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首页> 外文期刊>Journal of natural fibers >Free Radical Quenching Activity of Polyphenols (Lignans) in Three Cultivars of Flax (Linum usitatissimum L.)
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Free Radical Quenching Activity of Polyphenols (Lignans) in Three Cultivars of Flax (Linum usitatissimum L.)

机译：三种亚麻品种（Linum usitatissimum L.）中多酚（木质素）的自由基猝灭活性

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摘要

The current study represents the investigation of the methanol extracts of three Egyptian flax cultivars for their antioxidant activity and phytochemical screening was realized for the extracts. Three flax cultivars were evaluated for their DPPH radical, and metal chelating activities, total phenolic (TPC), and totalflavonoids contents (TFC). All cultivars exhibited significant antioxidant activities determined by the two assays, and contained significant levels of phenolic and flavonoids compounds. Our results showed that the highest activity of DPPH radical scavenging activity was exhibited by the methanol extracts of Giza-8 and Sakha-2. The highest metal chelating activity was observed in Giza-8 compounds like phenolics, flavonoids, and others, which could be responsible for the obtained activities. Sakha-2 and Giza-8 showed the highest total phenolics (TPC) and total flavonoids (TFC) in Giza-1. The correlation analysis revealed that the TPC showed strong correlations with DPPH radical scavenging activity (p ≥ .05), whereas its correlations with iron chelating activity were poor (p ≥ .05).
机译：目前的研究代表了对三个埃及亚麻品种甲醇提取物的抗氧化活性的研究，并对提取物进行了植物化学筛选。评价了三个亚麻品种的DPPH自由基，金属螯合活性，总酚（TPC）和总黄酮含量（TFC）。通过两种测定法，所有品种均表现出显着的抗氧化活性，并含有显着水平的酚类和类黄酮化合物。我们的结果表明，Giza-8和Sakha-2的甲醇提取物表现出最高的DPPH自由基清除活性。在Giza-8化合物（如酚类，类黄酮等）中观察到最高的金属螯合活性，这可能是所获得的活性的原因。 Sakha-2和Giza-8在Giza-1中显示最高的总酚类（TPC）和总黄酮（TFC）。相关分析表明，TPC与DPPH自由基清除活性强相关（p≥.05），而与铁螯合活性的相关性较弱（p≥.05）。

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  • 来源
    《Journal of natural fibers》 |2012年第4期|277-289|共13页
  • 作者

    ZEINAB A. SALAMA; ALAA A. GAAFAR; D. M. EL-HARIRI;

  • 作者单位

    Plant Biochemistry Department, National Research Centre, Cairo, Egypt;

    Plant Biochemistry Department, National Research Centre, Cairo, Egypt;

    Field Crops Department, National Research Centre, Cairo, Egypt,Representative of FAO EUR for the Middle and Near East, Field Crops Research Department, National Research Centre, Cairo, Egypt;

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  • 正文语种 eng
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  • 关键词

    flax; cultivar; antioxidant activity; TPC; TFC; HPLC;

    机译：亚麻;品种抗氧化活性TPC;TFC;高效液相色谱;

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