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Effect of magnetic field pretreatment on germination characteristics, phenolic biosynthesis, and antioxidant capacity of quinoa

文献类型： 外文期刊

作者： Wang, Shufang 1 ; Zhang, Xuejiao 1 ; Fan, Yuhan 1 ; Wang, Yiting 1 ; Yang, Runqiang 1 ; Wu, Jirong 2 ; Xu, Jianhong 1 ; Tu, Kang 1 ;

作者机构： 1.Nanjing Agr Univ, Coll Food Sci & Technol, Whole Grain Food Engn Res Ctr, Nanjing 210095, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Jiangsu Key Lab Food Qual & Safety,Collaborat Inno, Minist Sci & Technol,Key Lab Agroprod Safety Risk, State Key Lab Cultivat Base,Key Lab Control Techno, Nanjing 210014, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Food Safety & Nutr, Nanjing 210014, Jiangsu, Peoples R China

关键词： Quinoa; Magnetic field; Phenolic components; Phenylpropanoid pathway; Antioxidant system

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：6.1； 五年影响因子：6.2 ）

ISSN： 0981-9428

年卷期： 2024 年 212 卷

页码：

收录情况： SCI

摘要： The development of quinoa-based functional foods with cost-effective methods has gained considerable attention. In this study, the effects of magnetic field pretreatment on the germination characteristics, phenolic synthesis, and antioxidant system of quinoa (Chenopodium quinoa Willd.) were investigated. The results showed that the parameters of magnetic field pretreatment had different effects on the germination properties of five quinoa varieties, in which Sanjiang-1 (SJ-1) was more sensitive to magnetic field pretreatment. The content of total phenolics and phenolic acids in 24-h germinated seeds increased by 20.48% and 26.54%, respectively, under the pretreatment of 10 mT magnetic fields for 10 min compared with the control. This was closely related to the activation of the phenylpropanoid pathway by increasing enzyme activities and gene expression. In addition, magnetic field improved 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2 '-Azinobis-(3-ethylbenzthiazoline-6sulphonate) (ABTS) free radicals scavenging capacities and increased peroxidase (POD), catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX) and glutathione peroxidase (GSH-Px) activities. This study suggests that magnetic field pretreatment enhanced gene expression of phenylalanine ammonia lyase (PAL), 4coumarate-CoA ligase (4CL), chalcone synthase (CHS) and chalcone isomerase (CHI), increased antioxidant enzyme activity and phenolics content. Thereby lead to an increase in the antioxidative capacity of quinoa.

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