A method for controlling lactic acid bacteria contamination in a process medium used in the production of fuel ethanol

摘要

A method for controlling lactic acid bacteria contamination in a process medium used in the production of fuel ethanol comprising:adding an aqueous alkaline solution of hop acid to a process medium having a pH less than the pH of the alkaline hop acid solution,wherein the hop acid is selected from at least one of the group consisting of alpha acids, beta acids, isoalpha acids, rho-isoalpha acids, tetrahydroisoalpha acids and hexahydroisoalpha acids and salts thereof.