文献类型： 外文期刊

作者： Zhao, Xia ¹ ; Zhang, Xianwei ² ; Wang, Linghui ¹ ; Huang, Qiulan ¹ ; Dai, Haifang ¹ ; Liu, Ling ¹ ; Zhu, Yumin ¹ ; El-Sappah, Ahmed H. ¹ ; Wu, Hui ¹ ;

作者机构： 1.Yibin Univ, Fac Agr Forestry & Food Engn, Yibin 644000, Peoples R China

2.Chongqing Acad Agr Sci, Chongqing 401329, Peoples R China

3.Zagazig Univ, Fac Agr, Genet Dept, Zagazig 44511, Egypt

4.8 Jiusheng Rd, Yibin 644000, Sichuan, Peoples R China

关键词： Flavonoid; Coloured rice; Foliar application of iron; Glycosylation

期刊名称：FOOD CHEMISTRY （ 影响因子：8.5； 五年影响因子：8.2 ）

ISSN： 0308-8146

年卷期： 2024 年 444 卷

页码：

收录情况： SCI

摘要： Coloured rice is known as a healthcare food owing its rich flavonoid content. To better understand the effects of iron on the flavonoid metabolism of coloured rice grains, different concentrations of FeSO4 were foliar sprayed on to red rice Yuhongdao 5815 (RR) and black rice Nanheinuo (BR). The results revealed the association of iron with the increased accumulation of anthocyanins in BR and proanthocyanins in RR along with enhancements in their antioxidant capacities and total flavonoid contents. Metabolomic analysis revealed that the differential metabolites between the iron treated coloured rice and the control primarily occurred because of the O-linked glycosylation of aglycones, which are involved in the flavonoid pathway. RR exhibited a significantly higher number of differential metabolites compared with BR. Thus, foliar FeSO4 application affects the O-linked glycosylation and positively regulates flavonoid metabolism.