The Use of Various Concentrations of Acetic Acid with a Soaking Time of 96 Hours on the Proximate Quality of Gelatin from Etawa Crossbred Goat Skin

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%.