EFFECT of GAMMA IRRADIATION on CAPROLACTAM MIGRATION FROM MULTILAYER POLYAMIDE 6 FILMS INTO WATER FOOD SIMULANT and VALIDATION of THE METHOD
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A gas chromatographic method to determine caprolactam migration from non-irradiated and irradiated multilayer polyamide 6 films into water food simulant was developed and validated. Linear range was 0.96 to 642.82 mu g/mL, with correlation coefficient of 0.9999. Limit of detection and quantification was 0.32 and 0.96 mu g/mL, respectively. Method precision showed RSD values lower than 2.1%, while method accuracy showed recovery from 89 to 105%. Caprolactam levels reduced with the increase of radiation dose for films used for meat foodstuffs, while for films used as cheese packaging only slight differences occurred.