DAHONG PANULAT: EXTRACTS FROM TERMINALIA CATAPPA (TALISAY) LEAVES AS AN ALTERNATIVE INK

Abstract

This study aimed to develop an alternative ink using the extract from Terminalia Catappa (Talisay) leaves, known for its potential to produce dye. The ink formulation included isopropyl alcohol, baking soda, and Arabic gum powder as additives. The study employed a quantitative and experimental approach to determine the drying rate and color intensity of three samples. A two-factor ANOVA without replication was used to test the null hypothesis. he analysis showed that the F-value for the three samples was 2.6863 with a P-value of 0.1821, while the F-value for drying rate was 0.4715 with a P-value of 0.6548. Since the P-values are greater than 0.05, the null hypothesis cannot be rejected, implying that the drying rate of Terminalia Catappa (Talisay) leaves is not significantly impacted by the amount of Arabic gum powder. Instead, the Arabic gum powder helps ensure consistency in writing and stability, preventing the dye from spreading on the paper.

On the other hand, the F-value for color intensity was 42.8509, which is higher than the critical value of 6.9443, and the P-value of 0.00199 is less than 0.05. For the three samples, the F-value was 13.0537, exceeding the critical value of 6.9443, with a P-value of 0.0177, which is also less than 0.05. Therefore, the null hypothesis is rejected, indicating that the amount of Arabic gum powder significantly affects the color intensity. The study revealed that the color intensity of Terminalia Catappa (Talisay) ink varies based on the freshness of the leaves. Dried Talisay leaves produced a darker color, while fresh leaves resulted in a lighter hue. Additionally, the number of days the Terminalia Catappa extract is stored significantly influences the color intensity; the longer the extract is stored, the more vivid the color becomes. However, further development is needed to improve the stability and drying rate of the alternative ink for more practical use.