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Determination of the diglycidyl ether of bisphenol A and its derivatives in canned foods

Biles, J.E., White, K.D., McNeal, T.P., Begley, T.H.
Journal of agricultural and food chemistry 1999 v.47 no.5 pp. 1965-1969
cans, surfaces, canned fish, soft drinks, infant formulas, ethers, polymers, stabilizers, food contamination, infrared spectroscopy, hydrolysis, chemical reactions, extraction, gas chromatography, liquid chromatography, mass spectrometry, high performance liquid chromatography, food contact surfaces
Migration of the diglycidyl ether of bisphenol A (DGEBA) to food from can enamels and can pull-top seals is reported. Derivatives of DGEBA are also determined in some foods. Levels of DGEBA in the foods surveyed in this study range from nondetected (< 0.3 ppb) to 50 mg/kg as determined by liquid-liquid extraction or solid-phase extraction coupled with high-pressure liquid chromatography using fluorescence detection. Confirmation of the analytes is by gas and/or liquid chromatography with mass spectral analysis. Fourier transform infrared spectroscopy with 30 degrees specular reflectance/transmittance is used to characterize the coated food contact surfaces. Stability studies with DGEBA in water, acid, and saline solutions show conversion to the hydrolysis products and chloro adducts occurs readily. The presence of DGEBA derivatives in food demonstrate that analysis for DGEBA migration alone is not a good indicator of total migration from can coatings to foods.