World Journal of
Pharmaceutical and Life Sciences

IMPROVEMENTS IN DYEING OF NATURAL FIBERS WITH ECO-FRIENDLY SAFFRON NATURAL DYE USING CHITOSAN

N. F. Ali*and Riad S. R. EL-Mohamedy

ABSTRACT

Natural coloring matter extracted from Saffron plant (Crocussativus) used for dyeing silk and poly amide fibers by conventional and microwave heating methods. Dyeing conditions as dye extracted quantity, dye concentration, pH values, temperature and time of dyeing were studied. The silk and poly amide fibers were pretreated with chitosan of different concentrations. Chitosan pre-treatment were carried out instead of mordant. Color strength (K/S) values was measured for dyed silk and poly amide fibers. The effect of the antimicrobial activity towards some kinds of bacteria and fungi were also assessed and the results obtained exhibits high inhibition percent. The results obtained showed that fastness properties such as light, washing, rubbing and perspiration of treated dyed fibers are higher than the untreated. The results of dye extraction and color strength (K/S) of silk and poly amide fibers exhibited that microwave heating method is more effective than conventional method. Dyeing by microwave heating method saving time and energy as shown from the results, it is economical method and eco-friendly, it is also produce a higher dye uptake as compared to conventional method. The results show that, the treated fibers exhibited higher results than the untreated. Natural dyes were used as substitute of synthetic dyes because it is non-polluting, and involve inexpensive equipment and small-scale operations.

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