In this study, polydextrose at 2 g/100 mL was chosen for further
development of the low-fat set yoghurt supplemented with the
probiotic-cultured‘Kluai Khai’ banana purée. The decision was
made according to the reasons given previously. Moreover, difference of 1 g/100 mL, i.e., if the addition level having been at 1 g/
100 mL, was considered negligible in term of raw material cost,
which is also lower than that of inulin. Also, the addition of 1 or 2 g
polydextrose/100 mL milk did not significantly affect the physical
and sensory properties of the yoghurt sample. Therefore,
a concentration of 2 g/100 mL was more suitable for ensuring the
product’s better qualities.