Abstract: Based on requests of coarse rice bran oil refining technology ,main effect factors were determined by temperature, circulation water quantity, oil remaining acid value, change of oryzanol content, height and forming time of liquid crystal. Based on principle that fatty acids can be transformed into fatty acid sodium in certainty range of pH, an efficient method was provided for separation of fatty acids in liquid crystal state of rice bran oil with high acid value.

Key words: rice bran oil, liquid crystal state, separation of fatty acids