Rice bran is one of the most abundant co-products in the rice milling industry. It contains a substantial amount of protein ranging from 12% to 20%. Thailand produces rice bran annually around 2 million tons, about 40% of which is used to produce edible rice oil. The rest of this is used as feed for animals and contain 0.143–0.189 million ton of protein. Rice bran protein (RBP) is of high nutrition value and has nutraceutical properties (Saunders,1990).