Abstract: Apparatus for separating and recovering starch and gluten from wheat flour dough. It includes a known trough-like vessel having a semicircular, at least partly perforated bottom, dough treatment members mounted on a rotatable shaft extending longitudinally within the vessel, means for adding wash liquid to the vessel, means for withdrawing this wash liquid together with extracted starch via the perforations, means for introducing dough at one end of the vessel and means for discharging gluten at the opposite end. The treatment members are in the form of rotatable radial blades having angularly inclined faces adapted to lift and advance the dough along the vessel while substantially avoiding pressing the dough against the perforated bottom. The blades also have sharpened leading edges adapted to co-operate with fixed cutter bars extending transversely across the vessel.