Comparison of Acylated Plant Pigments: Light-resistance and Radical-scavenging Ability

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  • NAKAJIMA Nobuyoshi
    <i>Department of Nutritional Science, Okayama Prefectural University</i>
  • SUGIMOTO Manabu
    <i>Research Institute for Bioresources, Okayama University</i>
  • YOKOI Hiroshi
    <i>Department of Applied Science, Okayama University of Science</i>
  • TSUJI Hideaki
    <i>Department of Nutritional Science, Okayama Prefectural University</i>
  • ISHIHARA Kohji
    <i>Department of Chemistry, Kyoto University of Education</i> Present address: <i>Department of Applied Science, Okayama University of Science</i>

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Abstract

  The acylated plant pigments synthesized by lipase-catalyzed transesterification with aromatic acids were compared in respect of their light-resistance and radical-scavenging ability. With both the flavonols and anthocyanins, their acylated derivatives were more stable against illumination with fluorescent light than their non-acylated glucosides. Their radical-scavenging ability partially decreased or was retained by acylation to the glucoside molecules.<br>

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