6533b7d2fe1ef96bd125e9f7

RESEARCH PRODUCT

Applying the Techniques on Materials I

subject

description

The knowledge of the composition of the natural dye mixtures gives hints on appropriate procedures for restoration strategies. Identification of the dyes used, the establishment of their biological source, how they have been prepared, how these historical textiles were made, can provide important information. The dyestuffs used up to nineteenth century were either of plant (weld, madder, indigo, etc.) or animal origin (cochineal, shellfish, etc.) and belonged to various chemical types, such as flavonoids (yellow), anthraquinones (red) and indigoids (blue and violet). In this study microsamples (19) were examined from 11 Mevlana’s kaftans, dervishs’ dresses and dated from the thirteenth century. The objects belong to the collection of the Mevlana Museum in Konya, Turkey. The analysis of dyestuffs from historical object with microdestructive method as High Performance Liquid Chromatography (HPLC) with diode-array detector was performed. Historical samples (0.5–1 mg) were used as extracted with the HCl/methanol/water (2:1:1) extraction method. In this work, colour measurements of the cotton fabric samples dyed with indigotin and ellagic acid were performed by CIELab system.