3.6 Viscosity (cP.s) of ice milkFigure 3 shows the apparent viscosity of ice cream supplemented with inulin and oat flour. The treatment T3 containing combinations of oat flour and inulin had the highest apparent viscosity compared with other treatments. In addition, the apparent viscosity values in treatments with inulin and/or oat flour were significantly (p ≤ 0.05) higher than the apparent viscosity in the control treatment. This can be explained by the addition of oat flour or inulin, which increases the water absorption and viscosity of the product. These results were in line with those obtained by Ismail et al. (2013) who reported that the addition of inulin in low-fat ice cream increased the viscosity of the product, which might be due to the effect of soluble fibres on the aqueous phase composition affecting the total soil content. In addition, the occurring interactions between the added dietary fibres and the liquid phase of the ice cream matrix could increase the viscosity of the product (El-Nagar et al., 2002) and the ability of such an additive to absorb water, leading to a viscosity increase (Adapa et al., 2000). The addition of oat flour or inulin acted as a stabiliser because of its ability to bind water in ice cream mixes. The obtained results were similar to those reported by Balthazar et al. (2018).