In industrial production, rice bran oil is mostly refined by hydration degumming, active clay decolorization, steam deacidification and deodorization, and low-temperature freezing dewaxing. The specific method is to add 2‰~3‰ phosphoric acid and a proper amount of water to treat the crude rice bran oil at 90 °C for degumming.
How is rice bran oil extracted?
There are about 15?20% crude oil in rice bran; normally, the rice bran oil is extracted by pressing or solvent extraction methods, such as supercritical carbon dioxide extraction and enzymatic extraction, and then refined by decolorization, deodorization, or other processes.
What is rice bran oil?
Rice bran is an underused co-product of rice milling and presently the value is partially captured through extraction and refining of rice bran oil (RBO) , as a considerable high oil content ranging between 20 and 25% can been found in rice bran .
What is rice bran?
Rice bran is a by-product of rice processing, obtained through the polishing of the rice grain. It presents a considerable high oil content (between 20 and 25%) and it is considered an excellent source of nutritionally beneficial compounds, such as tocotrienols, tocopherols and sterols.