How Dehydrators Affect Foods Nutrition

How Dehydrators Affect Food Nutrients

Have you noticed how light and crunchy our nuts are? It’s because we use the BEST kind of dehydrator!

Our heat pump dehydration method produces a higher quality food that isn’t exposed to the same potential pollution as electric coil dehydrators.

Most dehydrators, both commercial and residential, work by heating ambient air over an electrical coil and blasting it over the ingredients. There are several health and environmental problems with this type of equipment which people should be aware of.

Food Quality

There are many studies that have investigated the quality of dehydrated food, in terms of nutritional quality and taste, and have found that food dehydrated via heat pump is of greater quality than food dehydrated via electric coil (ref). My suspicion is that this is largely to do with the sheer amount of air used by electric coils which is in effect accelerating the causes of food becoming stale.


Coil-driven dehydrators heat, pulls in and discards thousands of litres of ambient air per minute. The World Health Organisation defines ambient air pollution as potentially harmful pollutants emitted by industries, households, cars, and trucks. Given that many nuts need 24 or more hours to dehydrate, the user is essentially exposing your food to the most amount of pollution possible. This is even more of a concern if the company, as most are, is located in an industrial area where ambient air can have higher levels of pollution. Fortunately the heat-pump derived technology that we use, recycles the same air in a closed-loop, simply picking up moisture (evaporating) and dumping it (condensing) over the hot and cold components within a heat pump.

Energy Intensive

Electric coil dehydrators use the most amount of energy needed to heat air. Which is poor form in this carbon-sensitive world we live in. The heat pump technology we use at Mindful Foods is based on the same technology that drives a refrigerator and is between 300% and 400% more energy efficient than electric coil dehydrators.

So now that you’re aware of the differences between dehydrating methods we recommend asking how your nuts are dried at your local grocer. It may start a discussion that ends with you and the environment getting a tasty boost to health and happiness.