INS 1105 is the code for lysozyme
An enzyme that breaks down bacterial cell walls, used to stop late blowing in ripened cheese and occasionally in wine. It is extracted from hen egg white, which is the whole reason it appears in this rulebook.
- What it does
- Keeps it from spoiling A preservative
- Also printed as
- Lysozyme hydrochloride
- Vegetarian?
- Not vegetarian From animals
- In the Zabel score
- 2 of the 20 additive points Method 1.0.0
- In our catalogue
- 0 packs List it in their ingredients
Is INS 1105 vegetarian?
INS 1105 is made from animal material, so it is not vegetarian. A pack that lists it should carry the brown mark.
Too few packs in our catalogue list INS 1105 for a breakdown by food to mean anything yet. We print one once at least 20 categorised packs carry it.
What does the evidence say about INS 1105?
We grade an additive by the evidence about it, not by whether it sounds like a chemical, and we make no claim about whether a pack complies with FSSAI rules.
No general toxicological concern; JECFA and EFSA have both evaluated it without setting a numeric limit. It matters for one group of people and it matters a great deal to them: it is an egg protein, and residues are enough to provoke a reaction in somebody with an egg allergy. EU rules require it to be declared as an egg-derived ingredient for exactly that reason. It also makes a pack non-vegetarian under the Indian definition.
Does Zabel mark INS 1105 down?
Yes, by 2 points. The additives part of the score starts at 20, and each code takes off a fixed amount set by the strength of the evidence about it, not by the fact that it is an additive (method 1.0.0). Read the method.
Questions people search
What is INS 1105?
INS 1105 is the code for lysozyme, a preservative. An enzyme that breaks down bacterial cell walls, used to stop late blowing in ripened cheese and occasionally in wine. It is extracted from hen egg white, which is the whole reason it appears in this rulebook.
Is INS 1105 vegetarian?
INS 1105 is made from animal material, so it is not vegetarian. A pack that lists it should carry the brown mark.
What does the evidence say about INS 1105?
No general toxicological concern; JECFA and EFSA have both evaluated it without setting a numeric limit. It matters for one group of people and it matters a great deal to them: it is an egg protein, and residues are enough to provoke a reaction in somebody with an egg allergy. EU rules require it to be declared as an egg-derived ingredient for exactly that reason. It also makes a pack non-vegetarian under the Indian definition.
Does Zabel mark INS 1105 down?
Yes, by 2 points. The additives part of the score starts at 20, and each code takes off a fixed amount set by the strength of the evidence about it, not by the fact that it is an additive (method 1.0.0).
What other names is INS 1105 printed under?
Packs also print it as Lysozyme hydrochloride, or as the bare number 1105 in brackets after the ingredient.
Sources
- 01 General Standard for Food Additives (CXS 192-1995) Codex Alimentarius, 2023
- 02 Evaluations of the Joint FAO/WHO Expert Committee on Food Additives (JECFA) WHO / FAO, 2024
- 03 Food Safety and Standards (Labelling and Display) Regulations, 2020 FSSAI, 2020
- 04 Zabel catalogue - pack counts, food categories and the codes printed alongside 4 Nov 2026
Entry updated 19 Sep 2026 · Not reviewed by a dietitian yet · Report an error on this page
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