Which solvent is used in rice bran oil extraction?
The solvents applied in the extraction processes are generally organic compounds derived from non-renewable sources . Hexane is the most common solvent used in rice bran oil extraction . This solvent is cheap and efficient, but it is a petroleum-based solvent, volatile, flammable, and dangerous for humans and for the environment .
What is the output rate of rice bran oil mill machinery?
The output rate of rice bran oil mill machinery is between 8-11% and the capacity is from 5t to 100t per day. In order to obtain high quality refined rice bran oil, the refining process begins by reducing excess free fatty acid and then decreasing the color with activated clay.
How is RBO extracted from rice bran?
The Japanese were the first to extract RBO from rice bran using the hydraulic press technique, which is still used nowa-days, but recently, the preferred industrial technique for com-mercial uses is extraction using non-polar solvents, such as hexane .
How much oil can be extracted from rice bran?
Their results show that it is possible to obtain a maximum oil yield of 20.05 g/100 g rice bran in a three-hour extraction in ethanol with 6% of water at 82.5 °C, with a 4:1 w/w solvent-to-bran ratio and a stirring speed of 137.5 rpm. The – oryzanol content varies between 1527 and 4164 mg/kg of fresh rice bran.