Is Xanthan Gum (E415) Vegan?

Vegan status: Vegan

E-number: E415

Also known as: Xanthomonas campestris polysaccharide

Source

Produced by bacterial fermentation — specifically, the bacterium Xanthomonas campestris fermenting a carbohydrate substrate (typically corn sugar or glucose). Entirely microbial in origin.

Commonly found in

Gluten-free bread and baked goods, salad dressings, sauces, ice cream, plant-based products. The primary gluten substitute in gluten-free baking.

Vegan alternative: No substitute needed — E415 is vegan.

Notes

The bacteria Xanthomonas campestris is the same organism responsible for 'black rot' disease in brassicas. The fermentation product is completely safe — the bacteria are removed after fermentation. Xanthan gum is the gold standard for gluten-free baking because it replicates gluten's viscoelastic properties. Some rare individuals experience digestive sensitivity.