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Bisphenol A in canned foods in New Zealand: An exposure assessment

Exposure to bisphenol A (BPA) from the consumption of canned and bottled food has been determined for New Zealand adults. Eighty different canned foods purchased from retail outlets in Christchurch, New Zealand, between November 2003 and February 2004 were analysed for BPA concentration by gas chromatography/mass spectrometry. BPA was detected in all foods analysed except for soft drinks. Concentrations ranged from <10 to 29 µg kg−1, except for individual samples of tuna, corned beef and coconut cream, which were 109, 98 and 191 µg kg−1, respectively. The limit of quantitation was <10 µg kg−1 for foods of low fat content (<1%) and <20 µg kg−1 for foods containing >1% fat. Mean concentration data were combined with 24-h dietary recall information for 4399 individual consumers. Mean and maximum exposures were 0.008 and 0.29 µg kg−1 bw day−1, respectively, well below the temporary tolerable daily intake of 10 µg kg−1 bw day−1 given by the European Commission in 2002. The results of the present survey suggest that the levels of BPA identified in canned foods are unlikely to be of concern to adult health, and there is no reason for consumers to change their consumption patterns as a result of these findings. When the concentration data found in the current survey are applied to an oestrogenicity model for an adult male, the contribution of BPA to the total oestrogenicity from 16 food components is 7%. The impact of this level of oestrogenicity remains unclear.