Patent ID: 9555018
Date: 2017-01-31
CPC Classifications: A01N,A61K,C12N,C12P,Y02E

Claim:
1. A method of controlling undesirable microorganism concentration in an aqueous system employed in a fermentation process, the method comprising the steps of: (a) introducing a fermentable carbohydrate to an aqueous solution; (b) introducing at least one yeast to said aqueous solution; (c) introducing a first organic acid and a second organic acid into the aqueous system, wherein the aqueous system comprises undesirable microorganisms wherein at least one undesirable microorganism is selected from the group consisting of lactic acid producing bacteria and acetic acid producing bacteria; and wherein the first organic acid is selected from citric acid, benzoic acid, or their salts; and wherein the first organic acid and a second organic acid is added to at least one stage in the fermentation process selected from liquefaction, propagation, conditioning and fermentation.