Extraction of Bioactive Compounds From Jujube Fruit with Ultrasonic Waves and Optimization of Carpet Piles Dying Process by RSM

Plant dyes have been used in the dyeing process of persian carpets for many years. In this study, jujube fruit, a new source of plant dye, was introduced, and its dyeability on wool yarn was investigated. The results showed that jujube is a vast source of bioactive compounds and can be considered as a good candidate for wool dying without any mordants. Response surface methodology was applied to optimize the natural dying process and investigate the simple and simultaneous effects of the main parameters. Results also showed that the value of the correlation coefficient of the model was high (97.60 %), and there was a low difference between the experimental color strength value and the predicted value (0.64 %). So, the RSM method could predict and optimize the wool dyeing process with few experiments. Jujube was found to have agronomic potential as a natural dye in wool dying, producing good fastness properties without any mordants.