This document discusses aseptic packaging, which involves packaging sterile products in sterile containers within a sterile environment. It is used for foods like dairy, fruits, vegetables, and soups to allow storage without refrigeration for over 6 months. The document categorizes different aseptic packaging methods and outlines the sterilization processes used to maintain sterility during filling. These include irradiation, heat treatment, and chemical treatments. It notes the benefits of aseptic packaging are extended shelf life without refrigeration or preservatives, but high production costs and maintaining air sterility can be challenges.