title: Identification and migration of degradation compounds from irradiation of multilayer polyamide 6 films for meat foodstuffs and cheese.
abstract: The aim of this work was to identify the degradation compounds produced during irradiation of multilayer polyamide 6 (PA-6) films and to study their migration into water and 95% ethanol food simulant. After irradiation of multilayer PA-6 films at 3, 7 and 12 kGy, degradation compounds were extracted using solid-phase microextraction, for which the time and temperature of extraction and stirring were optimized, and identified by gas chromatography-mass spectrometry. Caprolactam, 2-cyclopentylcyclopentanone and aldehydes, among other compounds, were identified in the headspace of the films. Polydimethylsiloxane was considered the best fiber for extraction. The optimum conditions of time, temperature and stirring to extract the compounds were 20 min, 80 degrees C and 225 rpm. For validation purposes, the compounds were quantified in water and 95% ethanol and the results showed high sensitivity, good precision and accuracy. Migration of compounds from irradiated and non-irradiated multilayer PA-6 films into water and 95% ethanol food simulants was carried out at 40 degrees C for 10 days. The method was efficient for the quantification of decaldehyde, 2-cyclopentylcyclopentanone and caprolactam that migrated from multilayer PA-6 films into food simulants.
authors.affiliation: Department of Food and Nutrition, School of Pharmaceutical Science, São Paulo State University, P.O. Box 502, 14801-902, Araraquara, SP, Brazil.
authors.forename: J S
authors.initials: JS
authors.lastname: Félix
authors.forename: M
authors.initials: M
authors.lastname: Monteiro
authors.forename: J E
authors.initials: JE
authors.lastname: Manzoli
authors.forename: M
authors.initials: M
authors.lastname: Padula
authors.forename: D
authors.initials: D
authors.lastname: Pezo
authors.forename: J
authors.initials: J
authors.lastname: Romero
authors.forename: C
authors.initials: C
authors.lastname: Nerín
mesh_terms: D000447:Aldehydes / Q000032:analysis*; D002209:Caprolactam / Q000031:analogs & derivatives* / Q000032:analysis* / Q000737:chemistry / Q000528:radiation effects; D002611:Cheese; D003517:Cyclopentanes / Q000032:analysis*; D004129:Dimethylpolysiloxanes / Q000737:chemistry; D004307:Dose-Response Relationship, Radiation; D005720:Gamma Rays; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D008460:Meat; D008567:Membranes, Artificial; D015394:Molecular Structure; D011108:Polymers / Q000737:chemistry / Q000528:radiation effects*; D015203:Reproducibility of Results; D052617:Solid Phase Microextraction / Q000379:methods; D013696:Temperature; D013997:Time Factors
chemical_list: D000447:Aldehydes; D003517:Cyclopentanes; D004129:Dimethylpolysiloxanes; D008567:Membranes, Artificial; D011108:Polymers; C009916:nylon 6; C013830:baysilon; D002209:Caprolactam; C497967:2-cyclopentylcyclopentanone