How we scored it
Plant-cell biomass is built from sucrose and mineral salts in the medium (n = 1), so natural fraction = 1.0. Trace synthetic growth regulators and vitamins in the medium leave no counted mass.
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
Plantago major callus is grown in flasks or bioreactors on a sucrose and mineral medium, then extracted and filtered. The medium usually holds small amounts of synthetic plant hormones, which contribute only trace mass.
In plain English
An extract of plant cells (callus) of greater plantain (Plantago major), grown in a laboratory nutrient medium rather than harvested from fields. It is used in skin-care products as a skin-conditioning ingredient. The cells are built from the sugar and minerals in the growth medium.
CosIng definition: Plantago Major Callus Culture Extract is the extract of a culture of the callus cells of Plantago major L., Plantaginaceae
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.
- 2PLANTAGO MAJOR CALLUS CULTURE EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3PLANTAGO MAJOR CALLUS CULTURE EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PLANTAGO%20MAJOR%20CALLUS%20CULTURE%20EXTRACT