Phenolic compounds and antioxidant activity in experimental lines of pigmented sorghum grown in Coahuila Mexico

The objective of this study was to evaluate and compare the characteristics of color, content of total phenols, total flavonoids, condensed tannins, total anthocyanins and the antioxidant capacity of seven experimental lines of pigmented sorghum (orange and red grain color) grown in Coahuila, Mexico. Results revealed that the values of lightness, color saturation and hue angle (L*, C* and h) were found in a range of 39 to 64, 14 to 18 and 40 to 80, respectively, which indicates that the analyzed samples were found in the red-yellow quadrant of the hue circle. On the other hand, chemical analyzes indicate a wide range of variability in the content of total phenols (84.77-1203.96 mg GAE/100 g), total flavonoids (11.70-1012.14 mg CE/100 g), condensed tannins (269.95-2831.61 mg CE/100 g) and total anthocyanins (11.87-29.06 mg C3G/100 g). Antioxidant capacities showed significant differences (p