The advent of sophisticated packaging materials and methods had stimulated the development of complex delivery systems from producer to consumer, resulting in the availability of a wide range of products at an affordable price. Contemporary distribution methods are not without problems however, and specifically related to packaging is the possibility of migration--the contamination of food by components of the materials in contact with it. In this area, both technology and regulations are well developed, but basic science, for a variety of reasons, has tended to advance less quickly. This...