Tannin
Tannins are bitter-tasting chemical compounds that bind proteins. Tannins are present in the following:
Tannins are also used in the treatment of leather, to make it more durable. Natural tannins for this purpose come from oak trees, but synthetic tannins are more used.
Tannin Media
Tannic acid, a type of tannin
Tannin powder (mixture of compounds)
A bottle of tannic acid solution in water
2D structure of gallic acid
chemical structure of phloroglucinol
Chemical structure of flavan-3-ol (3-flavanol)
Strawberries: Late season, slightly over-ripe strawberries.
Tannin in a plastic container
