The invention relates to a polyurethane obtainable by reacting a polyisocyanate and a polyol composition comprising a highly branched polysaccharide of randomly bonded glucopyranose units or an alkoxylated derivative of the same. A flow of feed stock to the cell includes an electrolysis reactant at a controlled concentration. The incorporation of the compound can be particularly useful for inhibiting color fading of the beverage product under thermal stress.