A defoamer agent polyglycol specially designed for foam control during the sugarcane fermentation process in the bioethanol industry, bringing safety, quality and productivity to this process. FLUENT-CANE™ 152 Polyglycol is the product of choice when a defoamer with FDA indirect food contact approval for certain applications is needed. Its very low cloud point, increased hydrophobicity and low surface tension produces are very good defoaming agent for fermentation processes, presenting excellent foam knock-down effect at various conditions. Combined with Dow dispersant agents, it creates a reliable foam control package for bioethanol production and other fermentation processes.