• Gloria Christal L

Many raw materials like fibres, employs either natural or chemical dyes for dyeing. Synthetic dyes are famous for their features like adhesion & resistance towards washing & chemicals but are marred by its mutagenic property on the environment. Natural dyes obtained from the natural world are not only quite tolerant to washing, having shown good adhesion and longevity is also environment friendly. In order to obtain information about the history and methods with types of natural dyes used, many analytical methods have been utilized. One of the natural dyes of historical importance is Indigo which is found in 3 forms, Indigo, Indirubin & the leuco or colourless form. The aim of this review paper is to have a brief understanding of the various detection methods for natural dyes in historical textiles and to understand how these techniques can be used for detection of the various forms and isomers of natural Indigo.

Chromatography, Fibres, Mass spectrometers, Natural dyes, Synthetic dyes, Textiles

"Detection of Natural Dyes: Historical Importance of Indigo", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.259-267, February-2019, Available :http://www.jetir.org/papers/JETIREV06041.pdf

"Detection of Natural Dyes: Historical Importance of Indigo", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp259-267, February-2019, Available at : http://www.jetir.org/papers/JETIREV06041.pdf