キサンテン系色素の光力学的作用と光増感酸化反応との関連性について

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  • On the Relation between Photodynamic Activities and Photochemical Oxidation in Xanthene Dyes
  • キサンテンケイ シキソ ノ コウリョクガクテキ サヨウ ト ヒカリゾウカン サンカ ハンノウ ト ノ カンレン ニ ツイテ

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Xanthene dyes such as erythrosine, eosine, phloxine, rose bengale when exposed to visible light have lethal effects on bacteria at concentrations at which the bacteria can still duplicate in the absence of light.<BR>Y. Kurayuki et al. have reported on the formation of resorcinol, phthalic acid and other decomposed products in the fading solution of xanthene dye exposed to daylight. But in our experiments the lethal activities of those decomposed products on bacteria were negligible. And as the photodynamic activities in xanthene dyes as well as methylene blue and proflavine can be found only in aerobic condition, the photodynamic effects on bacteria presumably are due to the oxidation of some component of bacterial cell. This mechanism is simillar to that of photochemical oxidation reported by G. Oster et al.

収録刊行物

  • 食品衛生学雑誌

    食品衛生学雑誌 11 (4), 238-241, 1970

    公益社団法人 日本食品衛生学会

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