Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by form]
6. [materials by chemical form]
7. compounds (materials)
8. polysaccharides

Anotations

Scope note:

A family of anionic polysaccharides that are obtained by alkaline extraction from some species of red seaweeds. There are three major types of carrageenan, which include iota-carrageenan (i-carrageenan), kappa-carrageenan (κ-carrageenan), and lambda-carrageenan (λ-carrageenan). In conservation, it is used as a hydrogel in paintings consolidation, among other uses.