Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. organic material
7. carbohydrate
8. sugar

Anotations

Scope note:

Crystalline sugar, a disaccharide, stored instead of starch in some fungi, algae, and insects. Industrially manufactured trehalose has been used in combination with lactitol as a sugar-alcohol saturation treatment in the conservation of archaeological waterlogged wood.