麻ひ性貝毒によって著しく毒化したホタテガイにおける貝柱の毒性

概要

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Strikingly noticeable PSP-infested specimens of the scallp Patinopecten yessoensis were examined for anatomical distribution of the toxicity. The unfrozen adductor muscle showed toxicity scores as low as 3-13 MU/g, even when the shellfish was toxified up to unprecedented levels of 6, 500-11, 000 MU/g difestive gland. With the specimens of toxicity levels ranging from 1, 000-2, 900 MU/g digestive gland, the adductor muscle, either washed or non-washed, were nontoxic. The latter scallops showed a toxicity score less than 2 MU/g non-washed adductor muscle, when kept frozen for five months and thawed quickly by heating at 100°C for 5 min, or thawed less quicky by leaving at room temperature (17-21°C) for 4 h. Their toxicity levels were 3-9 MU/g adductor muscle when thawed slowly by leaving at 5°C for 24 h. On the other hand, the toxicity of adductor muscle was raised up to 54 MU/g, when the freezing-thawing of the whole shellfish was repeated three times, indicating the migration of toxin from one tissue to another.
日本水産學會の論文