2. Academic Validation
  3. Application of chromatographic analysis for detecting components from polymeric can coatings and further determination in beverage samples

Application of chromatographic analysis for detecting components from polymeric can coatings and further determination in beverage samples

  • J Chromatogr A. 2021 Feb 8:1638:461886. doi: 10.1016/j.chroma.2021.461886.
Antía Lestido-Cardama 1,  Patricia Vázquez Loureiro 2,  Raquel Sendón 3,  Perfecto Paseiro Losada 4,  Ana Rodríguez Bernaldo de Quirós 5
Affiliations

Affiliations

  • 1 Department of Analytical Chemistry, Nutrition and Food Science. Faculty of Pharmacy, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain.. Electronic address: antia.lestido@usc.es.
  • 2 Department of Analytical Chemistry, Nutrition and Food Science. Faculty of Pharmacy, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain.. Electronic address: patriciavazquez.loureiro@usc.es.
  • 3 Department of Analytical Chemistry, Nutrition and Food Science. Faculty of Pharmacy, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain.. Electronic address: raquel.sendon@usc.es.
  • 4 Department of Analytical Chemistry, Nutrition and Food Science. Faculty of Pharmacy, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain.. Electronic address: perfecto.paseiro@usc.es.
  • 5 Department of Analytical Chemistry, Nutrition and Food Science. Faculty of Pharmacy, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain.. Electronic address: ana.rodriguez.bernaldo@usc.e.
PMID: 33465586 DOI: 10.1016/j.chroma.2021.461886
Abstract

Major type of internal can coating used for food and beverages is made from epoxy resins, which contain among their components bisphenol A (BPA) or bisphenol A diglycidyl ether (BADGE). These components can be released and contaminate the food or beverage. There is no specific European legislation for coatings, but there is legislation on specific substances setting migration limits. Many investigations have paid attention to BPA due to its classification as endocrine disruptor, however, few studies are available concerning to other bisphenol analogues that have been used in the manufacture of these resins. To evaluate the presence of this family of compounds, ten cans of beverages were taken as study samples. Firstly, the type of coating was verified using an attenuated total reflectance-FTIR spectrometer to check the type of coating presents in most of the samples examined. A screening method was also performed to investigate potential volatiles from polymeric can coatings of beverages using Purge and Trap (P&T) technique coupled to gas chromatography with mass spectrometry detection (GC-MS). Moreover, a selective analytical method based on high performance liquid chromatography with fluorescence detection (HPLC-FLD) for the simultaneous identification and quantification of thirteen compounds including bisphenol analogues (BPA, BPB, BPC, BPE, BPF, BPG) and BADGEs (BADGE, BADGE.H2O, BADGE.2H2O, BADGE.HCl, BADGE.2HCl, BADGE.H2O.HCl, cyclo-di-BADGE) in the polymeric can coatings and in the beverage samples was applied. In addition, a liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) method was optimized for confirmation purposes. The method showed an adequate linearity (R2 >0.9994) and low detection levels down to 5 µg/L. Cyclo-di-BADGE was detected in all extracts of polymeric coatings. The concentrations ranged from 0.004 to 0.60 mg/dm2. No detectable amounts of bisphenol related compounds were found in any of the beverage samples at levels that may pose a risk to human health, suggesting a low intake of bisphenols from beverages.

Keywords

Beverage; Exposure; GC-MS; HPLC-FLD; Purge and Trap; Screening.

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