关键词: 硒, 赤子爱胜蚓, 富集转化, 生物可利用率, 农业生产

Abstract: Selenium (Se), as one of the essential micronutrient for human beings and animals, plays an important role in maintaining body health. Given that the daily Se intake in some Se-deficient areas of China cannot meet the recommended standard of the hygiene industry (WS/T 578.3—2017), it is still an urgent task to develop organic Se biofortification supplements through Se enrichment, and increase organic Se conversion efficiency and Se bioaccessibility. Se usually interacts with amino acids in the process of biological metabolism and synthesizes with proteins. Earthworm is a kind of soil animal with high protein content. This paper systematically analyzed the biofortification of Se by earthworm Eisenia fetida, from the aspects of Se accumulation and transformation in E. fetida body, the effect of Se on the growth, reproduction and the nutritional components of earthworm body. Besides, the potential application of earthworms as Se-biofortified materials was discussed to provide theoretical basis or scientific support for the development of the Se-enriched agricultural industry.

Key words: selenium, Eisenia fetida, bioaccumulation and transformation, bioaccessibility, agricultural production