How we scored it
Curcumin extracted from turmeric rhizome (Curcuma longa); commercial supply is solvent extraction, not chemical synthesis; all carbon traces to turmeric.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.
Where it comes from
CI 75300 (Curcumin) is extracted from the dried rhizome of turmeric (Curcuma longa) by solvent extraction, the standard commercial route. Chemical synthesis exists but is not commercially significant given cheap turmeric feedstock.
In plain English
The bright yellow pigment from turmeric root, used to add colour to cosmetics. It is extracted directly from the spice, the same source used in cooking.
CosIng definition: CI 75300 is classed chemically as a curcuminoid colour. It conforms to the formula:
Structure
(1E,6E)-1,7-bis(4-hydroxy-3-methoxyphenyl)hepta-1,6-diene-3,5-dione
References
- 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
- 2CI 75300. PubChem CID 969516. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3CI 75300. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4CI 75300. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2075300