TECHNOLOGY FOCUS - BIOLOGY - Preferred Method: The method further comprises: adding nutrients to at least one of the inoculant, fermentable sugar and processing water or directly to the vessel; contacting the stabilized chlorine dioxide and peroxide compound prior to the step of the fermentation process; or adding stabilized chlorine dioxide and peroxide compound to the product of the contacting step. The stabilized chlorine dioxide and peroxide compound are added: separately to at least one step of the fermentation process; and into the inoculant, fermentable sugar or processing water prior to introducing the inoculant, fermentable sugar or processing water into the vessel. The fermentation process is a: batch fermentation, and the stabilized chlorine dioxide and peroxide compound re added to the vessel prior to adding the sugar into the vessel; or continuous process, and stabilized chlorine dioxide and peroxide compound are combined and added as a single composition to the yeast propagation step to obtain the yeast inoculum, or during the contacting step of the fermentation process. The step of providing the fermentable sugar comprises producing and storing a carbohydrate feedstock, and the stabilized chlorine dioxide and peroxide compound are added to the feedstock, where the feedstock comprises the fermentable sugar and the carbohydrate content of the feedstock is at least 1 wt.%, preferably 1-70 wt.% based on the total feedstock weight, and the stabilized chlorine dioxide is added at 10-1000 ppm, and the peroxide compound is added at 50-500 ppm, based on the total weight of the feedstock. The method further comprises: separating ethanol from the product of the contacting step, which comprises ethanol to provide a remaining product, where the remaining product is fed into a beer-well or a thin stillage tank; and adding the stabilized chlorine dioxide and peroxide compound to the beer-well or thin stillage tank. Preferred Components: The inoculant is a yeast inoculum prepared by mixing a yeast starter culture and a nutrient composition in a propagation tank. The sugar is derived from corn using a dry grind process or a wet mill process. The sugar is sugarcane- or sugar beet- or molasses-based sugar. The feedstock is a sugar-based feedstock, or a cellulose feedstock.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The stabilized chlorine dioxide is a chlorine dioxide-containing oxy-chlorine complex comprising a complex of chlorine dioxide with carbonate and/or a complex of chlorine dioxide with bicarbonate. The stabilized chlorine dioxide is a metal chlorite, which is sodium chlorite. The peroxide compound is hydroperoxide, organic peroxide, inorganic peroxide or peroxygen-releasing compound, preferably hydroperoxide or hydrogen peroxide. The concentrations of the stabilized chlorine dioxide and peroxide compound are added each at a concentration of 0.0002-5% of the total volume of the fermentation broth. EXAMPLE - No suitable example given.