Abstract: A process for obtaining a polymeric complex from a by-product effluent obtained in a process for manufacturing alcohol by distilling a fermented aqueous sugar solution containing yeast. After distilling alcohol from the effluent a chemical or biological flocculant is added to the effluent to form a homogeneous mixture, which is heated to a temperature of at least about 80° C. Yeast is removed from the heated mixture by a first decantation, then insoluble solids and muds are removed by a second decantation. The mixture is then concentrated by partially evaporating water therefrom to obtain an aqueous solution of the polymeric complex.