Phenolic compounds and antioxidant activity of sorghum grains of varying genotypes. uri icon

abstract

  • The effects of plant color, pericarp thickness, pigmented testa, and spreader genes on phenols and antioxidant activity levels of 13 sorghum genotypes were evaluated. Total phenols, condensed tannins, flavan-4-ols, and anthocyanins were measured. Antioxidant activity levels using the 2,2'-azinobis(3-ethyl-benzothiazoline-6-sulfonic acid) and 2,2-diphenyl-1-picrylhydrazyl assays were evaluated. Sorghums with a pigmented testa and spreader genes (B(1)()B(2)()S) had the highest levels of phenols and antioxidant activity. In addition, sorghums with purple/red plants (PQ) and thick pericarp (z) genes had increased levels of phenols and antioxidant activity. Sorghums with a black pericarp had higher levels of flavan-4-ols and anthocyanins than the other varieties. This suggests that genes for plant color, pericarp thickness, presence of a pigmented testa, and spreader genes increase phenols and antioxidant activity levels. This information can be useful in the production of sorghums with increased phenols and antioxidant activity levels.

published proceedings

  • J Agric Food Chem

altmetric score

  • 3

author list (cited authors)

  • Dykes, L., Rooney, L. W., Waniska, R. D., & Rooney, W. L.

citation count

  • 213

complete list of authors

  • Dykes, Linda||Rooney, Lloyd W||Waniska, Ralph D||Rooney, William L

publication date

  • August 2005