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Acid or acidity regulator

E529 (calcium oxide): what it is, its sources, vegan or not

E529 is calcium oxide, an acidity regulator. E529 comes from minerals. Vegan and vegetarian profiles get Fits you.

By Bravoora teamUpdated Sources checked 4 sourcesHow we check

Fits you

for a vegan profile

E529=minerals

What is E529?

E529 (calcium oxide) is an acidity regulator, an additive that adds acidity or a sour taste to a food, or controls how acid it is.

What is E529 made from?

E529 comes from minerals.

  • Minerals

Is E529 vegan?

Fits you. E529 comes from minerals. Nothing from an animal.

What the app says to each profile, and the reason it shows.

VeganFits youE529 comes from minerals. Nothing from an animal.
VegetarianFits youE529 comes from minerals. Nothing from an animal.

What other names does E529 have on a label?

On a label, E529 can also appear as “INS 529”, “Acidity regulator (529)”, “Acidity regulator (E529)”, “Calcium oxide” or “Quicklime”.

Any of these on a pack means E529. The checker reads them all.

E529E 529E-529INS 529Acidity regulator (529)Acidity regulator (E529)Calcium oxideQuicklime

What would change the answer for E529?

For E529, only the ingredient list itself: a code the camera cannot read gets Needs one more scan, and the app never guesses a code it cannot see.

Sources: EU, US and Codex additive rules

Where additives are listed and approved. Bravoora reads the source and the diet; it does not rate the hazard.

  1. EU Regulation 1333/2008 on food additives (the E-number list)
  2. EU Regulation 1169/2011, Annex II: the allergen sources a label must name
  3. US FDA: Food Additive Status List
  4. FAO/WHO Codex: General Standard for Food Additives (GSFA) online

Names and classes cross-checked with Open Food Facts (Open Database License).

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