Migration of bisphenol A into canned tomatoes produced in Italy: dependence on temperature and storage conditions

Food Chem. 2014 Oct 1:160:157-64. doi: 10.1016/j.foodchem.2014.03.085. Epub 2014 Mar 24.

Abstract

A method based on solid-phase extraction followed by liquid chromatography, coupled to UV-visible and fluorescence spectrophotometry, has been developed for determination of bisphenol A (BPA) in canned tomatoes. The limit of quantification (LOQ) of the procedure used is 0.03 μM (0.26 μg BPA/kg tomato). For each of three different tomato based products (peeled, cherry and concentrated paste), 16 samples belonging to six commercial brands, retailed in Italian markets, were tested for migration of BPA epoxy-coating cans. All the tomato samples exhibited migration levels below 0.4 μg/kg, while samples subjected to heating process and/or can's damage by denting, exhibited a significant increase in the migration levels. In any case, no sample contained BPA exceeding the European Union limit for migration, set at 600 μg/kg of food. By comparing the results for each brand, no relevant difference in BPA concentration was found depending on the kind of tomato products.

Keywords: Bisphenol A; Canned tomatoes; HPLC; Migration; Solid-phase extraction.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Benzhydryl Compounds / analysis*
  • Chromatography, High Pressure Liquid / methods
  • Chromatography, Liquid
  • European Union
  • Food Contamination / analysis
  • Food Preservation / methods*
  • Food, Preserved / analysis*
  • Italy
  • Maximum Allowable Concentration
  • Phenols / analysis*
  • Solanum lycopersicum / chemistry*
  • Solid Phase Extraction / methods
  • Temperature

Substances

  • Benzhydryl Compounds
  • Phenols
  • bisphenol A