EXTRACTION OF NATURAL DYES FROM CLITORIA TERNATEA FLOWER

This study was to extract the dye from the dried flower of Clitoria Ternatea or Blue Pea. The traditional boiling method was applied to extract its natural colour. The established natural colour has been studied its dyeing ability on silk fabric samples by using pre-mordanting, simultaneous mordanting, post-mordanting and dyeing procedures. The effect on fabric samples were analysed their colour characteristics through CIE L* a* b* coordinates and colour fastness to washing. The test results showed that all fabrics samples produced a different range of colours where the most brilliant colours were registered with pre-mordanting method. However, all the fabric samples were poor fastness to washing. Thus, having different method of fixing and dyeing procedures with similar extract and concentration allowed variations of hues and shades of the silk samples.