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How to Freeze Dry Food

How to Freeze Dry Food

Taking Dried Food to the Next Level

If you’re looking to preserve food for the future, freeze drying is an innovative technique that can help protect perishable items. While many people use traditional freezing to preserve vegetables and meat, freeze drying provides a useful alternative that doesn’t require refrigeration or preservatives.

It can also be a great option if you’re planning on traveling with food or want to avoid using harmful additives. In this article, we’ll do our best to answer the most common questions folks have as far as how to freeze dry food.

What is the Freeze-Drying Process?

With freeze-drying, the process is slightly more complicated than traditionally freezing. Freeze drying uses a unique method called lyophilisation. During this process, the food is brought to a below-freezing temperature, and the water content is then removed using a high-pressure vacuum. The water is extracted in the form of vapor after which it returns to the form of ice on the surface of a condenser.

This process provides a preservation method that doesn’t alter the internal composition of the food. Freeze dried foods need to be rehydrated to return to their normal state for consumption.

Freeze Drying Process

Is There a Difference Between Freeze Dried and Dehydrated?

Yes. Dehydration doesn’t use the same freezing method as freeze drying. For this reason, it removes less moisture. While dehydration typically removes up to 95 percent of a product’s moisture, freeze drying can remove up to 99 percent. Freeze drying’s ability to remove more moisture solidifies it as the best method for preserving food as the less moisture that is present the longer foods will last.

Also, dehydrated foods typically have additives which change the composition of the food. Salts and other preservatives are common choices. As a result, freeze dried foods are better for those looking to avoid additives.

How Long Does It Take to Freeze Dry Food?

Freeze drying isn’t a short process – it can take up to 40 hours in some cases, but on the shorter end of the scale, it can be done in as little as 20 hours. This timeframe will depend on the kind of food and the thickness of the product. The thicker the product you’re trying to freeze dry, the longer the process may take.

Can Freeze Dried Food Go Bad?

Yes. Eventually, all forms of preserved food go bad, but freeze drying your food is one of the most extended forms of preservation. The length of time it takes for a product to spoil will depend on the type of product.

For example, fruit typically spoils after just a couple of years. On the other hand, cottage cheese can last up to 30 years if it’s effectively freeze dried. Many types of meat can also last between 20 and 25 years when properly freeze dried.

The typical range of active preservation time falls between 2 and 30 years depending on the food. Once you open a freeze-dried package, however, you only have a week or two to consume it before it goes bad.

We hope this guide on how to freeze dry food has answered all your questions and helped you better understand the advantages of freeze drying.

 

 

Dure Foods how dried foods are made

Desert or Dessert? How Dried Foods Are Made

Dried Foods 101

If you are familiar with dried fruit, you’ve probably indulged in banana or apple chips on the regular. Dried food is a type of food preservation that removes the water from food to inhibit the growth of bacteria, ultimately preserving it. The thing about dried food is not only is it great for food preservation, but it always makes a delicious snack! When it comes to drying fruits and vegetables, it makes a tastier, nutritious, and lightweight experience. Most dried food is high energy snacks, and is perfect for travel snacks as they are lightweight and easy to store and consume.

For some people, they are a little cautious when it comes to dried food. Some of the questions and concerns are about the process to which they are made, and whether they are good or bad for you. This blog will give both sides to eating dry food, and you can determine what you think! One of the most common questions is how are dried foods made? Below you get the complete break down on what the dried food process consist of:

How are Dried Foods Made?

Depending on the type of food, the drying procedure will defer. You need a nice balance of the optimal temperature and humidity to successfully dry food.

Some of the most common methods are food dehydrators and room drying. Commercially or homemade food dehydrators leave a good dried product. In fact, oven drying works well if the oven is set to 140 to 150 degrees Fahrenheit and opening the oven door at about 2 to 3 inches to allow the moisture to dissipate.

How Are Dried Foods Made?

However, room drying (at room temperature) can only work if the heat and humidity are adequate. In addition, a popular procedure performed when drying food is peeling (if it is fruit or vegetables). Peeling the skin greatly helps the drying process, because the skin reduces the surface area, which prevents the moisture from being able to escape.

What are the Benefits and Concerns for Dried Food?

Some people say dried food is pointless or isn’t good for you because all the nutrients have been taken out. So, is dried food even good for you? Yes- If you choose the dried food wisely.

Choosing dried fruit and vegetables is a no-brainer of a better choice. Actually, dehydration causes some of the nutrients to become more concentrated. However, keep in mind that dried food is only the fraction of its original size. Also, always watch for added sweeteners, as some dried foods have a lot of extra additives in them for flavour. Dried food without any additive is the only way you can truly enjoy all the benefits it has to offer.

Buy Quality Dry Foods Today!

Dure Foods, a powdered food packaging company, brings the nutrients in everything they deliver. Whether its meal supplements, coffee, or amino acids, our products deliver exceptional benefits. Whether you want to learn more about our dried food products, formulate your own proprietary dry mixture, or white label one of our fine products, contact us today!