Zea mays seed and Oryza sativum (rice) grains were purchased from Nsukka market in Enugu State, Nigeria in the month of February, 2010. The grains were cleaned of dirt and foreign materials and washed with clean water. They were soaked in a 1 % solution of sodium hypochlorite solution for 6 h and washed with this solution 3 times and thereafter, soaked in clean water containing 1 % sodium metabisulphite (anti-oxidant) for 24 h. After washing, the grains were reduced to a fine pulp in a rasping machine of hammer mill type . The pulp was separated from the fibers by means of a muslin cloth and agitation was provided using hands. During screening, the water used contained 1 % sodium metabisulphite in order to avoid discolouration of the starch by oxidative enzymes. The obtained starch suspension was allowed to settle under gravity and the supernatant was decanted. The starch suspension was washed severally using three times its volume of water for 3 days with intermittent shaking and changing of water. Dewatering was done using a bag with pores of about 100 mm and pressure was applied using hand. The starches were dried in an oven at 40 C and passed through sieve number 100