Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by property]
6. acid

Anotations

Scope note:

Acid that occurs in sour milk as a thick water-soluble liquid. It is induced by bacterial decomposition of sugar, a process of fermentation; it may also be found in molasses, many fruits, beer and wine. Lactic acid is used in dyeing and leather processing.