Physical quality of goat milk yogurt with the addition of pineapple and purple sweet potato

Abstract

It is necessary to eliminate the rancid smell of goat milk by fermentation technology through yogurt-making plus pineapple juice and purple sweet potato juice stabilizer. Adding pineapple juice and purple sweet potato is a food diversification by utilizing agricultural production and maintaining environmental sustainability. The study sought to enhance consumer enthusiasm for ingesting goat milk yoghurt by incorporating pineapple juice and purple sweet potato. This study used a factorial experiment in RAL 3 x 3 with 3 replications. Factor I pineapple juice dose consists of N1 = 5%, N2 = 10%, and N3 =15%. Factor II dose of purple sweet potato juice consisted T1: 0.2% (T1), T2: 0.4% and T3: 0.6%. Control goat milk yogurt without adding pineapple and purple sweet potato juice. The parameters studied consisted of. swell ability and solubility, syneresis, viscosity and WHC (Water Holding Capacity). The results of the study the addition of 15% pineapple juice (N3) and 0.6% purple sweet potato (T3) produced the best physical quality of goat milk yogurt increasing the swelling power, solubility, water holding capacity, viscosity with respective values of 10.73%, 3.08%, 90%, and 352.93% and decreasing syneresis with a value of 15.73%.