Abstract
The rice bran oil extracted with benzene has deep color, and it is difficult to decolorize it. Alkali and Fuller's earth treatments were usually used to decolorize it, but the author could get a pretty good result by adding the oxalic acid treatment further to them.
The oxalic acid treatment is considered to help the decorizing effect of Fuller's earth treatment, but it seems to have a close relation with acid value after the alkali treatment.
