Is e579 vegan?

E579 is the European food additive code for ferrous gluconate, an iron salt of gluconic acid. It is produced synthetically through the chemical reaction between gluconic acid and inorganic iron compounds, such as ferrous carbonate or elemental iron. The gluconic acid used in this process is typically produced via the microbial fermentation of plant-derived glucose, commonly sourced from corn starch. Ferrous gluconate primarily serves as a color retention agent and a nutrient. It is most widely found on the ingredient lists of canned black olives, where it darkens and stabilizes the color of the fruit, as well as in fortified breakfast cereals, drink mixes, and iron supplements.

E579 is classified as vegan because its production relies entirely on mineral, synthetic, and plant-derived materials. No animal tissues, animal byproducts, or animal-derived processing aids are utilized during the manufacturing of ferrous gluconate. Therefore, this additive is suitable for individuals following a vegan diet.