Effects of Temperature and pH on Degradation of Paralytic Shellfish Poison.

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  • 麻ひ性貝毒の分解速度に及ぼす温度とｐＨの影響
  • マヒセイ カイドク ノ ブンカイ ソクド ニ オヨボス オンド ト pH ノ エイキョウ

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This study was undertaken to determine the effects of temperature and pH on the degradation of gonyautoxin (GTX) 1-4 in both canned oyster infested with paralytic shellfish poison (PSP) and a model GTX 1-4 solution. The degradation of GTX 1-4 in the model solution obeyed good first order kinetics over the entire range of temperature (80-120°C) and pH (6.0-8.0) used in the experiment. The degradation rate of GTX 1-4 increased with the rise of temperature and pH with the correlation coefficient ranging from 0.87 to 0.98. These results obtained with GTX 1-4 in the model solution were almost the same as those with GTX 1-4 in heated-canned oyster infested with PSP. Thus, the amount of GTX 1-4 remaining in canned oyster after heat treatment can be estimated by prediction equations derived in this study.

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