Litholrubine BK
The short version
A synthetic red lake pigment — restricted in the EU to the inedible coatings of hard cheeses.
It's permitted and generally considered safe, but there are a few reasons to be mindful — like sensitivities in some people, debated studies, or intake limits. The Safety section below explains the specifics.
Where it comes from
A synthetic azo-naphthalenesulfonate pigment, manufactured as the calcium lake form. Primarily used in non-food applications (printing inks, plastics). The food authorization is narrow and specific.
How it's used
In the EU, permitted only for the surface coating of hard cheeses (Edam, Gouda) — the bright red wax rind is the typical use. The coating is mechanically removed before consumption. Not approved for direct food incorporation.
Safety profile
ADI of 0–1.5 mg/kg body weight (EFSA 2010, narrowed). Because the cheese-rind use is non-edible, dietary exposure is minimal. Concerns center on potential azo-cleavage products if the coating were eaten directly.
Physical & chemical properties
Bright red insoluble pigment powder. Insoluble in water and oils; very stable as a particulate dispersion in wax.
Regulation worldwide
Permitted in the EU only for hard-cheese surface coatings. Not approved for food use in the US or most other jurisdictions.
Educational information only. Not medical or dietary advice.