Fig. 10From: A courtly brocade belt belonging to Qajar period (1789–1925), Iranstereomicroscopic photograph of follicle pattern on leather surface (a); Flowchart to identify tannin type based on FTIR spectrum peaks (b); FTIR spectrum of leather extracts with the position of the highlighted peaks of tannins, hydrolysable tannins, and gallotanninsBack to article page