Which of the following is a common source of chemical migration into food?

Chemical migration into food can occur from various sources, particularly from packaging materials designed for food storage. Each of the provided options represents a potential source of chemicals that can leach into food, raising safety concerns.

Packaging liners often contain substances that could migrate into food, especially when they come into contact with moisture and heat. These liners are used for various types of containers and can be made from various materials that may not be entirely inert.

Packaging containers themselves can also release chemicals, especially if they are made from certain types of plastics or if they undergo degradation over time. Factors such as temperature and the nature of the food stored within can influence how much chemical migration occurs.

Similarly, packaging adhesives can be a source of chemical migration. These adhesives may not be food-safe and can leach harmful substances into the food they are in contact with, particularly in stronger adhesive formulations or under certain environmental conditions, like heat.

Given that all these packaging components can contribute to chemical migration into food, the correct answer highlights the comprehensive nature of the question by recognizing that any of these sources can potentially lead to safety concerns regarding food contamination. This understanding emphasizes the importance of careful material selection and regulation in food packaging to protect consumer health.