The use of ozone to degrade Gymnodinium breve toxins

Other titles Utilisation de l'ozone pour dégrader les toxines de Gymnodinium breve
Type Proceedings paper
Date 1992-04
Language English
Author(s) Schneider K, 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, Cyprinodon variegatus, Pisces, Self purification, Bioassays, Ozonation
Abstract 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.
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