This was due to the rapid coagulation and precipitation of proteins at high zinc oncentration.This was associated with the poor gel property with low water holding capacity,as evidenced by very low breaking force and deformation along with very high expressible moisture content.Thus,the addition of zinc salts,especially ZnSO4, at 60 mmol/kg concentration resulted in the formation of fine and ordered filamentous gel network (Fig. 4), thus improving gel strength and water holding capacity.