Various food products may be treated with an aqueous antimicrobial solution that includes a quaternary ammonium compound and an acidifying agent. Treatment may include spraying or submerging the food product in the solution. The acidifying agent may be present in the solution in an amount effective to provide the solution with a desired acidic pH value. Some solutions may include an acidifying agent that includes a generally recognized as safe (GRAS) acid. Some solutions may include additional components, such as a solubility agent.
