title: Flavonoid composition of lemon-yellow sorghum genotypes.
abstract: Flavonoid composition of lemon-yellow sorghums grown in two locations in Texas, USA was evaluated and compared with that of white and red sorghums using high performance liquid chromatography (HPLC-PDA). Sorghums from Lubbock were brighter in colour and had minimal weathering compared to those from College Station. Sorghums with red/purple secondary plant colour had the highest levels of 3-deoxyanthocyanidins (8-187μg/g) and their levels were highest in grains from College Station (39-187μg/g). Pericarp colour did not have any effect on 3-deoxyanthocyanidin levels (p>0.05). The tan plant lemon-yellow sorghum Tx2953 had the highest levels of flavones (268-362μg/g). Among the genotypes, lemon-yellow sorghums had the highest levels of flavanones (134-1780μg/g), which are located in the pericarp and their levels were increased in the grains with a bright yellow pericarp and minimal weathering. The high flavanone levels in lemon-yellow sorghums makes this sorghum genotype a good source of those compounds.
authors.affiliation: Cereal Quality Lab, Department of Soil and Crop Sciences, Texas A&M University, TAMU 2474, College Station, TX 77843, USA. Electronic address: ldykes@ag.tamu.edu.
authors.forename: Linda
authors.initials: L
authors.lastname: Dykes
authors.affiliation: Texas A&M University, Agricultural Research and Extension Center, 1102 E. FM 1294, Lubbock, TX 79403, USA.
authors.forename: Gary C
authors.initials: GC
authors.lastname: Peterson
authors.affiliation: Cereal Quality Lab, Department of Soil and Crop Sciences, Texas A&M University, TAMU 2474, College Station, TX 77843, USA.
authors.forename: William L
authors.initials: WL
authors.lastname: Rooney
authors.affiliation: Cereal Quality Lab, Department of Soil and Crop Sciences, Texas A&M University, TAMU 2474, College Station, TX 77843, USA.
authors.forename: Lloyd W
authors.initials: LW
authors.lastname: Rooney
keywords: 3-Deoxyanthocyanidins; Flavanones; Flavones; Flavonoids; Sorghum