Decomposition of tetrodotoxin using multi-gas plasma jet

Area of Science:

• Environmental Chemistry
• Plasma Science

Background:

• Tetrodotoxin (TTX) is a potent neurotoxin found in various marine organisms.
• Effective methods for TTX decomposition are crucial for environmental safety and food security.

Purpose of the Study:

• To investigate the efficacy of non-thermal multi-gas plasma in decomposing Tetrodotoxin (TTX).
• To compare the decomposition capabilities of different gas plasmas on TTX.

Main Methods:

• Non-thermal multi-gas plasma treatments were applied to TTX solutions.
• Liquid chromatography coupled with electrospray time-of-flight mass spectrometry (LC-ESI-TOF-MS) was used for TTX analysis.

Main Results:

• Plasma irradiation significantly reduced the TTX mass spectrum signal.
• Nitrogen plasma demonstrated superior TTX decomposition efficiency compared to oxygen, argon, and carbon dioxide plasmas.
• Nitrogen plasma treatment for 10 minutes resulted in a 100-fold decrease in TTX concentration.

Conclusions:

• Non-thermal multi-gas plasma, particularly nitrogen plasma, is a highly effective method for Tetrodotoxin decomposition.
• This study highlights a promising approach for mitigating TTX contamination in environmental and food matrices.