Which type of packaged food relies on multi-layer materials for aseptic integrity?

Aseptic juice is packaged using multi-layer materials designed specifically to maintain aseptic integrity, which is essential for preserving the product without the need for refrigeration before opening. The packaging typically consists of layers that protect against light, oxygen, and microbial contamination, which helps extend the shelf life of the juice. This allows it to be stored at room temperature until it is opened, making it both convenient and safe for consumption.

In contrast, frozen meals typically rely on freezing techniques for preservation rather than packaging materials designed for aseptic preservation. Snack bars may have packaging for freshness but do not require the same level of aseptic protection. Baked goods, while often packaged to maintain freshness and prevent spoilage, do not depend on multi-layer materials intended for aseptic environments, as they are typically consumed shortly after production.