Rice bran oil (RBO) is extracted from rice bran and has also become increasingly popular. RBO is considered to be one of the healthiest cooking oils due to its balanced proportion of fatty acids, as well as high content of γ-oryzanol together with phytosterols, vitamin E, wax ester, trace and macro elements, carotenoids, and phenolics.
What is rice bran oil (RBO)?
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 γ-oryzanol, tocotrienol, tocopherol, and squalene ( Houston, 1972 ).
What is rice bran (RB)?
Rice bran (RB), the outer brown layer of rice, is one of the main by-products during milling. It is a rice source of rice-bran oil (RBO) with good fatty acid profile and phytonutrients like oryzanols, tocopherols, tocotrienols, phytosterols, and importantly dietary fibers.
Does rice bran oil contain -oryzanol?
Rice bran oil contains a high percentage of γ-oryzanol. This is a compound of ferulic acid and phytosterols. Ferulic acid, like caffeic acid, commonly occurs in the outer layers of plants and acts as an antioxidant, protecting the plant from free radicals.