Effect of improved parboiling methods on the physical and cooked grain characteristics of rice varieties in Benin uri icon

abstract

  • The efficiency of traditional, intermediate and improved parboilers was compared through their effects on certain physical and cooking quality traits. Two varieties (NERICA 4 and Gambiaka) commonly cultivated and consumed in Benin were used. Results showed that the traditional parboiler had the highest level of heat-damaged grains (90%) with the improved equipment having the least (17%). The improved and intermediate parboiling technology produced grains of comparable hardness (4 kg and 6 kg, respectively, for Gambiaka and NERICA 4) while the traditional method resulted in a sample with the least hardness for both Gambiaka (4 kg) and NERICA 4 (3 kg). The improved method and the intermediate technology using wooden sticks at the bottom of the vessel had higher water uptake (2.97 ml/grain) and grain swelling ratios (5.41) as compared to the traditional and intermediate methods using a container with a perforated bottom.

publication date

  • 2011