Abstract
In this study, buttermilk powder, a dairy by-product, was used in ice cream production at different rates. The amount of buttermilk powder was calculated as 5%, 10%, 20%, 30% and 40% of skimmed milk powder used in mix composition. Addition of buttermilk powder did not affect the titratable acidity, pH value and dry matter content of the aged mixes (P > 0.05), but increased consistency index, fat and ash content (P < 0.05). Furthermore, phase separation decreased with the increasing amounts of buttermilk powder (P < 0.05). As buttermilk powder increase, overrun and b* values of ice cream samples increased, hardness values decreased and first dripping times were prolonged (P < 0.05). Sensory analysis revealed that the increasing buttermilk powder did not affect appearance and texture properties of ice cream samples (P > 0.05), however, samples with high powder content had lower flavor scores from panelists (P < 0.05).