METHOD FOR MANUFACTURING EDIBLE OIL DETERIORATION PREVENTING MEMBER AND EDIBLE OIL DETERIORATION PREVENTING MEMBER

摘要

An object of the present invention is to provide a member useful for preventing deterioration of cooking oil by a process having simplicity, economy and safety. A method for producing an edible oil deterioration preventing member, comprising the steps of: (1) heating a metal titanium material or a metal titanium material by a single treatment method selected from the group consisting of a heat treatment at a heating temperature of 750 ° C or higher and a heating treatment in an ammonia gas atmosphere and a heat treatment under a nitrogen gas atmosphere (2) a step of forming a titanium or titanium alloy material having titanium nitride on its surface, which is obtained in the step (1), in an electrolyte solution not having an etching effect on titanium, (3) a step of subjecting the metallic titanium material or the titanium alloy material, which is obtained in the step (2) and on which an oxide film of titanium is formed on the surface, Atmosphere, an atmosphere in which an oxygen gas and a nitrogen gas are mixed, or an oxygen gas atmosphere, Or more at a temperature higher than the melting point of the cooking oil.