Abstract

• This research concerns with the preparation of natural dye powder extract from Mangifera indica L. (Mango) bark. Natural dye solution was extracted from mango bark by using water, alkaline, acidic and alcoholic medium. The resultant concentrated dye solutions were dried in an oven at 60°C. Alcoholic medium was selected based on the yield percent and absorbance value and the dye powder was prepared at the various ethanol-water ratio, solid to liquid ratio, extraction temperature and time. The chemical compounds present in dye powder were studied by phytochemical methods and the functional groups were identified by FT-IR spectroscopy. Furthermore, content of moisture, ash and heavy metals in natural dye powder were also determined. The dye powder was then applied on cotton fabrics by using mordant with pre-mordanting, post-mordanting and simultaneous mordanting and dyeing methods. Fastness tests especially for washing, rubbing and light on dyed cotton fabrics were also studied.