The total
phenolic content (TPC) was highest in the bran, averaging 7.35 mg GAE/g and contributing 60%, 86% and
84% of phenolics in white, red and black rice. The average TPC of the embryo and endosperm were 2.79
and 0.11 mg GAE/g accounting for 17% and 23%, 4% and 10% and 7% and 9% in white, red and black rice,
respectively. The antioxidant capacity determined using DPPH and ORAC displayed a trend similar to TPC.