title: Development of a multimethod for the determination of photoinitiators in beverage packaging.
abstract: Photoinitiators are ink components used in the printing of food packaging. The aim of the present study was to develop a multimethod for the analysis of photoinitiators in paperboard packages and commercial beverage packages. The proposed method is simple and fairly rapid. Extraction is carried out with acetonitrile. A reverse-phase high performance liquid chromatography (HPLC) method with UV detection was developed to quantify the 6 selected photoionitiators. Total HPLC time analysis was 30 min and the flow-rate was 1 mL/min. Method validation parameters such as linearity and detection limit are reported. Recovery of all photoinitiators (at 1 mg/kg) from orange juice was satisfactory (mean = 88.4%; ranging from 84.6% to 93.4%). Recovery of benzophenone and Irgacure 651 was good (ranging from 85.2% to 98.1% and 86.1% to 92.2%, respectively) at the 4 concentrations studied (0.1, 0.2, 0.5, and 1 mg/kg). Commercial beverage packages were analyzed and when photoinitiators were detected, the beverages were also analyzed.
authors.affiliation: Dept. of Analytical Chemistry, Nutrition and Food Science, Faculty of Pharmacy, Univ. of Santiago de Compostela, E-15782, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Sanches-Silva
authors.forename: S
authors.initials: S
authors.lastname: Pastorelli
authors.forename: J M
authors.initials: JM
authors.lastname: Cruz
authors.forename: C
authors.initials: C
authors.lastname: Simoneau
authors.forename: P
authors.initials: P
authors.lastname: Paseiro-Losada
mesh_terms: D001628:Beverages / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid; D004305:Dose-Response Relationship, Drug; D005506:Food Contamination / Q000032:analysis*; D018857:Food Packaging / Q000295:instrumentation; D007281:Ink; D010209:Paper; D010777:Photochemistry; D014466:Ultraviolet Rays