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Sodium erythorbate (C6H7NaO6) is a food additive used predominantly in meats, poultry, andsoft drinks. Chemically, it is the sodium salt of erythorbic acid. When used in processed meat such as hot dogs and beef sticks, it increases the rate at which nitrite reduces to nitric oxide, thus facilitating a faster cure and retaining the pink coloring. As anantioxidant structurally related to vitamin C, it helps improve flavor stability and prevents the formation ofcarcinogenicnitrosamines. When used as a food additive, its E number is E316.