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- W2022982690 abstract "Paralytic shellfish poisoning (PSP) toxins are highly toxic natural compounds produced by dinoflagellates commonly present in marine phytoplankton. Shellfish contaminated with these toxins create significant public health threat and economic losses to the shellfish industry. For this reason, several methods of high performance liquid chromatography (HPLC) with fluorescence detection have been developed in order to gain better knowledge of toxins profiles in shellfish and dinoflagellates samples. These methods have been subjected to continuous modifications to improve and shorten the run time of analysis in the routine monitoring control. In this paper, different samples are analyzed by pre- and post- column HPLC methods to compare toxin profiles. All PSP toxins were individually identified and quantified within the post-column oxidation method. However, although the pre-column oxidation method is significantly more sensitive and detects lower toxin levels, it provides a total amount of toxins that co-elute together, as GTX2 and 3, GTX1 and 4 and dcGTX2 and dcGTX3. The results obtained by both HPLC methods showed similar toxin concentration (expressed in mug/mL) in mussel samples, however when dinoflagellates samples were analyzed the toxin profile and concentration were different. In summary, the post-column oxidation method is accurate to determine the amount of each individual PSP toxin and to know the real toxic profile of non-transformed samples. In addition, this method is easy and faster to screen a large number of samples. The pre-column HPLC method is useful when mussel samples are analyzed even though the time required to prepare the samples is longer." @default.
- W2022982690 created "2016-06-24" @default.
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- W2022982690 date "2010-09-01" @default.
- W2022982690 modified "2023-10-10" @default.
- W2022982690 title "Comparative analysis of pre- and post-column oxidation methods for detection of paralytic shellfish toxins" @default.
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- W2022982690 doi "https://doi.org/10.1016/j.toxicon.2010.04.014" @default.
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