Is e132 indigotine vegan?

E132 indigotine, commonly known as indigo carmine, is a synthetic blue food dye used to add color to various processed foods and beverages. While the pigment indigo was historically extracted from the leaves of the indigo plant, commercial e132 is manufactured through chemical synthesis. It is created by the sulfonation of synthetic indigo, a process that converts petroleum-derived raw materials into a water-soluble dye. Food manufacturers frequently add it to confectionery, ice creams, soft drinks, baked goods, packaged snacks, and pharmaceuticals to impart blue, violet, or green hues when combined with yellow colorants.

This ingredient is classified as vegan because it is of strictly synthetic origin and contains no animal products. No animal tissues, animal-derived enzymes, or processing aids from animal sources are utilized during its chemical manufacturing process. Because modern industrial production relies exclusively on synthetic inputs, e132 indigotine is completely free of animal derivatives.