The effect of fermented sweet potato flour supplementation on the characteristics of ambon banana yoghurt

Starch can be added to yogurt to improve its body and texture, specially to increase viscosity and reduce syneresis. Starch utilization in a product can be done in the form of flour containing the main component of the starch. This study aims to determine the concentration of fermented sweet potato flour (FSPF) to produce the best quality characteristics of Ambon banana yogurt, significantly reducing syneresis and retain sensory yogurt. In this research, three levels of fermented sweet potato flour (0, 1, and 2 %) with three replicates were considered. The results showed that fermented sweet potato flour affects the quality characteristics of Ambon banana yogurt, and FSPF supplementation is proven to reduce syneresis. The best characteristics of yogurt are found in fermented sweet potato flour concentration of 2%, which produces a viscosity of 3400 cP, protein content of 3.72%, and fat content of 4.45%; syneresis 3.97%; total dissolved solids was 18.77%, and the sensory score was around four or like.