PMID- 28974018 OWN - NLM STAT- MEDLINE DCOM- 20180606 LR - 20181113 IS - 2072-6651 (Electronic) IS - 2072-6651 (Linking) VI - 9 IP - 10 DP - 2017 Sep 30 TI - Profiling of Extracellular Toxins Associated with Diarrhetic Shellfish Poison in Prorocentrum lima Culture Medium by High-Performance Liquid Chromatography Coupled with Mass Spectrometry. LID - 10.3390/toxins9100308 [doi] LID - 308 AB - Extracellular toxins released by marine toxigenic algae into the marine environment have attracted increasing attention in recent years. In this study, profiling, characterization and quantification of extracellular toxin compounds associated with diarrhetic shellfish poison (DSP) in the culture medium of toxin-producing dinoflagellates were performed using high-performance liquid chromatography-high-resolution mass spectrometry/tandem mass spectrometry for the first time. Results showed that solid-phase extraction can effectively enrich and clean the DSP compounds in the culture medium of Prorocentrum lima (P. lima), and the proposed method achieved satisfactory recoveries (94.80%-100.58%) and repeatability (relative standard deviation