Tanning (leather)
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Tanning, or hide tanning, is the process of treating skins and hides of animals to produce leather. A tannery is the place where the skins are processed.
Tanned leather
Tanning, 1880
Tanner, Nuremberg, 1609
Peeling hemlock bark for the tannery in Prattsville, New York, during the 1840s, when it was the largest in the world
Tannin
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Tannins are a class of astringent, polyphenolic biomolecules that bind to and precipitate proteins and various other organic compounds including amino acids and alkaloids. The term tannin is widely ap
Tanning (leather)
…treating skins and hides of animals to produce leather. A tannery is the place where the skins are processed. Historically, vegetable based tanning used tannin, an acidic chemical compound derived from the bark of certain trees, in the production of leather. An alternative method, developed in the 1800s, is…
Tannin powder (mixture of compounds)
Tannin-rich fresh water draining into Cox Bight from Freney Lagoon, Southwest Conservation Area, Tasmania, Australia
Bog-wood (similar to, but not, driftwood) in an aquarium, turning the water a tea-like brown
A mute swan with reddish-brown staining on the top of its head, caused by exposure to dissolved tannins and iron compounds in water