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how long does dehydrated food last in mylar bags


Dehydrated Food in Mylar Bags: An In-depth Guide to its Longevity and Storage


Dehydrated food has gained immense popularity in recent years due to its convenient storage, lightweight nature, and long shelf life. When it comes to preserving dehydrated food, Mylar bags have become the go-to choice for many enthusiasts. In this comprehensive guide, we will explore the longevity of dehydrated food in Mylar bags, the factors affecting its shelf life, and best practices for storing it effectively.

Understanding Dehydration and its Benefits

Dehydration is a process that removes moisture from food, significantly reducing its water content. By doing so, the growth of bacteria, mold, and other microorganisms is hindered, leading to extended shelf life. Dehydrated food also retains its nutritional value and flavor, making it an excellent alternative to fresh produce.

Mylar Bags - the Ideal Choice for Storage

To ensure the longevity of dehydrated food, proper storage is essential. Mylar bags, made of a polyester film, have become increasingly popular for preserving dehydrated food due to their exceptional barrier properties. These bags provide an oxygen- and moisture-free environment, protecting the food from spoilage and keeping it fresh for an extended period.

Factors Affecting Shelf Life

While dehydrated food stored in Mylar bags can have a significantly extended shelf life compared to other methods, various factors can influence its longevity.

a) Quality of Dehydration:

The more thorough the dehydration process, the longer the shelf life of dehydrated food. Properly dehydrated food with low moisture content ensures minimal chance of bacterial growth, maintaining the food's quality for an extended period.

b) Storage Temperature:

Temperature plays a crucial role in determining the shelf life of dehydrated food. It is essential to store Mylar bags in a cool, dry area to prevent heat and humidity from accelerating the degradation process. Ideally, the storage temperature should be around 60°F (15°C) or lower.

c) Exposure to Light:

Exposing dehydrated food to light, whether natural or artificial, can degrade its quality and shorten its shelf life. Mylar bags, with their opaque nature, provide excellent protection against harmful light rays, preserving the food's integrity.

d) Moisture and Oxygen Absorption:

Even with the best quality Mylar bags, moisture and oxygen absorption can occur over time, reducing the shelf life of the dehydrated food. It is crucial to include oxygen absorbers and desiccant packs inside the Mylar bags to enhance their effectiveness and prolong the food's freshness.

Proper Storage Practices

To maximize the longevity of dehydrated food stored in Mylar bags, the following practices should be considered:

a) Ensure Quality Packaging:

Carefully seal the Mylar bags, squeezing as much air out as possible, before sealing them with a heat sealer. Ensure there are no leaks or gaps that may allow moisture or oxygen to enter.

b) Label and Date the Bags:

To track the shelf life and easily identify the contents, label each Mylar bag with the food type and date of packaging. This practice will help rotate the stock effectively, ensuring older supplies are used before newer ones.

c) Store in a Suitable Location:

Choose a cool, dark, and dry area for storing the Mylar bags. Basements, cellars, or pantries can provide a suitable environment for long-term storage. Avoid areas prone to high humidity or temperature fluctuations, such as attics or garages.

d) Regularly Inspect and Rotate Stock:

Periodically check the stored dehydrated food for any signs of spoilage, such as discoloration, strong odors, or mold. Rotate the stock by using older supplies first to maintain a fresh and varied food supply.

Shelf Life of Dehydrated Food in Mylar Bags

The shelf life of dehydrated food stored in Mylar bags can vary depending on the factors mentioned above. On average, when adequately stored, dehydrated fruits and vegetables can last anywhere from 8 months to 1 year, while dehydrated meats, grains, and legumes can last up to 2-3 years or even longer.


Dehydrated food stored in Mylar bags offers an excellent and convenient way to have a long-lasting food supply. By understanding the factors that affect shelf life and following proper storage practices, you can maintain high-quality dehydrated food for an extended period. With the right techniques and a well-maintained storage environment, you can be well-prepared for emergencies, outdoor adventures, or simply enjoying the convenience of preserved food.


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