Does Food Flavor Change When Stored for 25 Years in Mylar?

Food Storage Myths and Facts

Mylar, a type of polyester film, is often used for food storage due to its excellent barrier properties. When sealed in a Mylar bag or bucket, food is protected from light, oxygen, and moisture, which are major contributors to flavor degradation and food spoilage. This is especially true for dry goods like grains, nuts, and seeds, which can remain nutritious and flavorful for decades when stored properly.

The Role of Packaging in Food Preservation

The key to maintaining food flavor is to prevent the entry of external factors that cause degradation. Mylar’s impermeability to gases, light, and moisture creates an environment that is similar to a vacuum, essentially preserving the food’s original state. This is why Mylar is often used for storing food for extended periods, including emergency food supplies and long-term storage of grains and other commodities.

Practical Considerations for Long-Term Storage

To ensure the best possible results, it’s essential to follow proper storage techniques. Food should be packaged in airtight Mylar bags or buckets, and these containers should be stored in a cool, dry place. The ideal storage temperature for dry goods is between 50°F and 70°F (10°C and 21°C), with a relative humidity of 30-50%. By following these guidelines, you can enjoy your stored food for many years without significant flavor changes.