Table 3. Concentration of phenolic compounds as gallic acid equivalents (mg GAE/g oleoresin) in oleoresins extracted from sorghum grain using different methods. The results are expressed as the mean ± standard deviation. The lower and upper superscripts indicate the significant differences between the solvent type for conventional solvent or ball mill-assisted extraction processes, respectively. The Roman numerals show the differences between the type of extraction for each solvent.