Trends in Textile Engineering & Fashion Technology

Extraction of Eco-Friendly Natural Dyes from Tradescantia pallida Purpurea and Cynomorium coccineum Growing Naturally in Tunisia

  • Open or Close Mahjoub Jabli*

    Department of Textile Materials and Process Research (ENIM), National School of Engineers of Monastir, Tunisia

    *Corresponding author: Mahjoub Jabli, Department of Textile Materials and Process Research (ENIM), National School of Engineers of Monastir, Monastir 5000, Tunisia

Submission: November 03, 2017; Published: January 09, 2018

DOI: 10.31031/TTEFT.2018.01.000502

ISSN: 2578-0271
Volume1 Issue1


Natural dyes are considered as promising choice to develop green textile dyeing process. In this framework, different parts of various plants constitute potential sources of natural dyes that are characterized by their easy availability and abundant nature. In this present work, Tradescantia pallida purpurea and Cynomorium coccineum are considered, for the first time, as sources of natural dyes for textile dyeing. Their prepared aqueous methanolic extracts were chemically characterized for Their Total Phenolic Contents (TPC), Total Flavanoid Contents (TFC) and for their ability to quench reactive species through the DPPH* radical scavenging activity. The results gleaned from the dosage experiments of TPC and TFC values are found, to be 52mg GAE/g extract and 4.05mg QE/g extract for the methanolic Cynomorium coccineum extract. However, in the case of Tradescantia pallida purpurea, the TPC and TFC values are equal to 33mg GAE/g extract and 4.88mg QE/g extract. These results demonstrate that the polyphenolic compounds are the most important functional components found in the studied plants. These aqueous extracts are, also, rich with flavonoids which are generally known for their coloring power when they are applied to textile materials. Tradescantia pallida purpurea gives a pH dependent color. It is red at pH3 and yellow at pH8. However, the resulted dye from Cynomorium coccineum is blue.

Keywords: Tradescantia pallida purpurea; Cynomorium coccineum; TPC; TFC; IC50

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