Gamma oryzanol is a mixture of substances derived from rice bran oil, including sterols and ferulic acid, called Cycloartanyl Fe

Gamma oryzanol is widely used as a food additive, pharmaceutical material. In cosmetic area, the application to creams and sunscreens exploiting its skin age resistor function and ultraviolet absorbing effect.

For anti-oxidant action, in comparison with tocopherol, gamma-oryzanol is reported to be much superior in heat resistance and it is also said that the interaction between them further improves the anti-oxidant action.