低温貯蔵中のヨウサイに発生する褐変現象と酸化還元バランスとの関係

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タイトル別名
  • Relationship between Browning and Redox System of Water Convolvulus (<I>Ipomoea aquatica</I> FORSK.) Stored at Low Temperature
  • テイオン チョゾウ チュウ ノ ヨウサイ ニ ハッセイ スル カッペン ゲンショウ ト サンカ カンゲン バランス ト ノ カンケイ

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抄録

The TBA value, an index to the degree of lipid peroxidation, and hydrogen peroxide contents of water convolvulus increased prior to the onset of chilling injury and decreased when severe symptoms appeared. The NAD+/NADH ratio was higher at VC than at 20°C during storage. The NADP+/NADPH ratio decreased in both storage conditions. Energy charge at 20°C storage was kept at high level state, but it decreased simultaneously with the appearance of chilling injury at 1°C. Polyphenoloxidase (PPO), ascorbate (AsA) peroxidase and catalase activities also increased before the onset of chilling injury. The results of the present study suggest that under low NAD+/NADH ratio, lipid peroxide, hydrogen peroxide relate to the development of chilling injury in water convolvulus.

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