When packaging freeze-dried products, it is important to use materials that will protect the product from moisture, oxygen, light, and contaminants. The following materials are commonly used to package freeze-dried products:
Mylar bags:
Mylar bags are often the first choice for freeze-dried products due to their excellent moisture and oxygen barrier properties. They can be heat-sealed and are often combined with oxygen absorbers to extend shelf life. These bags are durable and light-resistant, making them ideal for long-term storage.
Vacuum-sealed bags:
Vacuum-sealed bags are another common choice because they remove air from the package, which helps preserve the texture and quality of the freeze-dried product. These bags are often made from multiple layers of plastic film that have good barrier properties.
Sealed glass jars:
For small quantities of product, sealed glass jars are a suitable choice. Glass is a good barrier to moisture and oxygen and can be reused. They are ideal for short- to medium-term storage in a controlled environment.
Aluminum foil laminated bags:
These bags are a good barrier to light, moisture, and oxygen. They are often used for long-term storage because they provide a strong barrier and are durable.
Plastic containers with tight-fitting lids:
Tightly sealed plastic containers can be used for freeze-dried products, especially for shorter storage periods. However, these containers may not be as effective as Mylar or aluminum foil bags for long-term storage because they allow some moisture and oxygen penetration over time.
Multilayer films:
Multilayer films combine various plastic materials with aluminum foil or other barrier materials to provide enhanced protection. They are flexible, cost-effective, and provide a good barrier against moisture and oxygen.
Oxygen absorbers and desiccants:
Regardless of the packaging material, adding oxygen absorbers and desiccants inside the package can further protect freeze-dried products by reducing oxygen and moisture levels.
