Dehydrated porridges containing rice and soybean in different proportions (100:0; 90:10; 80:20; 70:30; 60:40 and 50:50%) were assessed as to their pasting viscosity, water absorption (WA) and water solubility index (WSI) in order to verify their potential use as food ingredients. Steps for manufacture of the dehydrated porridge included: soybean seed dehulling, blanching, disintegration of blanched rice and soybean, homogenization and spray drying. The results indicated that increasing soybean proportions from 0 to 50% showed an increase in maximum viscosity temperature and WSI, a decrease in maximum viscosity, minimum viscosity at constant temperature, final viscosity at cooling cycle and WA. Numeric values associated with the studied properties remained relatively high consequently, the dehydrated rice-soybean porridges may be recommended as infant food or as an ingredient for baking and meat products.
dehydrated porridge; rice-soybean mixture; pasting viscosity; water absorption; water solubility index
