Controlling microbial contamination in alcoholic fermentation process
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United States of America Patent
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Oct 14, 2014
Grant Date -
Jan 12, 2012
app pub date -
Feb 11, 2010
filing date -
Feb 12, 2009
priority date (Note) -
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Abstract
The control of the microbial contamination during the sugar fermentation in the processes for obtaining alcohol is a very important action to increase the productivity of the alcoholic fermentation processes. The Saccharomyces cerevisiae yeast cells engage a very tough nutritional competition for the sugarcane juice with the bacteria (Lactobacillus sp and Acetobacter) and the wild yeasts. The proposed composition uses an antimicrobial agent of the guanidine family, such as for example, poly(hexamethyl biguanide), an antibiotic agent, and also a surfactant agent, to prevent the undesired microbial growth. The present invention further refers to the process for controlling the microbial contamination through the use of said agents.
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