Abstract Alginate, a heteropolysaccharide extracted from brown algae Laminaria digitata, has non-toxic status and good physical and chemical properties, was used in this study for encapsulation of the cyanobacterium Arthrospira platensis. Results indicated that adding A. platensis to alginate beads increased the level of mineral elements: magnesium by 55–60 mg/kg, iron by 38–40 mg/kg, and iodine by 88–107 μg/kg, as compared to respective control samples without microalgae addition. Adding A. platensis within alginate beads resulted in an increased antioxidative potential and consequent higher inhibition of the radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) by 15–25% compared to the respective control alginate beads. Finally, the content of beta-carotene in alginate beads fortified with A. platensis biomass amounts on average to 51 μg/g. Due to their health-promoting potential, alginate beads enriched with A. platensis biomass can, therefore, be used as a functional ingredient in the nutraceutical sector.

中文翻译：

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钝顶节螺旋体（螺旋藻）添加对海藻酸盐凝胶珠中选定矿物元素、胡萝卜素和抗氧化潜力的含量的影响

摘要 海藻酸盐是一种从褐藻Laminaria digitata 中提取的杂多糖，具有无毒状态和良好的理化性质，本研究将其用于蓝藻节旋藻的包封。结果表明，与各自的对照相比，将 A. platensis 添加到藻酸盐珠中可提高矿物质元素的水平：镁 55-60 mg/kg，铁 38-40 mg/kg，碘 88-107 μg/kg未添加微藻的样品。与相应的对照海藻酸盐珠粒相比，在海藻酸盐珠粒中添加 A. platensis 导致抗氧化能力增加，从而对自由基 2,2-二苯基-1-苦基肼 (DPPH) 产生更高的抑制 15-25%。最后，用 A. platensis 生物质强化的藻酸盐珠中的 β-胡萝卜素含量平均为 51 μg/g。