Study on metabolic variation in whole grains of four proso millet varieties reveals metabolites important for antioxidant properties and quality traits

文献类型： 外文期刊

第一作者： Li, Wei

作者： Li, Wei;Wen, Lichao;Zhang, Zenglin;Pang, Xueli;Deng, Zhichao;Liu, Tao;Guo, Yongfeng;Chen, Zhentian

作者机构：

关键词： Proso millet; Metabolic profiling; Differential metabolites; Phenolic acid; Flavonoid; Amino acid

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN： 0308-8146

年卷期： 2021 年 357 卷

页码：

收录情况： SCI

摘要： Proso millet (Panicum miliaceum L.) is a minor cereal crop that has been considered as health-promoting food. Little information is available however, about the metabolic basis of nutritional values of proso millet. In this study, using a UHPLC-QqQ-MS/MS-based metabolomics approach, we compared the metabolomes of whole grains from four proso millet varieties with different bran color, namely White, Black, Gray and Red. In total, 672 metabolites were identified, among which 121, 116 and 148 metabolites showed differential accumulation in the three comparison groups (White vs. Black/Gray/Red). The results demonstrated the main pathways that were differentially activated included: tryptophan metabolism, flavonoid, isoflavonoid, flavone, and flavonol biosynthesis. Considerable difference between varieties was observed in accumulation of phenolic acids and flavonoids, which might lead to difference in antioxidant activities. The results of this study provide useful information for further investigation of proso millet food chemistry and for sufficient utilization of this special crop.

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