INatural Blue Dye from Clitoria Ternatea: Extraction and Analysis Methods

Abstract

An increased environmental awareness of health hazards caused by synthetic dyes has led to revival of natural dyes. Dyes obtained from natural sources have emerged as important substitutes for synthetic dyes. Color-yielding plants such as butterfly pea flowers have been used to study color extraction and can be used as dyeing material for coloring industry. Analytical studies, such as UV–VIS spectrophotometer analysis and dye concentration analysis, are performed on extracted dye using flower petals. In this study, aqueous extractions of dye from flowers were carried out in the following conditions to obtain optimization characterization: time of extraction (30-180 minutes), temperature (60-90°C), amount of flowers (0.1-2gm) and pH (2-10). It was observed that dye concentration increases gradually at higher temperature and for longer time.

Citation

Sinha, K., Das (Saha), P. and Datta, S. (2012), "INatural Blue Dye from Clitoria Ternatea: Extraction and Analysis Methods", Research Journal of Textile and Apparel, Vol. 16 No. 2, pp. 34-38. https://doi.org/10.1108/RJTA-16-02-2012-B003