alexa Dyeing Properties and Analysis by Rp-Hplc-Dad of Silk Fabrics Dyed with Madder (Rubia tinctorum L.)

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Dyeing Properties and Analysis by Rp-Hplc-Dad of Silk Fabrics Dyed with Madder (Rubia tinctorum L.)

Natural dyes are obtained from dye plants and dye animals in nature. They were the primary colour source of textiles until the mid - to late 19th century]. For a long time, natural dyes have been used for purposes such as the colouring of wool, mohair, cotton and silk fibres as well as fur and leather [. Anthraquinones, naturally occurring in the madder roots (Rubia tinctorum L.), have been used for dyeing fabrics or fibres especially to the colour red and they have also been used as a lake pigment rarely since ancient times .In addition to their antioxidant, antimicrobial, antifungal and hypotensive effects; anthraquinones have also been known for their various effects such as anticancer and skin diseases . Madder (Rubia tinctorum L.) and other alizarin-containing plants belong to the most important group of red dyestuffs found in nature all over the world. Many of these belong to the large plant family of the Rubiaceae [. The dye plant is mentioned in early literature on dyeing and textiles dyed with a madder type, dated to 3000 BC, have been found in Mohenjo-Daro in the Indus valley. Madder type dyestuffs belong to the group of mordant dyes which need a pre-treatment with a metal salt. The metal salts most in use are alum compounds

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