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... > Chemical Actions and Uses > Specialty Uses of Chemicals > Biomedical and Dental Materials > Polymers > Biopolymers > Tannins
... > Technology, Industry, and Agriculture > Manufactured Materials > Biomedical and Dental Materials > Polymers > Biopolymers > Tannins
Macromolecular Substances > Polymers > Biopolymers > Tannins
... > Organic Chemicals > Hydrocarbons > Hydrocarbons, Cyclic > Hydrocarbons, Aromatic > Benzene Derivatives > Phenols > Polyphenols > Tannins

Preferred term

Tannins  

Type

  • Topical Descriptor

Broader concept

Narrower concepts

Entry terms

  • Tannin

Note

  • HYDROLYZABLE TANNINS is also available

Scope note

  • Polyphenolic compounds with molecular weights of around 500-3000 daltons and containing enough hydroxyl groups (1-2 per 100 MW) for effective cross linking of other compounds (ASTRINGENTS). The two main types are HYDROLYZABLE TANNINS and CONDENSED TANNINS. Historically, the term has applied to many compounds and plant extracts able to render skin COLLAGEN impervious to degradation. The word tannin derives from the Celtic word for OAK TREE which was used for leather processing.

History note

  • 2022 (1966)

In other languages

URI

http://www.yso.fi/onto/mesh/D013634

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