Is it vegan? Additives & E-numbers E1105

Is lysozyme vegan?

Not vegan

Quick answer: No. Lysozyme (E1105) is an enzyme extracted from hens’ egg white, so it is not vegan.

Also called: E1105, egg lysozyme

Why it isn’t vegan

Lysozyme is an antibacterial enzyme used as a preservative, especially in some hard cheeses and in winemaking. Food-grade lysozyme is produced from hens’ eggs, as described in EFSA’s evaluation of lysozyme as a food enzyme. As an egg derivative, it must be declared as an allergen in the EU and UK.

What to look for on the label

  • E1105
  • lysozyme
  • lysozyme (egg)

Where it’s found

  • Some hard and semi-hard cheeses
  • Some wines

Vegan alternatives

  • Vegan cheese
  • Vegan-certified wines

Frequently asked questions

Is lysozyme vegan?

No. Lysozyme (E1105) is an enzyme extracted from hens’ egg white, so it is not vegan.

Sources

  1. Approved additives and E numbers — Food Standards Agency (UK)
  2. Safety evaluation of the food enzyme lysozyme from hens’ eggs (2025) — EFSA Journal
  3. Regulation (EU) No 1169/2011 on food information to consumers (allergen labelling, Annex II) — EUR-Lex

Checked on 31 October 2026. Ingredients and recipes change, and the same product can differ between countries — always check the current label. This page is general information, not allergy or medical advice.

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