Phytochemicals and antioxidant activity in Arthrospira platensis EP44 fortified with selenium

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发表日期：

2025年3月15日

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Mahbobe Ghanbarzadeh,
Mohammad Azadbakht,
Hossein Asgarirad,
Masoumeh Rezaei Moshaei

摘要

The study investigated the effects of different selenium concentrations on the growth variables of Arthrospira platensis EP44 and its ability to accumulate selenium. The maximum growth variables, including final biomass concentration and linear growth rate, were observed at 5 mg L⁻¹ Na₂SeO₃. The highest level of selenium bioaccumulation was observed at 70 mg L⁻¹ Na₂SeO₃. Based on both the growth variables and selenium accumulation, the optimal selenium concentration to produce enriched A. platensis EP44 was determined to be 5 mg L⁻¹ Na₂SeO₃. Then, the effect of Na₂SeO₃ at 5 mg L⁻¹ was studied on phytochemicals in A. platensis EP44, including protein and sugar contents, phenolic compound, photosynthetic pigments, fatty acid, and antioxidant activity. The highest levels of soluble protein, flavonoid, soluble sugar, photosynthetic pigments, and antioxidant activity were observed at 5 mg L⁻¹ Na₂SeO₃ compared to the control group. Additionally, A. platensis EP44 treated with 5 mg L⁻¹ Na₂SeO₃ showed an increase in unsaturated fatty acid content and a decrease in some saturated fatty acids. The findings indicate that A. platensis EP44 enriched with selenium at an optimal concentration is could be recommended as antioxidant food supplement for human health.