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| Dixon, D; Rodrick, G. |
| Total bacterial numbers were reduced three to four log cycles upon exposure of shell stock oysters to ionising radiation (60Co) at 1.0, 2.0 and 5.0 kiloGrays.Vibrio vulnificus was detected in the non-irradiated control shell stock oysters, however, it was not detected in any of the shell stock after 1.0, 2.0 and 5.0 kiloGrays of exposure. The shelflife of irradiated shell stock oysters and depurated oysters was also compared. Fifty percent of the irradiated oysters were dead within 12, 10 and 7 days at 1.0, 2.0 and 5.0 kiloGrays of exposure, respectively. In contrast, fifty percent of the depurated oysters were dead after 31 days. Cultures of virulent and avirulent Vibrio vulnificus in phosphate buffered saline were quite radiosensitive as no colony... |
| Tipo: Text |
Palavras-chave: ASW; USA; Florida USA Coasts Vibrio vulnificus Crassostrea virginica Bivalvia Bacteria Marine molluscs Food technology Ionizing radiation Self purification Shellfish Oyster culture. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1620.pdf |
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| Schneider, K; Rodrick, G. |
| Gymnodinium breve toxins were exposed to ozone treatment in both extracted form and in intact whole cells. Samples displayed a three log reduction in the total amount for toxin (PbTx-1, -2, -3, -5, -7 and -9) recovered after ten minutes as determined by HPLC analysis. Ozone effectively killed the red tide dinoflagellates when directly contacted ozone and when exposed in a pre-ozonated ASW environment. Both samples, when examined by light microscopy, displayed little difference between the direct and indirect ozone treatments. Reduction in toxin levels directly correlated with reduction of toxicity as observed using by a fish (prinodon variegatus) bioassay. |
| Tipo: Text |
Palavras-chave: ASW; USA; Florida USA Coasts Cyprinodon variegatus Pisces Self purification Bioassays Ozonation. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1621.pdf |
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