HPLC-MS-Method for A-Trichothecenes.

Area of Science:

• Food Chemistry
• Analytical Chemistry
• Mycology

Background:

• Gas chromatography with electron capture detection is a key method for analyzing A-trichothecenes (T-2 toxin, HT-2 toxin, diacetoxyscirpenol).
• A significant drawback of this method is the necessity for prior derivatization of these mycotoxins.
• Developing alternative sensitive methods for mycotoxin analysis in grain is crucial for food safety.

Purpose of the Study:

• To describe a sensitive high-performance liquid chromatography (HPLC) method for analyzing A-trichothecenes in grain.
• To establish detection and quantification limits for T-2 toxin, HT-2 toxin, and diacetoxyscirpenol using the developed HPLC method.
• To evaluate the efficiency of multifunctional columns for sample cleanup in mycotoxin analysis.

Main Methods:

• High-performance liquid chromatography (HPLC) was employed for the sensitive analysis of A-trichothecenes.
• Sample cleanup was performed using multifunctional columns (MycoSep™).
• Electron capture detection was utilized for sensitive mycotoxin quantification.

Main Results:

• The HPLC method achieved detection limits of 3.5 μg/kg for T-2 toxin, 6.1 μg/kg for HT-2 toxin, and 4.1 μg/kg for diacetoxyscirpenol.
• Limits of quantification were determined as 12.7 μg/kg (T-2), 21.9 μg/kg (HT-2), and 14.8 μg/kg (DAS).
• Recovery rates for all analyzed compounds were approximately 100%, indicating high method efficiency.

Conclusions:

• A sensitive HPLC method has been successfully developed for the analysis of A-trichothecenes in grain.
• The developed method eliminates the need for derivatization, overcoming a major limitation of gas chromatography.
• The use of multifunctional columns facilitates efficient sample cleanup, contributing to the method's sensitivity and reliability.