Tanning:
Tanning is the process to make the leather usable. It is the process in which the putrelfiable nature of hide/skin is changed & make permanent resistant to bacterial growth.
Tanning agents:
1. Mineral tanning agents: Cr, Al, Zn
2. Vegetable tanning agents: Tannin
3. Aldehyde tanning agents: Formaldehyde, Glutenaldehyde.
4. Oil tanning agents: Fish oil, Cod oil.
5. Synthetic tanning agents.
Vegetable Tanning:
Vegetable tanning is the process by which the previously conditioned pelt is treated with aqueous infusion of tree barks, pods, fruits, roots & made it imputrescible