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Different Concentrations and Solubility of Active Lime (CaCO3) on the Quantity and Quality of Indigo Paste from Indigofera longeracemosa Boiv.ex.Baill.
Muzzazinah*, Hilmi Uulul Azmi

Biology Education, Faculty of Teacher Training and Education, Sebelas Maret University


This study aims to investigate the influence of different concentrations and solubility of active lime (25% and 35% active lime solution, 25% and 35% active lime sediment solution) on the quality of Indigofera dye paste (Indigofera longeracemosa). The method of producing indigo dye paste involves the process of soaking fresh Indigofera leaves and twigs in water, fermentation with active lime solution (CaCO3) with varying concentrations and solubility, precipitation, and filtration to obtain Indigofera paste. Several tests were conducted to evaluate the color quality on fabric and the indigo content in the Indigofera paste to assess the resulting dye paste quality. The results of this study indicate that that different treatments of giving activated lime with different concentrations and solubility gave varying results on the color, texture, aroma, and mass of the Indigofera paste produced. This research is expected to provide a better understanding of the influence of different concentrations and solubility of active lime on the quality of indigofera dye paste.

Keywords: Indigofera longeracemosa, indigo paste, active lime, concentration, solubility, dye, quality

Topic: Biology and Biology Education

Plain Format | Corresponding Author (MUZZAZINAH Yayin)

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