Lysozyme

INS 1105

Used as a preservative.

Lysozyme is an antibacterial enzyme from egg white, used to stop late blowing in hard cheeses and as a preservative in wine. It is not vegan, and because it comes from egg it is an allergen that must be declared.

Where it is and isn’t permitted

Status of Lysozyme by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationNot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.
Codex AlimentariusCodex Alimentarius Commission / JECFAPermitted, with conditions

3 food categories

highest permitted level 500 mg/kg

Show every food category
  • 01.6.2 Ripened cheese — GMP
  • 14.2.2 Cider and perry — 500 mg/kg
  • 14.2.3 Grape wines — 500 mg/kg
CXS 192-1995 Table One, INS 1105and 2 further provisionsretrieved 2026-09-07

What it is made from

Extracted from hen egg white, where it occurs naturally as part of the egg's own defence against bacteria.

  • Not vegan
  • Vegetarian
InChIKey
ZJCXKXFAOCLSRV-UHFFFAOYSA-N
PubChem
CID 91976556

Every name it appears under

36 recorded names. A label may use any of them.

INS number

  • 1105

CAS registry number

  • 12650-88-3
  • 9001-63-2

Other names

  • 1,4-N-ACETYLMURAMIDASE
  • 1ZML031Y3C
  • 968JKA7T33
  • Delvozyme
  • Globulin G
  • Globulin G1
  • Glycanhydrolase, N-Acetylmuramide
  • H-DL-Arg-DL-Val-DL-Val-DL-Arg-DL-Asp-DL-Pro-DL-Gln-Gly-DL-xiIle-DL-Arg-DL-Ala-DL-Trp-DL-Val-DL-Ala-DL-Trp-DL-Arg-DL-Asn-DL-Arg-OH
  • Hen Egg Lysozyme
  • HEN EGG LYSOZYME (REDUCED)
  • Hen Muramidase
  • Hen N-Acetylmuramyl Hydrolase
  • INS NO.1105
  • LYSOZYME
  • Lysozyme (chicken egg white)
  • Lysozyme (DCF)
  • Lysozyme from chicken egg white
  • LYSOZYME FROM CHICKEN EGG WHITE (ENZYME ACTIVITY MIN 20000U/MG)
  • Lysozyme G
  • Lysozyme hydrochlorideMuramidase
  • Lysozyme, Egg White
  • Lysozyme,from egg white
  • Lysozymum
  • Mucopeptide glucohydrolase
  • MURAMIDASE
  • N Acetylmuramide Glycanhydrolase
  • N,ODiacetylmuramidase
  • N-Acetylmuramide Glycanhydrolase
  • N-ACETYLMURAMIDE GLYCANOHYDROLASE
  • N-ACETYLMURAMYL HYDROLASE
  • NAcetylmuramide glycanohydrolase
  • NAcetylmuramyl hydrolase
  • Peptidoglycan N-acetylmuramoylhydrolase

Hazard reference values

No reference value for this substance in the sources we hold.

Evidence and how bodies read it

Studies, and the differing conclusions regulators drew from them, are curated by hand rather than machine-read, and none has been written for this substance yet.

Sources for this page

  • gsfa retrieved 2026-09-07

Full licence terms and publisher details on Sources. How this page is built and updated: Method.

Machine-readable:/api/v1/additives/lysozyme.json