Methods using peracids for controlling corn ethanol fermentation process infection and yield loss

摘要

A process for the use of peracid compositions to eliminate and/or control the growth of undesirable bacteria, including contaminating bacteria, in the fermentation production of alcohol is disclosed. Beneficially, the peracid compositions and methods of use of the same do not interfere or inhibit the growth or replication of yeast and have low or no adverse environmental impact.

主权项

1. A method for reducing and/or eliminating microbial populations in a fermentation system without reducing yeast populations comprising:
applying a peracid composition to sanitize a fermentation system, wherein the peracid composition comprises a medium chain peracid and wherein the fermentation system comprises one or more fermentation vessels, pipes and/or components; providing or obtaining a mash sources in said fermentation system, wherein the obtaining of a mash source is a result of fermenting mash in the presence of at least a portion of said peracid composition, and yeast in a vessel to produce ethanol and a solids content, wherein said peracid composition controls growth of bacteria in the mash without reducing yeast populations; and reducing and/or eliminating a microbial population of yield loss organisms in said fermentation system.