Effects of organic selenium on absorption and bioaccessibility of arsenic in radish under arsenic stress

• Published in: Food chemistry 2021-05, Vol.344, p.128614, Article 128614
• Main Authors: Hu, Liang, Wang, Xianglian, Wu, Daishe, Zhang, Baojun, Fan, Houbao, Shen, Fangfang, Liao, Yingchun, Huang, Xueping, Gao, Guiqing
• Format: Article
• Language: English
• Subjects: Adsorption; Arsenic - analysis; Arsenic - metabolism; Arsenic - toxicity; Arsenicals - analysis; Arsenicals - metabolism; Bioaccessibility; Chromatography, High Pressure Liquid; In vitro digestion; Mass Spectrometry; Organoselenium Compounds - chemistry; Plant Leaves - chemistry; Plant Leaves - metabolism; Plant Roots - chemistry; Plant Roots - drug effects; Plant Roots - metabolism; Radish; Raphanus - chemistry; Raphanus - drug effects; Raphanus - metabolism; Soil - chemistry
• ISSN: 0308-8146; 1873-7072
• DOI: 10.1016/j.foodchem.2020.128614

•Organic Se can effectively block the accumulation of As in radish.•The application of exogenous organic Se can effectively reduce the bioaccessibility of As in radish.•Se intervention can enhance the As tolerance of radish roots, and promote the migration of As from stem to leaf.•The application of organic Se can promote the conversion of As in radish from inorganic to organic form. Arsenic (As) exposure poses a serious threat to human health. The present study investigated the effects of organic Se on As accumulation, migration, and As bioaccessibility in As-stressed radish. The results showed that organic Se can effectively block the accumulation of As in radish, reduce As bioaccessibility, and promote the conversion of As from inorganic to organic form. The total As content decreased with increasing Se application in raw radish roots, the gastric fraction and the gastrointestinal fraction. Compared to the control (CK) group, the As bioaccessibility in the 24Se treatment of the yeast Se and malt Se groups decreased by 26% and 37%, respectively. These findings provide new comprehensive information for the application of organic Se to alleviate the toxicological effects of As and reduce the health risks of As in edible plants. In the future, it is necessary to carry out a deeper study of the interaction between Se and As through advanced analytical methods.