Keywords

Abstract

Abstract Inorganic selenium (Na2SeO3) was added in batches at different stages of the growth of Spirulina for selenium-enrichment treatment. 11 experimental groups were set up, and selenium was added in batches from the 1st to the 10th day. The effects of Spirulina in different selenium treatment groups were observed. The enrichment and transformation of inorganic selenium and the changes in photosynthetic pigments and proteins. The results show that by adding selenium in batches on the 7th, 8th, and 9th days of the growth of Spirulina (experimental group 7), a selenium yield of 1 743.06 ¦Ìg can be obtained /L, with an organic selenium ratio of 86.85%, the selenium content of Spirulina with high selenium content increased 150 times compared with the control, and the biomass also increased significantly (1.34 g/L, compared with 1.18 g/L in the control group); The selenium in the algae of the experimental group is mainly distributed in water-soluble proteins, accounting for 60.51% of the total selenium content and 69.67% of the organic selenium content; the main nutrients of Spirulina are phycocyanin (PC) and allophycocyanin (APC). , lutein, and ¦Â-carotene contents also increased to varying degrees, indicating that this selenium-enriched method is an effective way to high-value treatment of Spirulina

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