FOOD TECHNOLOGY

Detailed explanation-1: -Migration is the transfer of chemical compounds from or to the packaging film that occurs upon contact with the food. We have considered mostly the transfer of chemical substances from packaging to food.

Detailed explanation-2: -Non-inert materials, like paper and board or plastics, can be a direct source of migrants. Chemicals may also migrate from the outside through the packaging. An exampleare printing inks that have been shown to migrate through paper board into dry foods.

Detailed explanation-3: -Chemical components of packaging materials may migrate in to foods when they contact with them. This type of transfer is called as chemical migration, which is a mass transfer operation. Diffusion the macroscopic movement of molecules from high to low concentration is the main mechanism in migration.

Detailed explanation-4: -Glass packaging is a combination of different materials: a glass container (made of silica glass) and a closure (made of glass, metal, cork, or plastic). The closure material depends on the type of foodstuff.