Trp-P-2 is not detectable in cooked meat and fish

Area of Science:

• Food Chemistry
• Analytical Chemistry
• Toxicology

Background:

• 3-amino-1-methyl-5H-pyrido[4,3-b]indole (Trp-P-2) is a heterocyclic amine found in cooked foods.
• Assessing Trp-P-2 levels is crucial for food safety and understanding potential health risks.

Purpose of the Study:

• To develop and validate a sensitive analytical method for quantifying Trp-P-2 in cooked meat and fish.
• To determine the presence and levels of Trp-P-2 in various commercially prepared food samples.

Main Methods:

• Development of a gas chromatographic-mass spectrometric (GC-MS) assay.
• Utilized capillary column GC with electron capture negative ion chemical ionization MS.
• Employed a deuterated Trp-P-2 analogue as an internal standard for accurate quantification.

Main Results:

• The initial assay achieved a limit of detection of 0.1 ng Trp-P-2/g food.
• Analysis of four meats and three fish types, cooked via frying or broiling, revealed no detectable Trp-P-2.
• An improved assay with a 25 pg Trp-P-2/g detection limit also found no Trp-P-2 in re-tested fried ground beef.

Conclusions:

• The developed GC-MS method is highly sensitive and suitable for Trp-P-2 analysis in cooked foods.
• No Trp-P-2 was detected in the analyzed samples of cooked meat and fish, suggesting low prevalence or absence under tested conditions.
• Further research may explore Trp-P-2 formation under different cooking parameters or in other food matrices.