Potential exposure to bisphenol a from food-contact use of epoxy coated cans

Abstract

The potential dietary exposure to bisphenol A (BPA) from the use of food and beverage cans coated with bisphenol A-based epoxies was determined. The calculation was based on migration data from extraction studies using food-simulating solvents and time and temperature conditions recommended by U.S. Food and Drug Administration (FDA). The study demonstrates that no detectable BPA was found in the extracts from beverage cans using a method sensitive to five parts per billion (5 ppb) in the food simulant; the average migration of BPA from food cans was determined to be 37 ppb. Using these data, along with the use patterns for food and beverage cans, the maximum potential dietary exposure to bisphenol A was estimated to be approximately 2.2 ppb. Because the conditions of the migration tests exaggerate actual use conditions, this value overstates the reasonably anticipated actual potential exposure.