Institute of Food and Nutraceutical Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
Institute of Agro-Food Science and Technology, Shandong Provincial Key Laboratory of Agricultural Products Deep Processing, Shandong Academy of Agricultural Science, Jinan 250100, China.
Food Chem. 2021 Mar 15;340:128123. doi: 10.1016/j.foodchem.2020.128123. Epub 2020 Sep 24.
Six commercial red sorghum varieties (Tong Za 117, 141, 142 and 143, Chi Za 109 and 101) were investigated for their triacylglycerol (TAG) profiles, soluble and bound phenolics, and radical scavenging and anti-inflammatory activities. A total of 21 TAGs were identified in red sorghum oils for the first time. Total phenolic (TPC) and flavonoid contents (TFC) in the soluble or bound phenolic fractions differed among red sorghums. Significant correlation among TPC, TFC and DPPH radical scavenging activities was observed in both fractions. Except for caffeic acid, most of phenolic acids in red sorghums are in the bound form. Soluble 3-deoxyanthocyanidins contents (2.12-57.14 μg/g) were significantly higher than those of bound forms (0.01-0.18 μg/g) regardless of sorghum varieties and types of 3-deoxyanthocyanidins. Moreover, the stronger anti-inflammatory capacity of soluble phenolic fraction in Tong Za 117 correlated with its higher TPC, TFC and radical scavenging activity than those of its bound counterpart.
六种商业红高粱品种（通扎 117、141、142 和 143、赤扎 109 和 101）的三酰基甘油（TAG）图谱、可溶性和结合酚类物质以及自由基清除和抗炎活性进行了研究。首次在红高粱油中鉴定出 21 种 TAG。可溶性或结合酚类物质中总酚（TPC）和类黄酮含量（TFC）在红高粱之间存在差异。在这两个部分中均观察到 TPC、TFC 和 DPPH 自由基清除活性之间存在显著相关性。除了咖啡酸之外，红高粱中的大多数酚酸都以结合形式存在。无论高粱品种和 3-去氧花色苷的类型如何，可溶性 3-去氧花色苷含量（2.12-57.14μg/g）均明显高于结合形式（0.01-0.18μg/g）。此外，通扎 117 可溶性酚类物质部分的抗炎能力较强，与其结合形式相比，其 TPC、TFC 和自由基清除活性更高。
