A masterbatch of dried distillers solubles and at least one thermoplastic resin and processes for forming the masterbatch, wherein the dried distillers solubles is greater than 70% by weight of the masterbatch are generally disclosed. The masterbatch generally includes compounding a mixture of dried distillers solubles and at least one thermoplastic resin to form a flowable solid medium, wherein the dried distillers solubles is greater than 70% by weight percent based on a total weight of the mixture and has a moisture content of less than 25% by weight of the dried distillers solubles. The article can then be formed by melt processing, direct injection molding or extruding the flowable solid medium (masterbatch) with an additional amount of at least one thermoplastic resin to form the article, wherein the article comprises dried distillers solubles in an amount of less than 50 weight percent based on a total weight of the article.