Is e578 vegan?

E578 is the European food additive code for calcium gluconate, a mineral salt composed of gluconic acid and calcium. It is produced industrially by neutralizing gluconic acid with an inorganic calcium base, such as calcium carbonate or calcium hydroxide. The gluconic acid itself is created through the aerobic fermentation of plant-derived glucose, commonly sourced from corn, using microbial cultures such as Aspergillus niger. The calcium compounds are extracted from natural mineral deposits. In food manufacturing, calcium gluconate functions primarily as a firming agent, acidity regulator, stabilizer, and nutrient fortifier in items such as canned vegetables, packaged baked goods, dessert mixes, and fortified plant milks.

E578 is classified as vegan because its synthesis relies entirely on mineral, plant, and microbial origins. The fermentation stage uses plant carbohydrates, and the subsequent neutralization uses quarried mineral salts rather than animal matter. Because no animal tissues, byproducts, or animal-derived processing aids are utilized during its manufacturing, E578 is suitable for a vegan diet.