Compositions for food quality preservatives, inks for food quality preservatives, food quality preservatives, methods for detecting food quality preservatives, and methods for inspecting food packages.

摘要

To provide a method of detecting a food quality-keeping agent in a food package, and a method of inspecting the food package. This invention relates to a method of detecting a food quality-keeping agent, etc., in a food package in which the food quality-keeping agent containing a magnetized body is sealed, the method including: a step of magnetizing the magnetized body or reinforcing the magnetic force of the magnetized body; and a step of detecting the magnetized body that has been magnetized or reinforced in its magnetic force and detecting presence or absence of the food quality-keeping agent.