The hypolipidemic action of γ-oryzanol was studied by animal test. The γ-oryzanol treatment resulted in a significant lowering cholesterol(69.2%) and triglyceride(70.3%) in plasma of hypercholesterolemic rabbits. In addition, the γ-oryzanol-treated rabbits also exhibited 29.5% reduction in percent cholesterol absorption vs. control animals, and slowed down the formation of hyperlipidemia. And the dosage of γ-oryzanol can be responsible for the hypolipidemic effect. From this study, it is concluded that γ-oryzanol is at least the main function factor for the cholesterol-lowering action in rice bran and rice bran oil.
Cereal & Feed Industry