The Simple Natural Indigo fabric test kit by Column Chromatography

Abstract

Indigo fabric has blue or indigo color from various sources such as natural, synthesized indigo dyes and other blue dye. From the varieties of indigo color sources, determination of major chemical composition by Chromatography technique, UV-visible spectroscopy and Fourier transforms infraredspectroscopy found that the main colors obtained in the natural indigo fabric were blue and red of indigo blue and indirubin, respectively. Meanwhile, the synthesized indigo fabric has only indigo blue, and indirubin was not found. From these results, this research invented a simple test-kit for identify the kinds of indigo fabric. Moreover, this test-kit is inexpensive, and easy to use when compared with the complicate scientific instrument.