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首页> 外文期刊>International Journal of Biological Macromolecules: Structure, Function and Interactions >Synthesis of selenium-containing polysaccharides and evaluation of antioxidant activity in vitro
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Synthesis of selenium-containing polysaccharides and evaluation of antioxidant activity in vitro

机译：含硒多糖的合成及体外抗氧化活性的评价

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摘要

Selenium (Se) is an essential trace element for human beings and many other forms of life. Organic Se from natural foods has higher bioavailability and is safer than inorganic Se species. In the present study, selenium-containing derivatives of Artemisia sphaerocephala polysaccharide with the highest Se content of 1703μg/g were synthesized using H _2SeO _3/HNO _3 and BaCl _2 as a catalyst. The effects of the ratio of HNO _3 concentration and reaction temperature were investigated. Results of Raman and ~(13)C NMR spectroscopy indicated that C-6 substitution was predominant in selenized polysaccharide. A sharp decrease in M _w was observed in the selenized reaction due to the acid environment. The in vitro antioxidant results suggest that selenium-containing polysaccharide should be applied as a novel selenium source in dietary supplements, with potent antioxidant properties.
机译：硒是人类和许多其他生命形式中必不可少的微量元素。天然食品中的有机硒比无机硒种类具有更高的生物利用度，并且更安全。本研究以H _2SeO _3 / HNO _3和BaCl _2为催化剂，合成了硒最高含量为1703μg/ g的球形蒿蒿含硒衍生物。研究了HNO_3浓度比和反应温度的影响。拉曼光谱和〜（13）C NMR光谱结果表明，硒化多糖中C-6取代占主导地位。由于酸性环境，在硒化反应中观察到M _w急剧下降。体外抗氧化剂结果表明，含硒多糖应作为具有有效抗氧化剂特性的新型硒源应用于膳食补充剂。

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