Similar to the concentrations of TSPCs, a variation in the AOA in
grains with the same pericarp color was observed. The AOAs in grains
with a red pericarp color varied between 37.19 mmol TE g−1 grain
and 68.83 mmol TE g−1 grain, demonstrating AOA variability within
the group. Variation in the antioxidant activity of rice grains with
the same pericarp color was also observed by Goffman and Bergman