One source for making gelatin is goat skin. Goat skin has not been optimally utilized; goats are mainly used for their meat and milk.The main raw materials in this study were the skin of 2-year-old Etawa crossbred male goats and acetic acid. Gelatin was produced from Etawa crossbred goat skin using acetic acid treatments of 0, 1.5, 3, 4.5%, and soaked for 96 hours, using a randomized block design (RAK) with 5 (five) groups. The data were analyzed using analysis of variance (ANOVA). If the results of the analysis of variance showed a significant effect, it was followed by Duncan's test. Parameters observed: chemical quality (yield, pH, moisture content, protein, fat, and ash) The results of the analysis of variance showed no significant differences (P>0.05) between acetic acid concentrations and the pH, moisture content, protein, fat, and carbohydrate content of the gelatin produced. The analysis of variance showed significant differences (P<0.05) between acetic acid concentrations and the yield and ash content produced. The yield of goat skin gelatin was 1.74–2.96%. Higher acetic acid concentrations (4.5%) resulted in higher yields compared to without acetic acid (0%). Gelatin pH was 5.04–5.76. Higher acetic acid concentrations (4.5%) resulted in more acidic pH (5.04). Water content 8.13–9.11%, protein content 84.78–86.78%, fat 1.94–2.25%. Ash content 2.33–3.74%. Ash content in treatments T0 (2.38%) and T3 (2.33%). Conclusion of this study: goat skin from Etawa crossbreeds treated with a 4.5% acetic acid solution for 96 hours produces goat skin gelatin from Etawa crossbreeds. This gelatin complies with SNI standards, with a yield of 2.96%, pH 5.04, water content 9.11%, protein 85.96%, fat 2.17%, carbohydrates 0.67%, and ash 2.33%.
Monica et al. (Wed,) studied this question.