comprising:
- a) liquefying a starch-containing material in the presence of an alpha-amylase to form a liquefied mash;
- b) saccharifying the liquefied mash using a carbohydrate source generating enzyme to produce a fermentable sugar;
- c) fermenting the sugar using a fermenting organism under conditions suitable to produce the fermentation product,
- wherein a peroxidase is added before or during saccharifying step b) and/or fermenting step c).
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Dependencies are inferred from the claim text.