The present invention provides an anti-fungal agent for processed grain foods, and the anti-fungal agent contains chitinase. The present invention also provides an anti-fungal agent-containing processed cereal food containing the anti-fungal agent. The present invention further provides a method for producing an antifungal agent-containing processed cereal food. According to the present invention, a safe and inexpensive antifungal agent for processed grain food is provided.本発明は、穀物加工食品用抗カビ剤を提供し、該抗カビ剤は、キチナーゼを含有する。本発明はまた、該抗カビ剤を含む抗カビ剤含有穀物加工食品を提供する。本発明はさらに、抗カビ剤含有穀物加工食品の製造方法を提供する。本発明によれば、安全かつ安価な穀物加工食品用抗カビ剤が提供される。