The study of different methods of alizarin extraction from Madder for application in dyeing of handmade carpet

Madder plant is a self- willed plant that has been used to attain the red shade of carpet industry since its earliest years. The roots of this plant contain anthraquinone derivatives that are soluble in water. In the root of Madder, alizarin with red shade and purpurin (orange and yellow) shade, which is widely used in cosmetic and food industries, and especially in the dyeing of handmade carpets. The widespread use of alizarin in the industry and the huge cost that imports of this pigment has imposed on the country's industry. In this research, the aim of this study is to investigate the use of alizarin and pyopurupurine by high performance liquid chromatography (HPCL) from Rhinos root. Then the dyeing of the wool product is performed and finally the color components, color strength, optical stability and washing of the samples are evaluated. The results of color strength of the samples show that the light and washing fastness of the sample are very good, as well as the color strength of the samples in direct and indirect extraction.

کلیدواژه ها:

Extraction of alizarin ، Dyeing ، HPLC ، Color strength