Among the tested sensory characteristics, taste received the lowest scores for all preparations. Colour and appearance of the yogurt samples was scored most highly for all four preparations, while among the various preparations addition of 10% fruit juice resulted in the highest scores for overall sensory attributes. The major end products of propionic fermentation are propionic, acetic, succinic acids and carbon dioxide. In Swiss-type cheese manufacturing, presence of propionibacteria plays a major role in creation of characteristic holes/eyes due to carbon dioxide release. Although some strains of propionibacteria show metabolic activities at low temperatures, their activities under these conditions may not generally lead to a sufficient rate of gas formation to create holes (Thierry, Falentin, Deutsch, & Jan, 2011). In this experiment, eye formation or changes in structure and appearance was not recorded in any preparation. Ekinci and Gurel (2008) also reported the possibility of incorporation of propionibacteria in yogurt production, without adversely affecting the structural properties of cow’s milk yogurt.