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Water stress increased the flavonoid content in tannin-free sorghum grains

2021; Elsevier BV; Volume: 100; Linguagem: Inglês

10.1016/j.jfca.2021.103892

1096-0481

Soraia Silva Pinheiro, Leandro de Morais Cardoso, Pamella Cristine Anunciação, C. B. de Menezes, Valéria Aparecida Vieira Queiróz, Hércia Stampini Duarte Martino, Ceres Mattos Della Lúcia, Helena Maria Pinheiro Sant’Ana,

Phytochemicals and Antioxidant Activities

• Water stress increased flavonoids in sorghum genotypes. • The effect of water stress on 3-DXAs was related to the presence of tannin . • Water stress increased 3-DXAs in tannin-free sorghum genotypes. • Water stress increased flavones and flavanones in sorghum genotypes. The effect of water stress on the profile of flavonoids was evaluated in three tannin-containing (SC115, SC60, and SC720) and in three tannin-free (B.Tx635, SA 5330-MARTIN, and SC373) sorghum genotypes. Flavones, flavanones and 3-deoxyanthocyanidins were analyzed by high-performance liquid chromatography with diode array detection. The water stress x genotype interaction increased the sorghum flavones (ranging from 11.3–85.5 μg/g), flavanones (0.14–157.2 μg/g) and 3-deoxyanthocyanidins (5.2–245.3 μg/g) content. The effect of water stress on 3-deoxyanthocyanidins was related to the presence of tannin in sorghum genotypes. Water stress increased the functional potential of sorghum, especially in tannin-free genotypes, by increasing the flavone, flavanone and 3-deoxyanthocyanidin content.