Brazilian industrial yeasts show high fermentative performance in high solids content for corn ethanol process

Abstract An imminent change in the world energy matrix makes it necessary to increase production of renewable fuels. The United States and Brazil are world's largest producers, but their methods very different, using different raw materials, ground corn sugarcane juice, respectively. In recent years, strong investments have been made expand use Brazilian ethanol production. combination sugar cane industries has generated innovations sector, such as "flex" mills, which traditional mills adapted produce off-season. a portfolio robust industrial yeasts for production, naturally evolved selected over past 50 years. this work, we analyze first time performance strains (BG-1, CAT-1, PE-2 SA-1, widely used production) stress conditions. Ethanol Red yeast, traditionally plants around world, was control. terms tolerance temperature (35 °C), BG-1 SA-1 stood out. fermentations with high solids concentration (35%), strain reached contents higher than 19% w/v had productivity gain 5.8% compared fermentation at 30%. This that these were evaluated 35% results point ways improve process. Graphical