Simple methods for quantifying mutagenic heterocyclic aromatic amines in food products

Area of Science:

• Analytical Chemistry
• Food Science
• Toxicology

Background:

• Mutagenic heterocyclic aromatic amines (HAAs) are formed during the heating of meat products.
• Accurate determination of HAAs is crucial for food safety and risk assessment.
• Existing methods may lack efficiency or sensitivity for complex food matrices.

Purpose of the Study:

• To develop and validate two novel solid-phase extraction (SPE) methods for HAA determination.
• To enable simultaneous quantification of multiple HAAs in heated meat products.
• To assess the efficiency and applicability of the developed SPE methods.

Main Methods:

• Development of two tandem SPE methods: copper phthalocyanine (CPC) and propylsulfonyl silica gel (PRS).
• Utilized coupled cartridges of diatomaceous earth with derivatized Sephasorb HP (CPC) or PRS.
• Quantification of HAAs by High-Performance Liquid Chromatography (HPLC) with UV detection.

Main Results:

• Both CPC and PRS methods achieved low parts per billion (p.p.b.) detection limits for various HAAs.
• The CPC method allowed simultaneous quantification of 10 HAAs, while the PRS method quantified 6 HAAs and 2 glutamic acid pyrolysates.
• 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx) and 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) were major contaminants found in meat extracts and fried meat, respectively.

Conclusions:

• The developed SPE methods provide efficient and sensitive tools for HAA analysis in heated meat.
• These methods facilitate accurate risk assessment of mutagenic compounds in food.
• The findings highlight the prevalence of specific HAAs in different types of cooked meat products.