A 100% actives polyglycol, designed for high-performance foam control during the sugarcane alcoholic fermentation process to produce bioethanol. Due to its unique physical-chemical characteristics, FLUENT-CANE™ 155 Polyglycol can be used both as defoaming and antifoaming agent depending on the fermentation process conditions. It is a flexible product to be used alone or in combination with other Dow polyglycols to prevent foam formation or break foam, improving the overall process conditions, while bringing safety, quality and productivity to the biorefinery.