Influences of methylcellulose on dynamic theological behaviors of 50 g L(-1) (dilute) wheat gliadins in 50% (v/v) aqueous propanol were investigated as a function of methylcellulose concentration C ranging from 5 to 20 g L(-1). The mixture solutions exhibit shear rate thinning that becomes pronounced with increasing C. Specific viscosities of the first and the second Newtonian plateau viscosities, as well as the steady-flow viscosity as a function of C. reveal that methylcellulose is in the semi-dilute unentangled regime at temperatures from 5 to 65 degrees C. The intermolecular interaction between methylcellulose and gliadins provides high flow resistance, improved shear thinning and steady-flow activation energy of the mixture solution in comparison with pure gliadins solution. (C) 2009 Elsevier Ltd. All rights reserved.