Development of a New Extraction Method for Heterocyclic Aromatic Amines Determination in Cooked Meatballs

Food Analytical Methods(2013)

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Abstract
Heterocyclic aromatic amines (HCAs) are mutagenic and carcinogenic compounds that are produced in meats cooked at high temperature. In this study, 2-amino-3-methylimidazo[4,5- f ]quinoline (IQ), 2-amino-3,8-dimethylimidazo[4,5- f ]quinoxaline (MeIQx), 2-amino-3,4,8-trimethylimidazo[4,5- f ]quinoxaline (4,8-DiMeIQx), 2-amino-1-methyl-6-phenylimidazo[4,5- b ]pyridine (PhIP), 9 H -pyrido[3,4- b ]indole (norharman), and 1-methyl-9 H -pyrido[3,4- b ]indole (harman) were studied. A new extraction method was developed for the determination of heterocyclic amines with high-performance liquid chromatography (HPLC). Linearity for each HCA was observed with a high regression coefficient ( r = 0.9999, P < 0.01 for IQ; r = 0.9990, P < 0.01 for MeIQx; r = 0.9989, P < 0.01 for 4,8-DiMeIQx; r = 0.9934, P < 0.05 for PhIP; r = 1.000, P < 0.01 for norharman; r = 0.9991, P < 0.01 for harman). Limits of detection for various HCAs were found between 0.04 and 1.40 ng/g. Limits of quantification were found in the range of 0.13–4.40 ng/g. Recovery rates varied from 68.9 % to 87.8 %. This method was compared with two different common HCA extraction methods in literature. The optimized new extraction method and the other two methods were used for the determination of HCAs in ten different cooked meatball samples. Sample extraction procedures of HCAs were investigated in more detail, and a rapid, accurate, precise, and reliable extraction method was developed.
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Key words
Heterocyclic aromatic amines,HPLC,Meatball,Solid-phase extraction
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