• What are the steps in a rice bran oil refining process?
  • The steps in the process of refining rice bran oil are given in Fig. 14.1. The first step in the refining process with crude rice bran oil is usually dewaxing or winterizing. However, for other vegetable oils, the dewaxing step can be done at different times in the refining process.
  • How is rice bran oil refined?
  • After the extraction, the crude rice bran oil is often refined in order to improve its quality and commercial value. The fundamental steps of the refining process include dewaxing, degumming, neutralization of the free fatty acids, bleaching, and steam deodorization.
  • Can rice bran oil be used to produce biodiesel in Indonesia?
  • With the embargo of Indonesia palm oil by European Union and more portion of palm oil is converted into biodiesel, rice bran oil would have opportunity to supply the country to meet the demand for edible oil. Rice bran oil offers a number of advantages compared to other edible oils in terms high antioxidant contents and high smoke point.
  • What are the technologies of rice bran oil?
  • After that, the fatty acid composition, bioactive compounds, and the processing technologies of rice bran oil are described and the refining technology of rice bran oil (degumming, deacidification, dewaxing, etc.) as well as the technologies to remaining the bioactive compounds in rice bran oil are introduced.
  • What is deacidification of rice bran oil?
  • Deacidification is the process of removing free fatty acids from crude rice bran oil. The deacidification methods of rice bran oil include alkali refining, distillation, mixing, re-esterification, and extraction. The alkali refining method has comprehensive effects such as deacidification and decolorization, but the refining loss is much higher.
  • What is the oleic acid value of rice bran oil after alkali refining?
  • After alkali refining, the oleic acid value of rice bran oil was reduced to 0.23 mg/g. The decolorization process cannot only improve the color of rice bran oil but also remove trace metal ions, peroxides, and some odorous substances (He 2010).