Propuesta de colorantes orgánicos naturales primarios para uso industrial

Abstract

Abstract: This research developed a list of potential species for primary dye extraction. The goal was to obtain the best raw material, cost, and dye yield. Using the optimal maceration method with an ethanol solvent, macerating for 24 hours to facilitate the material's easy release of color, three basic products were used for the primary colors. Changing the pH of red cabbage yielded a blue color, while annatto was applied for red, and turmeric for yellow. This resulted in high costs of 11, 12, and 12 cents, respectively. This is due to the products and materials used for extraction, considering that this is an environmentally friendly method compared to artificial dyes. Tests conducted with a UV chamber showed no characteristic changes. This suggests that natural dyes, clothing dyes, and artificial dyes exhibit good color fastness in the presence of UV rays at the three different exposure times. However, the calculated yields were 4.5% for the blue color, 3% for the red dye, and 4.1% for the yellow dye low values ​​compared to those reported in the literature, considering that 1 gram of raw material was used.