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In the present study, cotton, silk and polyester yarns were dyed with the aqueous extracts of natural dyes from the pink leaves of  Cordyline fruticosa  and red sepals of  Mussaenda erythrophylla . The dyeing was performed with mordants (Alum, Acetic acid, Copper sulphate and Lemon juice) and without mordant. UV-visible spectral analysis of natural dyes was determined. The selected dyed samples were assessed in terms of dye absorption percentage (E%), colour values (CIELAB), colour strength (K/S) and fastness properties. Various shades of ash-green and pink colours were obtained from the aqueous extracts of  C. fruticosa  leaves and  M. erythrophylla  sepals. Fastness results showed good to very good grades. It was observed that multiple colours were produced with different mordants from a single source; therefore, the dyes extracted from the above plants are polygenetic in nature.

Extraction of polygenetic natural dyes from Cordyline fruticosa & Mussaenda erythrophylla for textile substrates