The present invention addresses the problem of providing a food sterilization and preservation method whereby a mycotoxin can be eliminated from a food and the recurrence of the mycotoxin can be prevented even during prolonged preservation. For the purpose of solving the problem, provided is a method for eliminating a mycotoxin, said method comprising: a water vapor plasma irradiation step for irradiating water vapor plasma to a food that is contaminated with the mycotoxin and a step for applying a powder of a calcined natural calcium material to the food that has been treated in the water vapor plasma irradiation step.
