Rice bran oil (RBO) is considered to be a superior quality oil as it has a balanced fatty acid profile, and it contains a number of minor components with proven nutritional benefits such as ¦Ã-oryzanol, tocotrienol, tocopherol, and squalene (Houston, 1972).
What is rice bran?
Rice bran is a byproduct of the rice milling industry obtained from milling of brown rice to produce white rice. It contains 15%¨C20% of oil. Apart from oil, rice bran is a promising source for proteins, carbohydrates, dietary fiber, vitamins, tocopherol, ¦Ã-oryzanol, and phospholipids (Tao, 1989; Houston, 1972; Saunders, 1986).
What is the yield of rice bran oil?
The yield of final oil reached 80¨C85 % through the entire refining process. Rice bran oil (RBO) is one of the most nutritious and healthy edible oils available. It contains more than 80 % unsaturated fatty acids, mainly consisting of oleic and linoleic acids in an approximate ratio of 1.1:1 [ 1, 2 ].
How is rice bran oil made in China?
Two refining processes, steam refining and miscella refining, are now the primary industrial techniques used for producing edible RBO in China. Steam refining usually produces refined RBO with a dark color, which is designated as grade-three or grade-four RBO according to the National Standard of China (GB19112 Rice Bran Oil) [ 4 ].