Antioxidative activity of a zinc-chelating substance in coffee.

  title={Antioxidative activity of a zinc-chelating substance in coffee.},
  author={Xu Wen and Makiko Takenaka and Masatsune Murata and Seiichi Homma},
  journal={Bioscience, biotechnology, and biochemistry},
  volume={68 11},
Coffee brew contains a brownish zinc-chelating polymer designated ApV. ApV was prepared from the precipitate formed in a solution of instant coffee by adding ZnCl(2) and purified using ion-exchange and cellulose column chromatographies. The antioxidative activities of ApV and related compounds were evaluated in this study. The free-radical scavenging activity of ApV estimated by ABTS assay was at a similar level to that of instant coffee, while the O(2)(-) scavenging activity of ApV, which is… CONTINUE READING


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