Global migration of non-volatile substances and specific migration of €-caprolactam in polyamide 6 casings with Ag+-Zn++ ions Journal title: Journal of Food Science and Gastronomy Authors: Jairo H. Patiño, Luis E. Henríquez, María I. Lantero Subject(s): Chemistry, Biochemistry, Food Science and Technology, Materials Science, Coatings & Films, Nutrition & Dietetics