The process of “tanning” an animal hide derives its name from the plant tannins originally used. The following content is accessible for members only, please sign in.

Since Neolithic times (approximately 12,000 years ago), tannins derived from the bark of specific trees (the word “tanning” is derived from the Gaulic tannum, meaning “oak bark”) were used to prevent the spoilage of animal skins.  Plant tannins have antimicrobial properties which help to preserve the hide, and astringent properties that draw out moisture—turning the hide into durable leather. An alternative method of “tanning” hides developed during the Industrial Revolution of the 1800’s, introduced the use of chromium salts instead of natural tannins.