Dykes Linda, Rooney Lloyd W, Waniska Ralph D, Rooney William L
Cereal Quality Laboratory, Department of Soil and Crop Sciences, Texas A&M University, College Station, Texas 77843-2474, USA.
J Agric Food Chem. 2005 Aug 24;53(17):6813-8. doi: 10.1021/jf050419e.
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.
评估了植物颜色、果皮厚度、种皮色素沉着和扩基因对13个高粱基因型酚类物质和抗氧化活性水平的影响。测定了总酚、缩合单宁、黄烷-4-醇和花青素的含量。使用2,2'-联氮双(3-乙基苯并噻唑啉-6-磺酸)和2,2-二苯基-1-苦基肼测定法评估了抗氧化活性水平。具有种皮色素沉着和扩基因（B(1)()B(2)()S）的高粱酚类物质和抗氧化活性水平最高。此外，具有紫色/红色植株（PQ）和厚果皮（z）基因的高粱酚类物质和抗氧化活性水平有所提高。具有黑色果皮的高粱黄烷-4-醇和花青素含量高于其他品种。这表明植物颜色、果皮厚度、种皮色素沉着和扩基因可提高酚类物质和抗氧化活性水平。该信息对于生产酚类物质和抗氧化活性水平更高的高粱可能有用。
