The DPPH radical scavenging, and FRAP assays were used to evaluate the antioxidant capacities of rice bran and rice husk samples. DPPH is a stable free-radical compound widely used to test the free-radical scavenging ability of various samples (Sakanaka,
Tachibana, & Okada, 2005). However, in vitro assays such as DPPH method does not reflect real antioxidant activity