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zinc oxide is an inorganic compound with the formula ZnO. It usually appears as a white powder, nearly insoluble in water. The powder is widely used as an additive into numerous
materials and products including foods (source of Zn nutrient)
Zinc oxide is added to many food products, e.g., breakfast cereals, as a source of zinc,a necessary nutrient. (Other cereals may contain zinc sulfate for the same purpose.) Some
prepackaged foods also include trace amounts of ZnO even if it is not intended as a nutrient.