Analysis of Marine Biotoxins Using LC-MS/MS

Area of Science:

• Marine Biology
• Analytical Chemistry
• Food Safety

Background:

• Algae-related poisoning, including paralytic shellfish poisoning (PSP), diarrhetic shellfish poisoning (DSP), and amnesic shellfish poisoning (ASP), poses significant risks.
• Traditional bioassays for marine biotoxin determination lack sensitivity and specificity.
• LC-MS methods have emerged as superior alternatives to HPLC for seafood control and phytoplankton monitoring.

Purpose of the Study:

• To describe state-of-the-art LC-MS/MS methods for detecting and quantifying phycotoxins in shellfish.
• To highlight the application of hydrophilic interaction liquid chromatography (HILIC) for PSP toxin separation.
• To provide a comprehensive overview of current analytical techniques for various marine biotoxin classes.

Main Methods:

• Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) for sensitive and specific toxin analysis.
• Hydrophilic Interaction Liquid Chromatography (HILIC) for the separation of highly hydrophilic PSP toxins.
• Analysis of diverse phycotoxin classes including PSP, DSP (okadaic acid, DTXs, PTXs, YTXs), azaspiracid shellfish poisoning (AZP), and ASP (domoic acid).

Main Results:

• LC-MS/MS methods provide effective seafood control and phytoplankton monitoring for marine biotoxins.
• HILIC chromatography demonstrates utility in separating PSP toxins.
• The described methods cover a broad range of regulated shellfish toxins, addressing limitations of traditional bioassays.

Conclusions:

• Advanced LC-MS/MS techniques are essential for accurate and sensitive detection of multiple phycotoxin classes in shellfish.
• These methods enhance seafood safety and support effective monitoring of harmful algal blooms.
• The integration of HILIC with LC-MS/MS offers a powerful approach for analyzing challenging hydrophilic toxins.