Trace minerals in commercially prepared baby foods.

Five categories of strained baby foods were analyzed for iron, copper, zinc, magnesium, manganese, strontium, and cadmium. Meats, egg yolk, and cerals tended to have the highest concentrations of iron, copper, and zinc. Fruits and vegetables had lower contents of these minerals. Cereals and vegetables were the best sources of magnesium and manganese. Strontium and cadmium levels were consistently low.