Abstract：
:The increased emergence of Ciguatera Fish Poisoning in the Canary Islands and Madeira demanded the development of confirmatory methods by liquid chromatography coupled to tandem mass spectrometry to characterize the risk. Efforts were particularly focused on the optimization of sample pretreatment, especially in the sample cleanup step, to efficiently remove matrix interferences as a critical factor to consider in mass spectrometry detection. Two different LC-MS/MS approaches have been used for confirmation purposes, the first one using the sodium adduct as precursor and product ion to allow an increased sensitivity in the detection, whereas additional fragments were also monitored for further confirmation. The optimized conditions above mentioned allowed the confirmation of Caribbean Ciguatoxin-1 as the main responsible for the samples analyzed from these geographical areas, while the presence of a new hydroxyl metabolite of C-CTX1 was also confirmed in one sample analyzed in this study.
journal_name
Food Chemjournal_title
Food chemistryauthors
Estevez P,Castro D,Manuel Leao J,Yasumoto T,Dickey R,Gago-Martinez Adoi
10.1016/j.foodchem.2018.12.038subject
Has Abstractpub_date
2019-05-15 00:00:00pages
8-14eissn
0308-8146issn
1873-7072pii
S0308-8146(18)32142-3journal_volume
280pub_type
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