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首页> 外文期刊>Lebensmittelchemie >An online NP-HPLC-DPPH method for the determination of the antioxidant activity of Condensed polyphenols from different chocolate manufacturing stages
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An online NP-HPLC-DPPH method for the determination of the antioxidant activity of Condensed polyphenols from different chocolate manufacturing stages

机译:在线NP-HPLC-DPPH方法测定不同巧克力生产阶段的缩合多酚的抗氧化活性

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摘要

Monomer cocoa polyphenols can be measured easily by RP-HPLC whereby more and more studies use NP-HPLC for evaluating the distribution of the oligomeric polyphenols. From conventional photometrical cuvette measurements it is known that the portion of Condensed polyphenols in cocoa is much higher than that of monomer polyphenols. Due to the lack of reliable methods, it is difficult to predict the antioxidant capacity of Single higher molecular polyphenols quickly. As presented recently the antioxidant activity of Condensed cocoa polyphenols can be measured simultane-ously using an online NP-HPLC-DPPH assay. The question arises how Condensed polyphenols are altered during different chocolate manufacturing stages, and with them their antioxidant capacity.
机译:单体可可多酚可以通过RP-HPLC轻松测量,因此越来越多的研究使用NP-HPLC来评估低聚多酚的分布。从常规的光度比色皿测量得知,可可中缩合多酚的含量远高于单体多酚。由于缺乏可靠的方法,难以快速预测单一高分子多酚的抗氧化能力。如最近所介绍的,可以使用在线NP-HPLC-DPPH分析同时测量缩合可可多酚的抗氧化活性。随之而来的问题是,在巧克力生产的不同阶段,缩合多酚如何发生变化,以及它们的抗氧化能力。

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  • 来源
    《Lebensmittelchemie》 |2016年第3期|72-72|共1页
  • 作者

    V. Pedan; N. Fischer; S. Rohn;

  • 作者单位

    Zurich University of Applied Sciences, Wädenswil/CH;

    Zurich University of Applied Sciences, Wädenswil/CH;

    Hamburg;

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  • 正文语种 ger
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