An evaluation of the catechol lipid compositions of natural lacquer materials and their
correlation with the physicochemical properties of lacquer films have become important
issues for the advancement of natural lacquer technologies. Here, a convenient method for
evaluating the relative composition of urushiol and laccol catechol lipids in natural lacquers
using Fourier transform infrared (FT-IR) analysis is proposed. Urushiol and laccol exhibited
different characteristic peaks in the FT-IR spectrum owing to the different stereoisomer …