... Liquid food colorant Curcumin is brightly colored and may be used as a food coloring. As a food additive, its ... composition is curcumin and turmeric oil. As a food colorant, it can be used in meat, farm products, ... Oleoresin. It can disperse in water. As a food colorant, it can be used in noodle, candy, cake, ... Oleoresin. It can disperse in oil. As a food colorant, it can be used in bread, egg products, ...