The Stabilizing Effect of Various Phosphates against Oxidation of Ascorbic Acid and Sodium Ascorbate Solutions under Coexistence of Copper Ion

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  • FUKUDA Teruo
    Department of Hygienic Chemistry, Showa College of Pharmaceutical Sciences
  • MIYAJIMA Miyoko
    Department of Hygienic Chemistry, Showa College of Pharmaceutical Sciences
  • MIYAGI Tomoko
    Department of Hygienic Chemistry, Showa College of Pharmaceutical Sciences

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Other Title
  • 銅イオンによるアスコルビン酸およびアスコルビン酸ナトリウムの酸化に及ぼすりん酸塩の安定化作用
  • 銅イオンによるアスコルビン酸およびアスコルビン酸ナトリウムの酸化に及ぼすリン酸塩の安定化作用
  • ドウ イオン ニ ヨル アスコルビンサン オヨビ アスコルビンサン ナトリウム ノ サンカ ニ オヨボス リンサンエン ノ アンテイカ サヨウ

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Description

The effect of various phosphates to oxidation of ascorbic acid and sodium ascorbate (1mM) solutions containing 32μg%Cu^<2+>, was investigated. Sodium metaphosphate and sodium hexametaphosphate were shown to have excellent stabilizing ability, against oxidation of ascorbic acid, while pyrophosphate and tripolyphosphate had no stabilizing effect. The stabilizing effect of either metaphosphate or hexametaphosphate to ascorbic acid was fairly reduced by coexistence of pyro- or tripoly-phosphate, except in acid solution.

Journal

  • VITAMINS

    VITAMINS 42 (5), 288-293, 1970

    THE VITAMIN SOCIETY OF JAPAN

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