The effects of ionizing radiation, high energy electron beams, an depuration on shell stock oyster shelflife and Vibrio vulnificus content

Other titles Effets de l'irradiation ionisante, des faisceaux d'électrons à haute puissance, et de la purification sur la durée de conservation des huîtres et sur la teneur en Vibrio vulnificus
Type Proceedings paper
Date 1992-04
Language English
Author(s) Dixon D, Rodrick G
Meeting 2. Conference Internationale sur la Purification des Coquillages, Rennes (France), 6-8 Apr 1992
Source Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1995
Keyword(s) ASW, USA, Florida, USA Coasts, Vibrio vulnificus, Crassostrea virginica, Bivalvia, Bacteria, Marine molluscs, Food technology, Ionizing radiation, Self purification, Shellfish, Oyster culture
Abstract 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 forming units could be detected after 0.5 kilogray exposure.
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Dixon D, Rodrick G (1992). The effects of ionizing radiation, high energy electron beams, an depuration on shell stock oyster shelflife and Vibrio vulnificus content. Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1995. https://archimer.ifremer.fr/doc/00000/1620/