Food processing apparatus and method of operating food processing apparatus

A method of operating a food processing apparatus,

• the apparatus including
• a reaction tank that contains a reaction liquid including a food ingredient,
• a reaction pipe that is disposed in the reaction tank and on whose outer surface a photocatalyst is provided,
• a light source that irradiates the photocatalyst with light from inside of the reaction pipe, and
• a dissolved oxygen concentration measurer that measures a dissolved oxygen concentration in the reaction liquid,
• the method comprising:
• stopping light irradiation from the light source if a measured dissolved oxygen concentration exceeds a preset first dissolved oxygen concentration.

A method of operating a food processing apparatus,

• the apparatus including
• a reaction tank that contains a reaction liquid including a food ingredient,
• a photocatalyst that is disposed in the reaction tank,
• a light source that irradiates the photocatalyst with light, and
• a dissolved oxygen concentration measurer that measures a dissolved oxygen concentration in the reaction liquid,
• the method comprising:
• stopping light irradiation from the light source if a measured dissolved oxygen concentration exceeds a preset first dissolved oxygen concentration.