Viscosity is an important property of foods that affects the
mouthfeel and texture of fluids such as beverages (Yu, Ahmedna, &
Goktepe, 2007). According to this study all sesame milks exhibited
pseudoplastic behavior over the shear rates of 14e150 (s1), i.e., the
viscosity decreased with an increase in the shear rate. There were
significant (p < 0.05) differences in viscosity due to the roasting
treatment. The viscosity of milk increased with soaking sesame
seeds in water containing 0.5 g/100 mL NaHCO3 compared to water
not containing NaHCO3. This may partly be attributed to the slightly
higher total solids and also increase of protein solubility in the
samples containing 0.5 g/100mLNaHCO3 in soak water compared to
the control. Similar results were observed in other studies about the
viscosity of soymilk that significantly increased as total solids
increased (Kawada, Tanaka, Suzuki, Shidara, & Kikuchi, 2002).
Blanching sesame seeds inwater resulted in a significant (p < 0.05)
decrease in viscosity, possibly due to the higher content of fat in
blanched treatments.