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Antioxidant capacity of the free phenolic (FP) and bound phenolic (BP) extracts of wholegrain sorghum (WG) and sorghum bran: (a) TEAC assay and (b) DPPH assay. Each bar represents the mean of three replicates ± standard deviation. Different superscript letters in the bars represent significant differences (p < 0.05) between free and bound fractions from WG and SB.
